MANUAL NO. 29504E3.6 Published in Feb.1997 Revised in Apr.2008

VM-5 SERIES MONITOR MODEL VM-5U DUAL SEISMIC MONITOR INSTRUCTION MANUAL

FOREWORD

VM-5U

For safe operation..... Thank you for using our VM-5 Series Monitor. SHINKAWA Sensor Technology applies strict quality control and inspections to ensure the high reliability of its products. This instruction manual contains descriptive information, specifications, and operating, setting, and adjusting procedures. Please study the contents of this manual and related manuals thoroughly before installing or operating the equipment, and keep it handy for future reference.

"Safety Conventions" Please thoroughly study the following section entitled "Safety Conventions" before operating the equipment. The safety symbols explained in this section are placed outside the left margin next to the text to which they apply. This unit is designed for use by specialists or persons thoroughly familiar with the field. Make sure that the end user receives the Instruction Manual delivered with this unit.

Before use..... When the unit is received, inspect it for damage suffered in transport and check whether it is the item you ordered. In the unlikely event that it was damaged in transport or does not function according to specifications, please contact the SHINKAWA Office or dealer nearest you. Store the unit under the ambient conditions given in the specification. Avoid places where it is exposed to high humidity or corrosive gases.

i

SAFETY CONVENTIONS

VM-5U

Make it a rule to follow the instructions given in this manual. This manual contains important information designed to prevent personal injury and property damage, and ensure safe operation of the equipment. Familiarize yourself with the signs and symbols explained below before proceeding to read the manual, and observe the instructions given.

■ Explanation of signs Symbols

Explanation Indicates a potentially hazardous situation which, if not avoided, could result in death

WARNING or serious injury. CAUTION

Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to permit for property-damage-only accidents.

◊ "Serious injury" refers to such injuries as loss of eyesight, injuries, burns (due to heat or cold), electric shock, fractures, and poisoning, that have permanent aftereffects and require hospitalization or long-term outpatient treatment. ◊ "Moderate or minor injury" refers to such injuries as burns and electric shock that do not require hospitalization or long-term outpatient treatment.

"Property-damage-only accidents" refers to

consequential damage related to destruction of property and damage to the equipment.

■ Explanation of symbols Symbols

Explanation

Indicates a prohibited action. Details are given in the text next to the symbol.

Indicates a mandatory action. Details are given in the text next to the symbol.

ii

SAFETY CONVENTIONS

VM-5U

To ensure safe use of this equipment, strictly observe the safety precautions provided in this manual, as well as installation methods and methods of use stipulated by laws and regulations. SHINKAWA Sensor Technology will not be liable for damage, etc. due to methods of use contravening to the instructions provided here.

■ Safe use

WARNING Make sure to ground. May cause electric shock or malfunction. Connect earth wire

Make sure to turn the power off before any wiring work. PROHIBITION

Will cause electric shock.

CAUTION Connect the input signal within the voltage range described in the specification to the input terminals. MANDATORY

Will cause damage and malfunction of the instrument.

Install the monitor unit and its relay module unit in the same location in the instrument rack. MANDATORY

MANDATORY

Will cause damage to the instrument and malfunction of the turbine monitoring system.

A printed circuit board and electronic products may receive damage with the static electricity of a human body. Touch the metal part once and discharge your static electricity before dealing with it. Will cause damage and malfunction of the instrument.

Do not touch parts and soldered surfaces of the monitor unit. Will cause damage and malfunction of the instrument. PROHIBITION

The monitor unit is a precision instrument. Take care not to expose it to excessive shock or vibration. PROHIBITION

Do not change the parameter settings during operation. May cause unexpected alarm output.

PROHIBITION

Do not pull out the face plate during operation. Will cause damage to the instrument and malfunction of the turbine monitoring system.

PROHIBITION

PROHIBITION

Do not measure insulation resistance and dielectric strength other than those at places specified. Will cause damage to the instrument.

Do not remodel this monitor unit without permission. Otherwise the guarantee can not be made. PROHIBITION

iii

SAFETY CONVENTIONS

VM-5U

■ EMC(Electro-magnetic compatibility) The EMC of each VM-5 Series monitor is evaluated by various noise tests. However, its characteristics may vary with on environmental conditions such as the magnitude of noise, ambient temperature, humidity and the arrangement of equipment. For the above reason, when operating the monitor, please observe the following CAUTION.

CAUTION MANDATORY

MANDATORY

MANDATORY

MANDATORY

MANDATORY

PROHIBITION

PROHIBITION

The monitor unit should be operated by specialists or . personnel who have knowledge of it When a shielded cable is used, the length of the unshielded cable section should be less than 100mm. For each relay used near this monitor unit, devices related to this monitor unit or signal cables connecting the monitor unit and these devices, install a surge killer. Firmly tighten each screw used for mounting each unit. In additional, always close the face plate for the monitor unit, then fix it with knurled screws. In order to prevent the system from its malfunction when the monitor unit fails, provide the systematic interlock function. Do not wire input signal cables in parallel with control and power cables. It is recommended that separated wire ducts be used for these cables. Do not use any radio equipment near the monitor unit.

■ Noise filter Noise transmitted through in each cable may be rejected to some extent by inserting a ferrite core in the cable (note 1). If the cable passes through noisy surroundings, it is recommended that such a noise prevention device is used. (note 1)

ZCAT3050-1330

:

TDK

iv

TABLE OF CONTENTS

VM-5U

1. GENERAL INFORMATION ---------------------------------------------------------------------------------------------------

1

2. SPECIFICATIONS ---------------------------------------------------------------------------------------------------

2

3. OUTLINE DRAWING ---------------------------------------------------------------------------------------------------

3

4. INTERCONNECTION ---------------------------------------------------------------------------------------------------

4

5. DESCRIPTION OF FUNCTIONS 5-1

DISPLAY

-------------------------------------------------------------------------------------- 21

5-2

ALARM FUNCTIONS

5-3

DANGER(DAN)ALARM

5-4

ALERT(ALE)ALARM

5-5

OK(INPUT ABNORMAL)ALARM

5-6

ALARM DELAY FUNCTION

5-7

FIRST OUT DISPLAY

5-8

SEQUENCE FUNCTION

5-9

BYPASS FUNCTION-------------------------------------------------------------------------- 22

---------------------------------------------------------------------- 21 -------------------------------------------------------------------- 21 ----------------------------------------------------------------------- 21 -------------------------------------------------------- 21

-------------------------------------------------------------- 21

---------------------------------------------------------------------- 22 ------------------------------------------------------------------ 22

5-10 POWER ON TIMER MODE

-------------------------------------------------------------- 22

5-11 ALARM RELAY MODE

-------------------------------------------------------------------- 23

5-12 ALARM RESET MODE

-------------------------------------------------------------------- 23

5-13 MONITOR OUTPUT

------------------------------------------------------------------------ 23

5-14 RECORDER OUTPUT------------------------------------------------------------------------ 23 5-15 SELF-DIAGNOSTIC FUNCTION 5-16 POWER SEQUENCE

------------------------------------------------------- 23

---------------------------------------------------------------------- 23

5-17 TIMED OK CHANNEL DEFEAT 5-18 SUPPRESSION FUNCTION

--------------------------------------------------------- 23

------------------------------------------------------------- 23

6. DESCRIPTION OF PARTS 6-1

DESCRIPTION OF FRONT PANEL/SIDE VIEW

6-2

DESCRIPTION OF PARTS

6-3

DESCRIPTION OF LCD DISPLAY

----------------------------------- 24

--------------------------------------------------------------- 25

v

----------------------------------------------------- 26

TABLE OF CONTENTS

VM-5U

7. PARAMETER SETTING

8.

7-1

WITHDRAWAL OF FACE PLATE

------------------------------------------------------ 27

7-2

BASIC KEY OPERATIONS

7-3

DIP SWITCH SETTING

7-4

PARAMETER SETTING 1

---------------------------------------------------------------- 31

7-5

PARAMETER SETTING 2

---------------------------------------------------------------- 40

--------------------------------------------------------------- 29

-------------------------------------------------------------------- 30

FUNCTIONAL DIAGRAM 8-1

BLOCK DIAGRAM

-------------------------------------------------------------------------- 48

8-2

FUNCTIONAL BLOCK DIAGRAM

------------------------------------------------------ 49

9. MAINTENANCE 9-1

RECOMMENDED MAINTENANCE EQUIPMENT ------------------------------------ 51

9-2

VERIFICATION OF OK(INPUT ABNORMAL ALARM) OPERATION

9-3

VERIFICATION OF DANGER(DAN)/ ALERT(ALE)ALARM OPERATION

----------- 54

9-4

VERIFICATION OF MEASURED VALUE AND RECORDER OUTPUT

9-5

ADJUSTMENT OF MEASURED VALUE AND RECORDER OUTPUT ZERO SPAN

10.

--------- 52

------ 56

---------- 58

9-6

REPLACEMENT OF ALUMINUM ELECTROLYTIC CAPACITOR

------------- 60

9-7

REPLACEMENT OF LCD UNIT

9-8

LCD CONTRAST ADJUSTMENT

------------------------------------------------------- 62

9-9

LCD BACKLIGHT ADJUSTMENT

------------------------------------------------------ 63

--------------------------------------------------------- 61

TROUBLESHOOTING 10-1 LCD DISPLAY CONTENT ABNORMAL 10-2 OK DISPLAY FLASHES

---------------------------------------------- 64

------------------------------------------------------------------- 65

10-3 MEASURED VALUE ABNORMAL

------------------------------------------------------ 66

10-4 OK(INPUT ABNORMAL ALARM) DOES NOT OPERATE 10-5 ALERT(ALE)ALARM DOES NOT OPERATE

----------------------- 67

---------------------------------------- 67

10-6 DANGER(DAN)ALARM DOES NOT OPERATE

------------------------------------ 68

10-7 ERRORNEOUS OPERATION OF DANGER(DAN)/ ALERT(ALE)ALARM 10-8 NO RECORDER OUTPUT

---------- 68

--------------------------------------------------------------- 69

vi

1.

GENERAL INFORMATION

VM-5U

OVERVIEW This is a highly reliable dual channel vibration monitor which monitors the shaft vibration of rotating machinery detected by a contact velocity vibration transducer. Both a 10-slot rack mounting type and a single-unit independent type with a built-in power supply are available so that it can respond flexibly to any system design from medium and small scale rotating machinery to TSI. The monitor accepts signals detected by a CV Series Velocity transducer and displays them on LCD. It is also possible to set ALERT and DANGER alarm levels independently to detect machine failures early on and inform the operator of these failures. It has a built-in self-diagnostic function to inform the operator of input transducer failures, thereby preventing rotating machinery from false shutdowns.

FEATURES •

Conforms to API St’d 670

•

The monitor is available as a single unit independent type or a rack mounting type.

•

Has a self-diagnostic function.

•

Allows the operator to change each setting even in the field.

•

Important information such as measured value and alarm set value is normally displayed.

•

Can isolate recorder output (option).

•

LED display / contact output (DANGER / ALERT alarm).

•

LED display / contact output (Input abnormal alarm).

•

For alarm output wiring proceed as described in the instruction manuals for the VM-5G Single Unit Instrument Rack and VM-5Y Relay Module Unit used in

Mandatory

combination with this monitor unit. • Caution

If megger test is made on the signal cable between transducer and monitor, disconnect the cable from transducer and monitor. Be sure to discharge the charged electric load before connecting the cable to the transducer and monitor. If this caution is not adhered to, the transducer and monitor could be damaged.

-1-

2.

SPECIFICATIONS

VM-5U

Model Code / Additional Spec. Code(

VM-5UMonitor range

Input signal Low cut-off frequency *2

1 0 to 10mm/s pk 2 0 to 20mm/s pk 3 0 to 50mm/s pk 4 0 to 100µm pk-pk 5 0 to 200µm pk-pk 6 0 to 500µm pk-pk 7 0 to 10mm/s rms *1 8 0 to 20mm/s rms *1 A 0 to 50mm/s rms *1 B 0 to 0.5in/s pk C 0 to 1in/s pk D 0 to 2in/s pk E 0 to 5mils pk-pk F 0 to 10mils pk-pk G 0 to 20mils pk-pk H 0 to 0.5in/s rms *1 J 0 to 1in/s rms *1 K 0 to 2in/s rms *1

1 CV-851 1 10Hz or less 2 CV-86 2 20Hz 3 CV-87 3 50Hz 4 CV-852 4 9.5Hz Seismic filter *3 5 14Hz Seismic filter *3 6 15Hz Seismic filter *3 40Hz(36dB/oct) 7 Pipe filter *3 60Hz(36dB/oct) 8 Pipe filter *3

No entry if additional spec. code is not specified.

)

-

High cut-off Alarm reset Alarm reset Alarm reset Rectification Recorder output frequency *2 (DANGER) (ALERT) (OK) 1 100Hz 0 Average value 0 4 to 20mADC 0 AUTO-RESET 0 AUTO-RESET 0 AUTO-RESET 2 200Hz 1 pk-pk 1 1 to 5VDC 1 SELF-HOLD 1 SELF-HOLD 1 SELF-HOLD 3 500Hz rms Output card 2 (additional spec./RMS) 2 /IS… or /RE… 4 1kHz option 5 2kHz 6 5kHz Note) *1 Rectification circuit (option) required for this rms range. *2 Select so that [high cut-off frequency≥Low cut-off frequency×10] 7 10kHz In the monitor ranges for displacement vibration measurement (e.g., 0 to 100µm pk-pk), the monitor also picks up low-frequency vibrations from the surroundings, such as transmitted by the piping and foundation, so that the measured value may be greater than the vibrations produced by the monitored object itself. This should be taken into account when selecting a low cut-off frequency. The use of seismic and pipe filters is recommended where low-frequency ambient vibration are especially strong. *3 A filter card (option) is required for use of seismic and pipe filters. The seismic filter can be turned ON/OFF (IN/OUT) by an external contact signal. (Preset to OFF(OUT)) At seismic filter is OFF (OUT), the low cut-off frequency is 2Hz. The pipe filter is normally ON (IN) ; it cannot be set to OFF (OUT).

-

-

-

Relay mode Relay mode Relay mode Alarm delay time Alarm delay time Alarm output type First out*4 (DANGER) (ALERT) (OK) (DANGER) (ALERT) 0 3 sec. 0 3 sec. NORMALLY NORMALLY NORMALLY CH1 : 2 points (DANGER1,ALERT1) 0 OFF 0 0 0 1 DE-ENERGIZED DE-ENERGIZED DE-ENERGIZED 1 CH2 : 2 points (DANGER2,ALERT2) 1 ON 1 sec. 1 1 sec. 2 6 sec. 2 6 sec. NORMALLY NORMALLY NORMALLY 4 points (DANGER1,DANGER2, 1 1 1 ENERGIZED ENERGIZED ENERGIZED 2 ALERT1,ALERT2) 3 None 3 None CH2 : None

/RMS/(IS rms. rectification When rectification code 2 is selected, specify this option code.

Isolate output

or RE

)/5G

Recorder option output 2 0 to -10VDC 3 0 to 10VDC 4 0 to -5VDC 5 0 to 5VDC

0 4 to 20mADC 1 1 to 5VDC 2 0 to -10VDC 3 0 to 10VDC 4 0 to -5VDC 5 0 to 5VDC When recorder output code 2 is selected, specify this option code.

/TRP/EX

Input power supply requirements 0 85 to 264VAC 1 24VDC 2 110VDC

1 7

TIIS(IEC) NEPSI

Standard Specifications

DANGER1 : ALERT1 : DANGER2 : ALERT2 : Unless specified otherwise, preset to : DANGER : 100% of monitor range ALERT : 90% of monitor range SEQUENCE SET : ×1.0 to 10.0 (×0.1 step) VALUE Preset to ×1.0 unless specified otherwise. (to increase alarm set CAUTION : Set the alarm set value so that its designated value during operation of multiple is within 110% of the measurement range the sequence circuit) during operation of the sequence circuit. If set to more than 110%, alarm may not be output. SUPPRESSION : 0.0 to 10.0 % of monitor range (0.1 % step) FUNCTION SET VALUE Preset to 2.0 % unless specified otherwise. CAUTION : When the measurement value is not more than suppression function set value, indication and recorder output value shall be as 0 %. OTHERS

MEASURED VALUE

Intrinsically safe CE marking

Note) *4 It is necessary to set all monitor units in the same rack in first out function ON when it is used first out function. Note) Input abnormal alarm is not applicable in case of CV-85, CV-87 input signal.

Ordering Information ALARM SET VALUE

ALARM SET POINT ALARM SET RANGE ALARM SET ACCURACY ALARM SET REPEATABILITY ALARM OUTPUT

Tropical spec.

/ CEM

ALARM INDICATOR ABNOR.ALARM INDICATOR BYPASS INDICATOR TRANSDUCER INPUT

DANGER : ALERT : OK :

(red LED) (yellow LED) (green LED)

BYPASS : (red LED) CV Series Number of input points : 2 points INPUT IMPEDANCE Approx.10kΩ (CV-851 input) Approx. 50kΩ (CV-852, CV-86, CV-87 input) EXTERNAL CONTACT Contact type:Dry contact INPUT Contact for external reset (FROM REAR PANEL) Contact for sequence BAR GRAPH METER Recorder output conversion accuracy ±2.5% of F.S. DIGITAL METER Recorder output conversion accuracy ±1.0% of F.S. RECORDER OUTPUT ±0.5% of F.S. at calibration frequency at 25°C CONVERSION ±2.0% of F.S. at calibration frequency at 0 to 65°C ACCURACY (the calibration frequency is determined by the cut-off frequency range.) RECORDER OUTPUT Voltage or current output proportional to monitor range (FROM REAR PANEL) 1 to 5VDC (output impedance : 250Ω) Standard Specifications 4 to 20mADC (max.load resistance : 500Ω) 0 to -10VDC*,0 to 10VDC*,0 to -5VDC*,0 to 5VDC* 4 points (DANGER1,ALERT1,DANGER2,ALERT2) (output impedance : 100Ω) (*option) 0 to 110% of monitor range Number of output points : 2 points ±1.0% of F.S. or less MONITOR OUTPUT Input signal is output via a buffer amplifier. (FROM FRONT, REAR Signal level : ±15V (CV-85,CV-87 Input) ±0.1% of F.S. or less PANEL) 0.8 to 22VDC (CV-86 Input) 5 points (DANGER1,ALERT1,DANGER2,ALERT2,OK) or Output impedance : 100Ω (load resistance : 50kΩ or more) 6 points (DANGER1,ALERT1,DANGER2,ALERT2,OK1,OK2) TEMPERATURE Operating temperature : 0 to 65°C(32 to 149°F) RANGE LCD digital meter with 5 digits (7 segments, with back light) Storage temperature : -30 to +85°C(-22 to +185°F) Relative humidity : 20 to 95%RH(noncondensing) LCD bar graph meter (40 segments, with back light) : Aluminum Munsell N-4.0 (equiv.) * Measurement value and alarm set value are indicated on MATERIAL AND FINISH Face plate the digital meter and bar graph meter simultaneously. MASS Monitor : max.0.7kg (including single unit instrument rack : max.2.5kg)

39502E4.1

-2-

3.

OUTLINE DRAWING

VM-5U

No.

Name

No.

Name

1

LCD display

8

Tag, Ser.No. plate

2

DANGER lamp

9

LCD board

3

ALERT lamp

10

Slide frame

4

OK lamp

11

Main board frame

5

BYPASS lamp

12

Main board

6

Monitor output connector

13

DIN connector (64pin)

7

Name plate

---

Finish

Face plate : Munsell N-4.0 (equiv.)

Mass

Max. 0.7kg (Max. 1.6lb REF.)

Unless otherwise specified, units are in millimeters (mm) and grams (g). Reference dimensions in parentheses are in inches (in) and pounds (lb)

-3-

----------

4.

INTERCONNECTION •

VM-5U

Do not use the blank terminals.

Prohibition

INTERCONNECTION OF TRANSMISSION CABLE Connection of signal transmission cable • Mandatory

Use the exclusive cable for connection with the CV Series Velocity Transducer. Use a twisted pair, shielded cable with the specified cross section for connection between the junction terminal and monitoring device. Select suitable cable for operating environments.

•

The cable length between CV Series Velocity Transducer and Monitor should not exceed 300 meters. Excessive length may limit the system’s frequency response.

•

Keep cabling away from power and control lines, to prevent noise interference.

•

Cable should be securely fixed. Prevent the cable from bending sharply, twisting, kinking, knotting, and straining. The recommended minimum bend radius is 80mm. Shinkawa recommends that the cable should be routed through conduit to prevent physical damage and noise interference.

-4-

4.

INTERCONNECTION

VM-5U

(1) Model CV-85 Velocity Transducer and VM-5G Single Unit Instrument Rack Connected terminals Signal name

Wire no.

CH1 Terminal name

CH2 No.

Terminal name

No.

Output

A

IN

A1

IN

B1

Common, Shield

B, C

COM

A2

COM

B2

-5-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

NoteNo. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended).

2)

Use a twisted pair shielded cable with AWG No. 18 to No. 20 gage (0.5 0.75mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-6-

4.

INTERCONNECTION

VM-5U

(2) Model CV-85 Velocity Transducer and VM-5Y1,2,3 Relay Module Unit Connected terminals Signal name

Wire no.

CH1 Terminal name

CH2 No.

Terminal name

No.

Output

A

IN

A1

IN

B1

Common, Shield

B, C

COM

A2

COM

B2

-7-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

Note No. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended).

2)

Use a twisted pair shielded cable with AWG No. 18 to No. 20 gage (0.5 0.75mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-8-

4.

INTERCONNECTION

VM-5U

(3) Model CV-861 Velocity Transducer and VM-5G/VM-5Y… Connected terminals Signal name

Wire no.

CH1

CH2

Terminal name

No.

Terminal name

No.

Signal, Power

A

IN

A1

IN

B1

Common, Shield

B, C

COM

A2

COM

B2

-9-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

Note No. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended). Do not connect the monitor to terminal C on the relay terminal block.

2)

Use a twisted pair shielded cable with AWG No. 16 to No. 20 gage (0.5 1.25mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-10-

4.

INTERCONNECTION

VM-5U

(4) Model CV-862 Velocity Transducer and VM-5G/VM-5Y… Connected terminals Signal name

Wire no.

CH1 Terminal name

Output(white) 0V,Shield(black)

CH2 No.

Terminal name

No.

A

IN

A1

IN

B1

B

COM

A2

COM

B2

C

COM

A2

COM

B2

-11-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

Note No. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended). Do not connect the monitor to terminal C on the relay terminal block.

2)

Use a twisted pair shielded cable with AWG No. 16 to No. 20 gage (0.5 1.25mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-12-

4.

INTERCONNECTION

VM-5U

(5) Model CV-861 Velocity Transducer and VM-5G/VM-5Y□ Intrinsically Safe Safety barrier terminals Hazordous area

Safe area

Connected terminals 1CH

2CH

Signal name

Wire no.

No.

No.

Terminal name

No.

Terminal name

No.

Output(white)

A

3

1

IN

A1

IN

B1

Common(black)

B

4

2

COM

A2

COM

B2

Shield

C

Earth

Earth

COM

A2

COM

B2

-13-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

•

Note No. in drawing

Caution

1)

The cables which connect between the junction box and safty barrer, should be used with two wires twisted shield type with AWG No.16 to 20 gage (0.5mm2 to 1.25mm2 ) stranded conductors. (Cw≦0.243µF、Lw≦33.34mH) Keep the cabling away from power and control lines, and the other potential sources to prevent noise interference.

2)

The transducer must be installed directry on a machine case structure. (The structure that is in need of prperly grounded, consist of conductive materials.)

3)

The safety barrier must be installed in the enclosure.

4)

The cable shield wire must be connected to common terminal and should be strapped by the shortest length. (Less than 100mm recommended)

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

Warning

•

If wired according to this drawing, the resistance of the safety barrier causes the input voltage of the monitor to drop by about 1%.

-14-

4.

INTERCONNECTION

VM-5U

(6) Model CV-862 Velocity Transducer and VM-5G/VM-5Y□ Intrinsically Safe Safety barrier terminals Hazordous area

Safe area

Connected terminals 1CH

2CH

Signal name

Wire no.

No.

No.

Terminal name

No.

Terminal name

Output(white)

A

3

1

IN

A1

IN

B1

B

4

2

COM

A2

COM

B2

C

Earth

Earth

COM

A2

COM

B2

0V,Shield(black)

-15-

No.

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

•

Note No. in drawing

Caution

1)

The cables which connect between the junction box and safty barrer, should be used with two wires twisted shield type with AWG No.16 to 20 gage (0.5mm2 to 1.25mm2 ) stranded conductors. (Cw≦0.243µF、Lw≦33.34mH) Keep the cabling away from power and control lines, and the other potential sources to prevent noise interference.

2)

The transducer must be installed directry on a machine case structure. (The structure that is in need of prperly grounded, consist of conductive materials.)

3)

The safety barrier must be installed in the enclosure.

4)

The cable shield wire must be connected to common terminal and should be strapped by the shortest length. (Less than 100mm recommended)

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

Warning

•

If wired according to this drawing, the resistance of the safety barrier causes the input voltage of the monitor to drop by about 1%.

-16-

4.

INTERCONNECTION

VM-5U

(7) Model CV-87 Velocity Transducer and VM-5G Single Unit Instrument Rack Connected terminals Signal name

Wire no.

CH1 Terminal name

CH2 No.

Terminal name

No.

Output

A

IN

A1

IN

B1

Common, Shield

B, C

COM

A2

COM

B2

-17-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

Note No. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended).

2)

Use a twisted pair shielded cable with AWG No. 18 to No. 20 gage (0.5 0.75mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-18-

4.

INTERCONNECTION

VM-5U

(8) Model CV-87 Velocity Transducer and VM-5Y1,2,3 Relay Module Unit Connected terminals Signal name

Wire no.

CH1 Terminal name

CH2 No.

Terminal name

No.

Output

A

IN

A1

IN

B1

Common, Shield

B, C

COM

A2

COM

B2

-19-

4.

INTERCONNECTION •

VM-5U

Be sure to observe the following cautions at the time of interconnection.

Mandantory

Note No. in drawing

• Warning

Caution

1)

Shield should be terminated to COM. Shorten the wires at connection as short as possible to obtain shielding effect (less than 100mm recommended).

2)

Use a twisted pair shielded cable with AWG No. 18 to No. 20 gage (0.5 0.75mm2) stranded conductors for wiring between the junction terminal and the monitor (max. length 300m). Keep wiring away from power and control lines to prevent noise interference.

3)

Transducer mounted directly on a conductive structure which is connected to supply source ground.

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-20-

5.

DESCRIPTION OF FUNCTIONS

VM-5U

5-1 DISPLAY Measured vibration values and alarm set values are normally displayed on individual LCD for each channel.

5-2 ALARM FUNCTIONS ALERT alarm, DANGER alarm and OK (input abnormal) alarm are contact-output and displayed on LEDs. •

Alarm limit values are input and displayed separately for each channel.

•

Alarm is output separately for each channel, if the VM-5G Single Unit Instrument Rack and VM-5Y Relay Module Unit have an SPDT relay contact arrangement. In case of a DPDT relay, alarm outputs by OR voting logic between CH1 and CH2.

5-3 DANGER (DAN) ALARM A measured value exceeding the DAN alarm set values causes alarm output at the DAN contact and DAN alarm display. For details refer to 7. PARAMETER SETTING on page 27.

5-4 ALERT (ALE) ALARM A measured value exceeding the ALE alarm set values causes alarm output at the ALE contact and ALE alarm display. For details refer to 7. PARAMETER SETTING on page 27.

5-5 OK (INPUT ABNORMAL) ALARM When the level of the signal from the transducer becomes abnormal, OK alarm outputs and LED is flashing. (Flashing interval : 2Hz) It is also activated when excessive signal input more than 100% of monitor range.

In this case, flashing interval vary 1Hz.

This condition is maintained by the

off-delay timer for approx. 15 sec. after the level of the transducer signal has returned to normal.

5-6 ALARM DELAY FUNCTION To prevent output of false DAN/ALE alarm due to noise, etc., a delay time can be specified separately for each channel. For details refer to 7. PARAMETER SETTING on page 27.

-21-

5.

DESCRIPTION OF FUNCTIONS

VM-5U

5-7 FIRSTOUT DISPLAY •

Installation in VM-5H3, 5W1 Instrument Rack Causes the alarm lamp of the channel that first output alarm to flash. • Installation in VM-5G Single Unit Instrument Rack Causes the lamp of the alarm first output to flash. For details refer to 7. PARAMETER SETTING on page 27. •

An alarm lamp set flashing by the First-out Display function cannot be reset by pressing the RES (RESET) key. (Reset by shorting between the RES and COM terminals.)

5-8 SEQUENCE FUNCTION To prevent alarm output due to excessive vibration generated during starting and stopping of the machine, this function expands the DANGER alarm and ALERT alarm set ranges by shorting between the SEQ. and COM terminals. • Warning

The machine is not protected if the alarm set value exceeds 110% of the monitor range due to operation of the sequence circuit.

5-9 BYPASS FUNCTION Used to disable alarm output while setting the alarm parameters, or during maintenance/inspection work. The alarm BYPASS lamp flashes or lights during this operation. Set by turning the BYPASS switch to ON. •

While BYPASS FUNCTION is in operation, the machine is not protected.

Warning

5-9-1 DANGER BYPASS Cuts off DANGER alarm. While cut off, the DANGER alarm and BYPASS lamps are flashing. This function is activated by means of the DANGER BYPASS switch. For details refer to 7. PARAMETER SETTING on page 27. •

If mounted in the VM-5H3 or VM-5W1 Instrument Rack, all units in the instrument rack can be set collectively to DANGER BYPASS. For details refer to VM-5H3 or VM-5W1 Instrument Rack instruction manual.

5-9-2 CH1 BYPASS DANGER alarm, ALERT alarm, OK alarm, display and recorder output of CH1 are cut off. While cut off, the OK lamp goes off and the BYPASS lamp lights. This function can be activated by means of the CH1 BYPASS switch. For details refer to 7. PARAMETER SETTING on page 27. 5-9-3 CH2 BYPASS DANGER alarm, ALERT alarm, OK alarm, display and recorder output of CH2 are cut off. While cut off, the OK lamp goes off and the BYPASS lamp lights. This function can be activated by means of the CH2 BYPASS switch. For details refer to 7. PARAMETER SETTING on page 27.

5-10 POWER ON TIMER MODE Operates for approx. 5sec. after the power is turned on (for approx. 27 sec. in case of pk-pk detection). In this mode, all alarm functions are disabled and the BYPASS and OK lamps flash. -22-

5.

DESCRIPTION OF FUNCTIONS

VM-5U

5-11 ALARM RELAY MODE Each alarm contact can be set to either normally de-energized or normally energized. Alarm contact operation Monitor power ON

Monitor power OFF

Normal state

Alarm state

NO contact NORMALLY DE-ENERGIZED

OPEN

OPEN

CLOSE

NO contact NORMALLY ENERGIZED

OPEN

CLOSE

OPEN

NC contact NORMALLY DE-ENERGIZED

CLOSE

CLOSE

OPEN

NC contact NORMALLY ENERGIZED

CLOSE

OPEN

CLOSE

For details refer to 7. PARAMETER SETTING on page 27.

5-12 ALARM RESET MODE The automatic reset of all alarm output and alarm lamps can be set when the measured value or input signal return to normal. In addition to above, the self-holding function can be also set for each alarm output that holds the alarm condition until reset by setting RES key (inside of the front panel) or by shorting between RES and COM terminal. •

Alarm reset is not possible until the output condition has been released.

For details refer to 7. PARAMETER SETTING on page 27.

5-13 MONITOR OUTPUT For vibration analysis, the vibration waveform signal is output from the BNC connector on the monitor front panel and buffer output terminal on the rear panel (VM-5G Single Unit Instrument Rack, VM-5Y Relay Module Unit) via a buffer amplifier.

5-14 RECORDER OUTPUT An analog signal proportional to the vibration value is output from the terminal block.

5-15 SELF-DIAGNOSTIC FUNCTION Any failures in the input system, such as sensor broken or imperfect connections, are detected, then an OK alarm is contact-output and (simultaneously), the OK lamp flashes.

5-16 POWER SEQUENCE If mounted in the VM-5G Single Unit Instrument Rack, the secondary power supply can be cut off by shorting between the P-S (POWER SEQUENCE) and COM terminals. • Caution

This function can be used for pulling out or pulling in the monitor unit at the emergency time. However, do not use for long time shorting of more than one (1) minute or turning on and off repeatedly. Also, the parallel connection for the two (2) or more monitors should not be allowed.

5-17 TIMED OK CHANNEL DEFEAT When on setting, when OK alarm is output, DANGER alarm, ALERT alarm, display, and recorder output are disabled. DANGER ALERT, display and recorder output are not disabled, in case of excessive signal input from sensor. For details refer to 7. PARAMETER SETTING on page 27.

5-18 SUPPRESSION FUNCTION This function can suppress the measurement around zero measurement point of the monitor by the effect of the piping vibration or electric noise, etc. during the machine stopping. The suppression can be set at 0.0 to 10.0 % (0.1% step) of the monitor range. ex.) If the suppression is set at 2.0%, monitor measurement less than 2.0% shall be output as 0.0%. -23-

6.

DESCRIPTION OF PARTS

VM-5U

6-1 DESCRIPTION OF FRONT PANEL/SIDE VIEW No.

Name

No.

Name

1

LCD display

8

Tag, Ser.No. plate

2

DANGER lamp

9

LCD board

3

ALERT lamp

10

Slide frame

4

OK lamp

11

Main board frame

5

BYPASS lamp

12

Main board

6

Monitor output connector

13

DIN connector (64pin)

7

Name plate

---

-24-

----------

6.

DESCRIPTION OF PARTS

VM-5U

6-2 DESCRIPTION OF PARTS 1 LCD display This LCD display serves for display of measured values, alarm set values and other set values. 2 DANGER alarm lamp Lit when DANGER alarm is output. 3 ALERT alarm lamp Lit when ALERT alarm is output. 4 OK lamp Flashes (steady light in normal condition) when OK (input abnormal) alarm is output. 5 BYPASS lamp Flashes during DANGER bypass and lights during CHANNEL bypass. 6 Monitor output connector This is a BNC output connector for connection of an oscilloscope to observe the waveform, or for output to other devices such as an analyzer. The input signals from the transducers are output through a buffer amplifier. • Mandatory

Make sure to insulate the monitor output against earth. If not insulated, a 2-point earth system results, which may cause noise interference.

7 Name plate 8 Tag, Ser. No. plate The TAG NO. and SER.NO. are entered on this plate. 9 LCD board 10 Slide frame 11 Main board frame 12 Main board 13 DIN connector (64pin) Connector for connection to the VM-5G Single Unit Instrument Rack or VM-5H3 or VM-5W1 Instrument Rack.

-25-

6.

DESCRIPTION OF PARTS

VM-5U

6-3 DESCRIPTION OF LCD DISPLAY NO.

NAME

NO.

NAME

1

CH1 measured value (digital)

5

CH2 measured value (digital)

2

CH1 measured value (bar graph)

6

CH2 measured value (bar graph)

3

CH1 DANGER alarm set value

7

CH2 DANGER alarm set value

4

CH1 ALERT alarm set value

8

CH2 ALERT alarm set value

1 5 MEAS1 %

3

%

100 %

8

□□□MEAS2

MEAS1

4

7

MEAS2

100 %

80

80

60

60

40

40

6

2 20

0

20

0

LCD display

-26-

7.

PARAMETER SETTING

VM-5U

7-1 WITHDRAWAL OF FACE PLATE •

Pull out the face plate to gain access to the keys and DIP switches for setting the parameters located inside the unit.

1) Evenly loosen the knurled screw at the top and bottom of face plate.

•

Should screw manually. Do not use any tools.

Prohibition

2) Pull out the face plate.

•

Do not pull out beyond the depth of the slide frame.

•

Make sure not to touch internal chassis.

•

Failure to turn off the power before pulling the monitor unit out of the rack will result

Prohibition

Prohibition

Caution

in serious damage and accidents.

-27-

7.

PARAMETER SETTING

VM-5U

3) Open the face plate toward the right.

•

Make sure not to touch internal printed circuit board.

Prohibition

4) The keys and DIP switches for setting the parameters are located inside the unit. Specification set keys

SET

RES CHK

1 2 3 4 5 6

ON

DIP switches

-28-

1BY 2BY DBY MS1 MS2 N•A

7.

PARAMETER SETTING

VM-5U

7-2 BASIC KEY OPERATIONS • SET

(SET) key

:

Used to change the display mode of the LCD display and to finalize input.

•

(UP) key

:

Used to change parameters and increment set values.

•

(DOWN) key :

Used to change parameters and decrement set values.

• RES

(RESET) key :

Used to reset alarms set to self-holding.

•

Alarm reset is not possible until the output condition has been released.

•

An alarm lamp set flashing by the First-out Display function cannot be reset. (Reset by shorting between the RES and COM terminals.)

• CHK

(CHECK) key :

The CHECK key is used to adjust the gain while changing set values with the UP and DOWN keys. For example, if the CHECK key is pressed while the value 0.1 appears on the MEAS 2 LED display, a value corresponding to the measurement range × 0.1 can be set.

•

Each operation of the CHECK key will multiply the multiplier by 10. :

When the CHECK key is pressed during normal monitoring, the monitor will go through self-diagnosis in the following sequence : (1) LCD, LED display test (all lamps light) (2) Self-diagnosis (3) Display of diagnosis result

•

(Normal)

(Abnormal)

The diagnosis result for CH1 is indicated on the MEAS 1 display and that for CH2 on the MEAS 2 display.

•

If an abnormality is found as a result of self-diagnosis, the error content is displayed after approx. 3 seconds.

•

In case of more than one abnormality, error contents are displayed at 3-second intervals. Error content display items CH1 OK (input abnormal) alarm HIGH CH2 OK (input abnormal) alarm HIGH CH1 OK(input abnormal) alarm LOW CH2 OK(input abnormal) alarm LOW CH1 A/D input 5V side over CH2 A/D input 5V side over CH1 A/D input 0V side over CH2 A/D input 0V side over

-29-

Display

7.

PARAMETER SETTING

VM-5U

7-3 DIP SWITCH SETTING OFF ON

1

1) 1BY(1CH BYPASS) S.W.

2

2) 2BY(2CH BYPASS) S.W.

3

3) DBY(DANGER BYPASS) S.W.

4

4) MS1(MODE-SELECT1) S.W. (normally OFF)

5

5) MS2(MODE-SELECT2) S.W.

6

6) N·A(not available)

DIP Switches

1) 1BY (CH1 BYPASS) Switch "ON"

To select CH1 BYPASS function.

"OFF" Normal monitoring 2) 2BY (CH2 BYPASS) Switch "ON"

To select CH2 BYPASS function.

"OFF" Normal monitoring 3) DBY (DANGER BYPASS) Switch "ON"

To select DANGER BYPASS function.

"OFF" Normal monitoring 4) MS1 (MODE-SELECT1) Switch (normally OFF) •

Set normally to “OFF”. Parameter setting mode is disabled.

5) MS2 (MODE-SELECT2) Switch “ON” For setting the alarm reset mode, alarm delay time, alarm relay mode, first-out display, and timed OK channel defeat. Also enables setting the address when used in combination with the VM-5H3 or 5W1 Instrument Rack and VM-5P1,2 Communication/Phase Marker Unit or VM-53 Dual Communication Unit.

To PARAMETER SETTING 1.

“OFF” For changing the set values for DANGER alarm and ALERT alarm, and adjusting measured value and recorder output zero span.

-30-

To PARAMETER SETTING 2.

7.

PARAMETER SETTING

VM-5U

7-4 PARAMETER SETTING 1 7-4-1 PARAMETER SETTING 1 •

Setting the parameters for alarm reset mode, alarm delay time, alarm relay mode, first-out display, and timed OK channel defeat is enabled.

•

Setting the address for use in combination with the VM-5H3 or VM-5W1 Instrument Rack and VM-5P1,2 Communication/Phase Marker Unit or VM-53 Dual Communication Unit is enabled.

7-4-2 MODE SELECT SWITCH SETTING OFF ON 1

1)1BY(CH1 BYPASS) S.W.

2

2)2BY(CH2 BYPASS) S.W.

3

3) DBY(DANGER BYPASS) S.W.

4

4) MS1(MODE-SELECT1) S.W. (normally OFF)

5

5) MS2(MODE-SELECT2) S.W.

6

6) N·A(not available)

DIP switches Confirm that the MS1 (MODE-SELECT1) switch is "OFF". Place the MS2 (MODE-SELECT2) switch in "ON" position. •

Setting other than the above are not enabled to set the parameters.

-31-

7.

PARAMETER SETTING

VM-5U

7-4-3 DISPLAY SCREEN HIERARCHY The flow chart shows the hierarchy of the PARAMETER SETTING 1 display.

PARAMETER SETTING 1

2

CH1 DANGER alarm reset mode set

CH2 DANGER alarm reset mode set

CH1 ALERT alarm reset mode set

CH2 ALERT alarm reset mode set

CH1 OK alarm reset mode set

CH2 OK alarm reset mode set

CH1 DANGER alarm delay time set

CH2 DANGER alarm delay time set

CH1 ALERT alarm delay time set

CH2 ALERT alarm delay time set

CH1 OK alarm delay time set

CH2 OK alarm delay time set

1

-32-

7.

PARAMETER SETTING

VM-5U

1 CH1 DANGER alarm relay mode set

CH2 DANGER alarm relay mode set

CH1 ALERT alarm relay mode set

CH2 ALERT alarm relay mode set

CH1 OK alarm relay mode set

CH2 OK alarm relay mode set

First-out display set

Timed OK channel defeat set

Address set

2

-33-

Display only if used in combination with the VM-5Y3,4,5,6 Relay Module Unit.

7.

PARAMETER SETTING

VM-5U

7-4-4 DISPLAY CONTENT The characters and numerals indicated on the LCD display when setting the parameters represent the following parameters and their status. MEAS 1 .... Displays the parameters that can be set.

MEAS 1

Display

Parameter CH1 DANGER alarm reset CH2 DANGER alarm reset

MEAS1 %

CH1 ALERT alarm reset

MEAS2

CH2 ALERT alarm reset

%

□□□MEAS2

MEAS1

100 %

100 %

CH1 OK alarm reset CH2 OK alarm reset

80

CH1 DANGER alarm delay time

80

CH2 DANGER alarm delay time CH1 ALERT alarm delay time 60

60

CH2 ALERT alarm delay time CH1 OK alarm delay time

40

CH2 OK alarm delay time

40

CH1 DANGER alarm relay mode 20

CH2 DANGER alarm relay mode

20

CH1 ALERT alarm relay mode CH2 ALERT alarm relay mode 0

0

CH1 OK alarm relay mode CH2 OK alarm relay mode

LCD display

First-out display Timed OK channel defeat Address (communication address ID (1 to 10))

-34-

7.

PARAMETER SETTING

VM-5U

MEAS 2 .... Displays the status of each parameter.

Display

LATCH self-hold

MEAS 2

NON LATCH auto-reset Alarm delay time None

MEAS1 % MEAS2

ENERGIZED ALARM (NORMALLY DE-ENERGIZED)

%

□□□MEAS2

MEAS1

100 %

Parameter status

100 %

DE-ENERGIZED ALARM (NORMALLY ENERGIZED) OFF

80

80

ON Alarm delay time 1 sec. 60

Alarm delay time 3 sec.

60

Alarm delay time 6 sec. 40

40

20

20

0

0

LCD display

-35-

7.

PARAMETER SETTING

VM-5U

7-4-5 KEY OPERATIONS The chart below describes the key operations for PARAMETER SETTING 1. •

The display is reset to normal if there is no key operation for approx. 60 sec.

LCD display Procedure

1

Key operation

SET

SET

SET

SET

9

SET

SET

13

Present status

Press SET key.

SET

Specify CH2 DANGER alarm reset mode.

Specify CH1 ALERT alarm reset mode. Select latch or non-latch with UP or DOWN key.

Present status

Press SET key.

Specify CH2 ALERT alarm reset mode. Select latch or non-latch with UP or DOWN key.

Present status

Press SET key.

Specify CH1 OK (input abnormal) alarm reset mode. Select latch or non-latch with UP or DOWN key.

Present status

Press SET key. Press UP or DOWN key.

12

Specify CH1 DANGER alarm reset mode.

Select latch or non-latch with UP or DOWN key.

Press UP or DOWN key.

10

11

Present status

Press SET key.

Press UP or DOWN key.

8

Remarks

Select latch or non-latch with UP or DOWN key.

Press UP or DOWN key.

6

7

Present status

Press UP or DOWN key.

4

5

Press SET key more than 5 sec.

MEAS 2 (Parameter Status)

Press UP or DOWN key.

2

3

MEAS 1 (Parameter)

Specify CH2 OK (input abnormal) alarm reset mode. Select latch or non-latch with UP or DOWN key.

Present status

Press SET key.

-36-

Specify CH1 DANGER alarm delay time.

7.

PARAMETER SETTING

VM-5U

LCD display Procedure

Key operation

SET

SET

19

SET

SET

23

SET

•

SET

Specify CH1 ALERT alarm delay time. Select NON (none), 1 sec., 3 sec., or 6 sec. with UP or DOWN key.

Present status

Press SET key.

Specify CH2 ALERT alarm delay time. Select NON (none), 1 sec., 3 sec., or 6 sec. with UP or DOWN key.

Present status

Press SET key.

Specify CH1 OK (input abnormal) alarm delay time. Select NON (none) with UP or DOWN key.

Present status

Press SET key.

Press UP or DOWN key.

24

25

Present status

Press SET key.

Press UP or DOWN key.

22

Specify CH2 DANGER alarm delay time. Select NON (none), 1 sec., 3 sec., or 6 sec. with UP or DOWN key.

Press UP or DOWN key.

20

21

Present status

Press SET key.

Press UP or DOWN key.

18

Remarks

Select NON (none), 1 sec., 3 sec., or 6 sec. with UP or DOWN key.

Press UP or DOWN key.

16

17

MEAS 2 (Parameter Status)

Press UP or DOWN key.

14

15

MEAS 1 (Parameter)

Specify CH2 OK (input abnormal) alarm delay time. Select NON (none) with UP or DOWN key.

Present status

Press SET key.

To set OK alarm delay time, select NON (none).

-37-

Specify CH1 DANGER alarm relay mode.

7.

PARAMETER SETTING

VM-5U

LCD display Procedure

Key operation

SET

SET

31

SET

SET

35

36

•

Present status

Press SET key.

SET

Specify CH1 ALERT alarm relay mode. Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Present status

Press SET key.

Specify CH2 ALERT alarm relay mode. Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Present status

Press SET key.

Specify CH1 OK (input abnormal) alarm relay mode. Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Press UP or DOWN key.

34

Specify CH2 DANGER alarm relay mode. Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Press UP or DOWN key.

32

33

Present status

Press SET key.

Press UP or DOWN key.

30

Remarks

Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Press UP or DOWN key.

28

29

MEAS 2 (Parameter Status)

Press UP or DOWN key.

26

27

MEAS 1 (Parameter)

Present status

Press SET key.

Specify CH2 OK (input abnormal) alarm relay mode. Select ENERGIZED or DE-ENERGIZED with UP or DOWN key.

Press UP or DOWN key.

Procedures 35 and 36 are displayed only when using the monitor in combination with the VM-5Y3,4,5,6 Relay Module Unit.

-38-

7.

PARAMETER SETTING

VM-5U

LCD display Procedure

37

Key operation

SET

SET

SET

•

SET

Remarks

Specify first-out display. Select ON (enable) or OFF (disable) with UP or DOWN key.

Present status

Press SET key.

Specify timed OK channel defeat. Select ON (enable) or OFF (disable) with UP or DOWN key.

Present status

Press SET key.

• Specify address. Select address between 1 and 10 with UP or DOWN key.

Press UP or DOWN key.

42

43

Present status

Press SET key.

Press UP or DOWN key.

40

41

MEAS 2 (Parameter Status)

Press UP or DOWN key.

38

39

MEAS 1 (Parameter)

Present status

Press SET key.

Return to procedure 1.

Make sure to assign a unique address for use with the VM-5P1,2 Communication/ Phase Marker unit and VM-5H3 or VM-5W1 Instrument rack or VM-53 Dual

Mandatory

Communication Unit. Same address number is not allowed in the same rack. •

The display is reset to normal approx. 60 sec. after setting is completed.

-39-

7.

PARAMETER SETTING

VM-5U

7-5 PARAMETER SETTING 2 7-5-1 PARAMETER SETTING 2 •

This chapter describes how to change the DANGER and ALERT alarm set values and adjust measured value and recorder output zero span.

•

For adjustment of measured value and recorder output zero span refer to page 51 "MAINTENANCE".

7-5-2 MODE SELECT SWITCH SETTING OFF ON 1

1) 1BY(CH1 BYPASS) S.W.

2

2) 2BY(CH2 BYPASS) S.W.

3

3) DBY(DANGER BYPASS) S.W.

4

4) MS1(MODE-SELECT1) S.W. (normally OFF)

5

5) MS2(MODE-SELECT2) S.W.

6

6) N·A(not available)

DIP switches Confirm that the MS1 (MODE-SELECT1) switch is "OFF". Place the MS2 (MODE-SELECT2) switch in "OFF" position. •

Setting other than the above are not enabled to set the parameters.

-40-

7.

PARAMETER SETTING

VM-5U

7-5-3 DISPLAY HIERARCHY The flow chart shows the hierarchy of the PARAMETER SETTING 2 display.

PARAMETER SETTING 2

5

CH1 DANGER alarm Set range : 0 to 110% of monitor range or ineffective

CH2 DANGER alarm Set range : 0 to 110% of monitor range or ineffective

CH1 ALERT alarm Set range : 0 to 110% of monitor range or ineffective

CH2 ALERT alarm Set range : 0 to 110% of monitor range or ineffective

Calibrate measured value

YES

NO

4

3

Refer to Maintenance for more detail.

-41-

7.

PARAMETER SETTING

VM-5U

4

3

CH1 measured value display

CH1 20% measured value check

CH2 measured value display

CH2 20% measured value check

CH1 100% measured value check

CH2 100% measured value check

CH1 measured value span adjustment Adjustment range : ±5% of monitor range

CH2 measured value span adjustment Adjustment range : ±5% of monitor range

CH1 recorder output zero adjustment Adjustment range : ±5% of monitor range

CH2 recorder output zero adjustment Adjustment range : ±5% of monitor range

CH1 recorder output span adjustment Adjustment range : ±5% of monitor range

CH2 recorder output span adjustment Adjustment range : ±5% of monitor range

Suppression set Adjustment range : 0 to 10% of monitor range

5

-42-

7.

PARAMETER SETTING

VM-5U

7-5-4 DISPLAY CONTENT The characters and numerals indicated on the LCD display when setting the parameters represent the following parameters and their status. MEAS 1····Displays the parameters that can be set.

MEAS 1

Display

Parameter CH1 DANGER alarm set

MEAS1

CH2 DANGER alarm set %

CH1 ALERT alarm set

MEAS2 %

CH2 ALERT alarm set

□□□MEAS2

MEAS1

100 %

100 %

CH1 20% measured value check CH2 20% measured value check

80

80

CH1 100% measured value check CH2 100% measured value check 60

60

CH1 measured value span adjustment CH2 measured value span adjustment

40

40

CH1 recorder output zero adjustment CH2 recorder output zero adjustment

20

20

CH1 recorder output span adjustment CH2 recorder output span adjustment

0

Suppression set

0

LCD display

-43-

7.

PARAMETER SETTING

VM-5U

MEAS 2 .... Displays the status of each parameter.

Display

MEAS 2

Parameter status Disable

MEAS1

Error %

MEAS2 %

□□□MEAS2

MEAS1

100 %

100 %

80

80

60

60

40

40

20

20

0

0

LCD display

•

The limit value specified for DANGER alarm must be higher than that for ALERT alarm.

-44-

7.

PARAMETER SETTING

VM-5U

7-5-5 KEY OPERATIONS The chart below describes the key operations for PARAMETER SETTING 2. •

The display is reset to normal if there is no key operation for approx. 60 sec. LCD display

Procedure

1

2

3

Key operation

SET CHK

SET CHK

4

5

SET CHK

6

7

SET CHK

8

MEAS 1 (Parameter)

MEAS 2 (Parameter Status)

Remarks

Specify CH1 DANGER alarm.

Press SET key more than 5 sec.

Present status

Press CHECK and UP or DOWN key.

0 to 110% of Fix digit with CHECK key monitor range and specify value with UP or DOWN key. Disabled

Press SET key.

Present status

Press CHECK and UP or DOWN key.

0 to 110% of Fix digit with CHECK key monitor range and specify value with UP or DOWN key. Disabled

Press SET key.

Present status Specify CH1 ALERT alarm.

Press CHECK and UP or DOWN key.

0 to 110% of Fix digit with CHECK key monitor range and specify value with UP or DOWN key. Disabled

Press SET key.

Present status Specify CH2 ALERT alarm.

Press CHECK

0 to 110% of

and UP or DOWN key.

monitor range and specify value with UP or DOWN key. Disabled

Specify CH2 DANGER alarm.

Fix digit with CHECK key

Measured value calibration not carried out (after procedure 10, moves on to procedure 17) 9

SET

Press SET key.

10

SET

Press SET key.

Present measured value Present measured value

-45-

CH1 measured value display. CH2 measured value display.

7.

PARAMETER SETTING

VM-5U

Measured value check not carried out (after procedure 16, display moves on to procedure 17) LCD display Procedure

Key operation

9

SET

Press SET key.

10

CHK

Press CHECK key.

11

---

12

CHK

13

---

14

CHK

15

---

16

CHK

Press CHECK key.

17

SET

Press SET key.

CHK 18

19

20

21

SET CHK

SET

MEAS 1 (Parameter)

-------------Press CHECK key. -------------Press CHECK key. --------------

MEAS 2 (Parameter Status)

Remarks

Present measured value Present measured value Present measured value Present measured value Present measured value Present measured value Present measured value Present measured value

Specify CH1 20% measured value check.

Present measured value

Check with CHECK key. Specify CH2 20% measured value check. Check with CHECK key. Specify CH1 100% measured value check. Check with CHECK key. Specify CH2 100% measured value check. Check with CHECK key.

Specify CH1 measured value span adjustment.

Set gain with CHECK key ±5% of and adjust recorder output monitor range with UP or DOWN key.

Press CHECK and UP or DOWN key.

Present measured value

Press SET key.

Specify CH2 measured value span adjustment.

Set gain with CHECK key ±5% of and adjust recorder output monitor range with UP or DOWN key.

Press CHECK and UP or DOWN key.

Present measured value

Press SET key.

-46-

Specify CH1 recorder output zero adjustment.

7.

PARAMETER SETTING

VM-5U

LCD display Procedure

Key operation

CHK 22

23

SET CHK

24

25

26

27

28 29

SET CHK

SET CHK

SET

30 31

•

SET

MEAS 1 (Parameter)

MEAS 2 (Parameter Status)

Remarks

Press CHECK and UP or DOWN key.

Present measured value

Set gain with CHECK key and adjust recorder output with UP or DOWN key.

Press SET key.

Present measured value

Specify CH2 recorder output zero adjustment.

Press CHECK and UP or DOWN key.

Present measured value

Set gain with CHECK key and adjust recorder output with UP or DOWN key.

Press SET key.

Present measured value

Specify CH1 recorder output span adjustment.

Press CHECK and UP or DOWN key.

Present measured value

Set gain with CHECK key and adjust recorder output with UP or DOWN key.

Press SET key.

Present measured value

Specify CH2 recorder output span adjustment.

Press CHECK and UP or DOWN key.

Present measured value

Set gain with CHECK key and adjust recorder output with UP or DOWN key.

Press SET key.

Present status Specify suppression set value.

Press UP and DOWN key.

0 to 10% of monitor range

Press SET key.

Present status Return to procedure 1.

Specify value with UP or DOWN key.

The display is reset to normal if there is no key operation for approx. 60 sec.

-47-

8.

FUNCTIONAL DIAGRAM

VM-5U

8-1 BLOCK DIAGRAM

-48-

8.

FUNCTIONAL DIAGRAM

VM-5U

8-2 FUNCTIONAL BLOCK DIAGRAM 1

Input amplifier Buffer amplifier for input signals.

2

LPF Cuts off the high frequency range.

3

HPF (Enabled for VM-5K, 5U, 5B and 5M) Cuts off the low frequency range.

4

Integrator (Enabled for VM-5U, 5B and 5M) Integrates the input signal to convert acceleration to velocity or velocity to displacement.

5

Output amplifier Buffer amplifier for monitor output from the BNC connector on the monitor front panel and to the terminal block on the rear panel (VM-5G Single Unit Instrument Rack, VM-5Y Relay Module Unit).

6

Integrator (Enabled for VM-5T, 5D, 5N, 5E, 5A, 5L, 5J and 5C) Integrates the PWM (pulse width modulation) signal, and converts it to a DC voltage proportional to the measured value.

7

Zero shift (Enabled for VM-5T, 5D, 5N, 5E, 5A, 5L and 5J. For VM-5C, only enabled on CH2.) The input signal is zero-shifted by the DC voltage output from the integrator.

8

Programmable Gain Amplifier Converts the input signal to the voltage level required by the detection circuit.

9

Detection circuit (Enabled for VM-5K, 5U, 5B and 5M) Detects the input signal, and converts it to a DC voltage proportional to the vibration. • P-P detection

Peak-to-peak detection

• AVE detection

Average value detection

• RMS detection (option)

Effective value detection

-49-

8.

FUNCTIONAL DIAGRAM

VM-5U

10 Level adjustment Converts the DC input voltage to the level required by the A/D converter. 11 A/D 10-bit A/D converter for conversion of analog to digital signals. 12 Counter (Enabled for VM-5C, 5 S, and 5R) Counts the pulse input from the trigger card. 13 CPU 16-bit CPU used. 14 PWM Performs pulse width modulation in proportion to the measured value. 15 SIO Handles internal communication with the VM-5P1,2 Communication/Phase Marker Unit. 16 PIO Inputs signals for key operations and remote contact input, and outputs signals for driving the LCD cards and alarm relays. 17 Integrator Integrates the PWM (pulse width modulation) signal, and converts it to a DC voltage proportional to the measured value. 18 Output amplifier Converts the output to the 1 to 5VDC or 4 to 20mA signal required for the recorder, etc. 19 Filter card (option) Available as option, if a still sharper filter performance is required. 20 Trigger card (Enabled for VM-5C, 5 S, and 5R) Converts the input signal to the pulse waveform. 21 Isolated output card, voltage conversion card (option) (0 to -10VDC, 0 to +10VDC, 0 to -5VDC, 0 to +5VDC) •

Isolated output card : This isolated output card is used for isolation from other circuits.

•

Recorder option output card : A recorder option output card for applications where an other than standard recorder output is required.

-50-

9.

MAINTENANCE

VM-5U

9-1 RECOMMENDED MAINTENANCE EQUIPMENT The recommended maintenance equipments listed below should be used to perform the procedures in this manual. •

Digital Multimeter (DMM) Agilent Technologies 3466A or equivalent

•

DC voltage generator Yokogawa Electric Corporation 2554 or equivalent

•

Function generator Yokogawa FG-120 or equivalent

•

Tester

•

For alarm output wiring proceed as described in the instruction manuals for the VM-5G Single Unit Instrument Rack and VM-5Y Relay Module Unit used in

Mandatory

combination with this monitor unit. • Warning

Make sure to turn the power off before wiring work to prevent accidents due to electric shock.

-51-

9.

MAINTENANCE

VM-5U

9-2 VERIFICATION OF OK (INPUT ABNORMAL ALARM) OPERATION This clause is used to test the display of OK (INPUT ABNORMAL ALARM) and contact output. •

Since OK (INPUT ABNORMAL ALARM) will be output during the test, open the circuit between the alarm contacts and the connected system if necessary.

Mandatory

•

Set each Alarm Bypass Switch to “OFF” position.

•

The machine is not protected during operation test.

•

To verify OK ALARM contact operation on one channel, none of the other channels

Warning

must be in alarm output condition, except when using the VM-5Y3,4,5,6 Relay Module Unit. 9-2-1 INTERCONNECTION (ex. VM-5G SINGLE UNIT INSTRUMENT RACK) Connect a CV Series Velocity Transducer to the input terminal of the VM-5G Single Unit Instrument Rack and check the circuit of OK ALARM contact points. •

Connect to the input/output terminals of the channel under operation test.

•

Refer to “4. INTERCONNECTION” on page 4.

IN COM.

CV Series Velocity Transducer

NC OK NO

A1 B1 IN IN A2 B2 COM COM A3 B3 PWR PWR A4 B4 REC REC A5 B5 REC- REC A6 B6 BUF BUF A7 B7 COM COM B8 A8 NC NC B9 A9 DAN DAN B10 A10 NO NO B11 A11 NC NC B12 A12 ALE ALE B13 A13 NO NO B14 A14 SEQ NC B15 A15 COM OK B16 A16 P-S NO B17 A17 RES L1 B18 A18 COM L2 B19 A19 FLT FG

Tester

VM-5G Single Unit Instrument Rack Input/output terminal block

-52-

9.

MAINTENANCE

VM-5U

9-2-2 VERIFICATION OF OPERATION (1) Resetting OK (INPUT ABNORMAL ALARM) Release OK (INPUT ABNORMAL ALARM) by resetting the key more than 15 sec. after the CV Series Velocity Transducer was connected. (in self-holding alarm reset mode). In auto-reset mode, OK is reset automatically after approx. 15 sec. (2) VERIFICATION OF ALARM OPERATION Disconnect the signal transmission cable of the CV Series Velocity Transducer from the input/output terminal block. At the same time, verify operation by testing the OK alarm contact points for continuity. (3) ALARM RESET Reconnect the signal transmission cable of the CV Series Velocity Transducer. Release OK (INPUT ABNORMAL ALARM) by resetting the key more than 15 sec. after the transmission cable was connected (in self-holding alarm reset mode). In auto-reset mode, OK is reset automatically after approx. 15 sec.

-53-

9.

MAINTENANCE

VM-5U

9-3 VERIFICATION OF DANGER (DAN)/ALERT (ALE) ALARM OPERATION This clause is used to test the display and contact output of DANGER (DAN)/ALERT (ALE) alarm. • Mandatory

• •

Warning

Since DANGER (DAN)/ALERT (ALE) alarm will be output during the test, open the circuit between the alarm contacts and the connected system if necessary. Set each Bypass Switch to “OFF” position. When mounting this monitor unit in VM-5H3 or VM-5W1 Instrument Rack, set the DANGER Bypass switch to “DISABL” position.

•

The machine is not protected during operation test.

•

DANGER (DAN)/ALERT (ALE) alarm operates after the specified alarm delay time has elapsed.

9-3-1 INTERCONNECTION (ex. VM-5G SINGLE UNIT INSTRUMENT RACK) Connect a DC voltage generator and a function generator to the input/output terminals of the VM-5G Single Unit Instrument Rack and test for connection between the DANGER (DAN) / ALERT (ALE) alarm output terminals. • •

Connect to the input/output terminals of the channel under operation test. Refer to “4. INTERCONNECTION” on page 4.

IN COM. DC voltage generator

NC DAN NO

Function generator

NC ALE NO

Tester

A1 B1 IN IN A2 B2 COM COM A3 B3 PWR PWR A4 B4 REC REC A5 B5 REC- REC A6 B6 BUF BUF A7 B7 COM COM B8 A8 NC NC B9 A9 DAN DAN B10 A10 NO NO B11 A11 NC NC B12 A12 ALE ALE B13 A13 NO NO B14 A14 SEQ NC B15 A15 COM OK B16 A16 P-S NO B17 A17 RES L1 B18 A18 COM L2 B19 A19 FLT FG

Tester

VM-5G Single Unit instrument Rack Input/output terminal block

-54-

9.

MAINTENANCE

VM-5U

9-3-2 VERIFICATION OF OPERATION (1) Input of Reference Voltage and Reference Sine Wave The reference sine wave voltage varies with on the input range of the transducer and the measurement range. Please refer to the reference sine wave voltage and frequency indicated on the monitor name plate attached LCD cover. Reference Voltage and Reference Sine Wave Input Voltage Model Code No.

□1 VM-5U-□2 VM-5U-□3 VM-5U-

Reference Sine Wave Voltage

Reference Voltage

Reference Sine Wave Frequency*

At 100% input

At 0% input

(VDC)

(mVrms)

(mVrms)

(Hz)

0±0.5

Shown on name plate

0.0

30±5

12±1

Shown on name plate

0.0

50±5

0±0.5

Shown on name plate

0.0

100±5

Input accuracy ±0.1% of F.S. * Set the reference sine wave frequency to within ±5% for velocity measurement range, and to whithin ±0.1% for displacement measurment range. (2) Resetting OK (input abnormal alarm) Input the reference voltage from the DC voltage generator. (The corresponding reference sine wave voltage is 0.0mVrms.) Reset more than 15 sec. after input of the reference voltage to release OK (INPUT ABNORMAL ALARM) (in self-holding alarm reset mode). In auto-reset mode, OK is reset automatically after approx. 15 sec. (3) Verification of Alarm Operation Gradually increase the voltage input from the function generator. Verify that ALERT (ALE) alarm is output after elapse of the preset alarm delay time, when the input value exceeds the ALERT (ALE) alarm set value. At the same time, verify operation by testing the ALERT (ALE) alarm contact points for connection with a tester. Continue to increase the input voltage. Verify that DANGER (DAN) alarm is output after elapse of the preset alarm delay time, when the input exceeds the DANGER (DAN) alarm set value. At the same time, verify operation by testing the DANGER (DAN) alarm contact points for connection with a tester. (4) Alarm Reset Once the DANGER (DAN) alarm limit value has been exceeded, gradually decrease the reference sine wave input voltage.

When the input voltage is below the DANGER (DAN)

alarm set value, reset to verify that ALERT (ALE) alarm output is released (in self-holding alarm reset mode). In auto-reset mode, the alarm is reset automatically. Continue to decrease the input voltage. When the input voltage is below the ALERT (ALE) alarm set value, reset to verify that ALERT (ALE) alarm is released (in self-holding alarm reset mode). In auto-reset mode, the alarm is reset automatically.

-55-

9.

MAINTENANCE

VM-5U

9-4 VERIFICATION OF MEASURED VALUE AND RECORDER OUTPUT This clause is used to test the measured value and recorder output. • Mandatory

Since DANGER(DAN)/ALERT(ALE)/OK alarm will be output during the test, open the circuit between the DANGER(DAN)/ALERT(ALE)/OK alarm contacts and the connected system if necessary.

•

Bypass DANGER alarm output by setting the DANGER Bypass Switch to "ON" position.

•

When mounting this monitor unit in the VM-5H3 or VM-5W1 Instrument Rack, set the DANGER Bypass switch to “ENBL” position.

• Warning

The machine is not protected during operation test.

9-4-1 INTERCONNECTION (ex. VM-5G SINGLE UNIT INSTRUMENT RACK)

Connect a DC voltage generator and a function generator to the input/output terminals of the VM-5G Single Unit Instrument Rack and measure the recorder output with a DMM. •

Connect to the input/output terminals of the channel under operation test.

•

Refer to “4. INTERCONNECTION” on page 4.

IN COM. REC+

DC voltage generator

REC-

Function generator

DMM

A1 B1 IN IN A2 B2 COM COM A3 B3 PWR PWR A4 B4 REC REC A5 B5 REC- REC A6 B6 BUF BUF A7 B7 COM COM B8 A8 NC NC B9 A9 DAN DAN B10 A10 NO NO B11 A11 NC NC B12 A12 ALE ALE B13 A13 NO NO B14 A14 SEQ NC B15 A15 COM OK B16 A16 P-S NO B17 A17 RES L1 B18 A18 COM L2 B19 A19 FLT FG

VM-5G Single Unit Instrument Rack Input/output terminal block

-56-

9.

MAINTENANCE

VM-5U

9-4-2 VERIFICATION OF OPERATION (1) Input of Reference Voltage and Reference Sine Wave Refer to "9-3-2 (1) Input of Reference Voltage and Reference Sine Wave" on page 55. (2) Resetting OK (input abnormal alarm) Refer to "9-3-2 (2) Resetting OK (input abnormal alarm)" on page 55. (3) Verification of Measured Value Read the measured value on the LCD display, and verify that it agrees with the input value from the function generator and lies within the tolerance range. (4) Verification of Recorder Output Measure the recorder output with a DMM, and verify that it agrees with the input value from the function generator and lies within the tolerance range.

-57-

9.

MAINTENANCE

VM-5U

9-5 ADJUSTMENT OF MEASURED VALUE AND RECORDER OUTPUT ZERO SPAN This clause is used to adjust the measured value and recorder output. •

Since DANGER(DAN)/ALERT(ALE)/OK alarm will be output during the test, open the circuit between the DANGER(DAN)/ALERT(ALE)/OK alarm contacts and the

Mandatory

connected system if necessary. •

Bypass DANGER alarm output by setting the DANGER Bypass Switch to "ON" position.

•

When mounting this monitor unit in the VM-5H3 or VM-5W1 Instrument Rack, set the DANGER Bypass switch to “ENBL” position.

• Warning

The machine is not protected during operation test.

9-5-1 INTERCONNECTION (ex. VM-5G SINGLE UNIT INSTRUMENT RACK)

Connect a DC voltage generator and a function generator to the input terminal of the VM-5G Single Unit Instrument Rack and measure the recorder output with a DMM. •

Connect to the input/output terminals of the channel being adjusted.

•

Refer to “4. INTERCONNECTION” on page 4.

IN COM. REC+

DC voltage generator

REC-

Function generator

DMM

A1 B1 IN IN A2 B2 COM COM A3 B3 PWR PWR A4 B4 REC REC A5 B5 REC- REC A6 B6 BUF BUF A7 B7 COM COM B8 A8 NC NC B9 A9 DAN DAN B10 A10 NO NO B11 A11 NC NC B12 A12 ALE ALE B13 A13 NO NO B14 A14 SEQ NC B15 A15 COM OK B16 A16 P-S NO B17 A17 RES L1 B18 A18 COM L2 B19 A19 FLT FG

VM-5G Single Unit Instrument Rack Input/output terminal block

-58-

9.

MAINTENANCE

VM-5U

9-5-2 ADJUSTMENT (1) Input of Reference Voltage and Reference Sine Wave Refer to "9-3-2 (1) Input of Reference Voltage and Reference Sine Wave" on page 55. (2) Resetting OK (input abnormal alarm) Refer to "9-3-2 (2) Resetting OK (input abnormal alarm)" on page 55. (3) Measured value check Display 20% MEASURED VALUE CHECK referring to page 40 "7-5 PARAMETER SETTING 2", and make the reference sine wave input voltage from the function generator 20%. Then press the CHECK key. Next display 100% MEASURED VALUE CHECK, and make the reference sine wave input voltage from the function generator 100%. Then press the CHECK key. •

If error is displayed, verify the input voltage value.

(4) Measured value span adjustment Display MEASURED VALUE SPAN ADJUSTMENT referring to page 40 "7-5 PARAMETER SETTING 2", and make the reference sine wave input voltage from the function generator 100%. Then use the UP, DOWN and CHECK keys to adjust the MEAS 2 display to 100% of the meter scale. Finalize the adjustment by pressing the SET key.

Adjustable range is ±5% of monitor range.

(5) Recorder output zero adjustment Display RECORDER OUTPUT ZERO ADJUSTMENT referring to page 40 "7-5 PARAMETER SETTING 2", and make the reference sine wave input voltage from the function generator 0%.

Then use the UP, DOWN and CHECK keys to adjust the recorder

output measured with the DMM to 0% of output value. Finalize the adjustment by pressing the SET key. •

Adjustable range is ±5% of monitor range.

0% output is 1V if the recorder output specifications is 1 to 5VDC, or 4mA if it is 4 to 20mADC.

•

MEAS 2 indicates the measured value.

(6) Recorder output span adjustment Display RECORDER OUTPUT SPAN ADJUSTMENT referring to page 40 "7-5 PARAMETER SETTING 2", and make the reference sine wave input voltage from the function generator 100%. Then use the UP, DOWN and CHECK keys to adjust the recorder output measured with the DMM to 100% of output value. Finalize the adjustment by pressing the SET key. •

100% output is 5V if the recorder output specifications is 1 to 5VDC, or 20mA if it is 4 to 20mADC.

•

Adjustablet range is ±5% of monitor range.

MEAS 2 indicates the measured value. -59-

9.

MAINTENANCE

VM-5U

9-6 REPLACEMENT OF ALUMINUM ELECTROLYTIC CAPACITOR •

Aluminum electrolytic capacitors are used on the main board, which have a limited life. Their service life varies according to the conditions of use, but for preventive maintenance it is recommended to check the capacitors listed below in 5-year cycles for characteristic deterioration and replace them as necessary. Replacement by SST is recommended. Component

Aluminum electrolytic capacitor C206, C207, C208

• Mandatory

Type

Manufacturer

UPJ1E101M

Nichicon

Q’ty 3

To remove or install the monitor, proceed according to the instruction manual of the instrument rack. Failure to turn off the power before pulling the monitor unit out of, or inserting it into the rack will result in serious damage and accidents.

-60-

9.

MAINTENANCE

VM-5U

9-7 REPLACEMENT OF LCD UNIT •

An LCD unit is used on the face plate, which have a limited life. Their service life varies according to the conditions of use, but for preventive maintenance it is recommended to check the LCD listed below in 5-year cycles for characteristic deterioration and replace them as necessary. Replacement by SST is recommended. Component

Type

LCD unit with Acrylic cover

Q’ty

SHINKAWA Sensor Technology, Inc.

1

•

To remove or install the monitor, proceed according to the instruction manual of the instrument rack. Failure to turn off the power before pulling the monitor unit out of, or inserting it into the rack will result in serious damage and accidents.

•

Do not touch the main board and LCD unit board with bare hands.

Caution

Prohibition

1902BHS

Manufacturer

1 Pull out the monitor unit. 2 Disconnect the connector of the flat cable connecting the LCD unit to the main board. Unlock two locks at the top and bottom of the connector.

Lock Connector Lock

Main board (soldered side) Monitor unit

3 Take out three screws fixing the LCD unit to the face plate. The acrylic covers and sleeves will come off at the same time.

LCD unit

Acrylic cover

Sleeve Main board (soldered side) Monitor unit

4 Replace the LCD unit by reversing the above sequence. •

Confirm that connector is connected firmly.

Caution

-61-

9.

MAINTENANCE

VM-5U

9-8 LCD CONTRAST ADJUSTMENT •

The LCD contrast volume is located on the back of the face plate (LCD Unit). Pull out the face plate referring to “7. PARAMETER SETTING” on page 27.

Mandatory

•

Do not touch the main board and LCD unit board with bare hands.

Prohibition

Use a small flat blade screwdriver to set the LCD contrast volume (VR1) on the LCD unit to the desired contrast level.

VR 1

Flat blade screwdriver

Back of face plate

•

LCD Unit

Be noted that the characteristic of LCD contrast adjustment is as follows.

Contrast

1 turn

-62-

9.

MAINTENANCE

VM-5U

9-9 LCD BACKLIGHT ADJUSTMENT •

The LCD backlight volume is located on the back of the face plate (LCD Unit). Pull out the face plate referring to “7. PARAMETER SETTING” on page 27.

Mandatory

•

Do not touch the main board and LCD unit board with bare hands.

Prohibition

Use a small flat blade screwdriver to set the LCD backlight volume (VR2) on the LCD unit to the

VR 2

Flat blade screwdriver

LCD Unit

Back of face plate

-63-

VR 1

desired brightness level.

10.

TROUBLESHOOTING

VM-5U

10-1 LCD DISPLAY CONTENT ABNORMAL

Start Display is abnormal. Display is blank.

Is power supply on?

NO

Turn on power supply.

NO

Connect correctly.

NO

Insert Main board firmly by pushing Main board frame.

NO

Insert LCD connector firmly.

NO

Perform LCD contrast adjustment.

YES Are connections to power supply terminals correct? YES Turn on power supply again.

Is Main board inserted firmly to the rack? YES

Is LCD connector inserted firmly? YES

Is display normal?

YES OK

Is display normal?

YES OK

-64-

NO

Repair VM-5.

10.

TROUBLESHOOTING 10-2

VM-5U

OK DISPLAY FLASHES Start

Wait approx.15 sec., then reset key.

Did flashing stop?

YES

OK

YES

Insert Main board firmly by pushing Main board frame.

NO

Is Main board inserted firmly to the rack? NO Run self-diagnosis (press CHK key).

Diagnostic findings OK? YES

NO

Cable breakage. (CV-85,CV-87 input specifications)

Display

Input Abnormal. (CV-86 input specifications)

Cable short,breakage

Display

(CV-86 input specifications)

Repair VM-5.

Input is outside input range of built-in A/D converter (H or 5V end).

Display

-65-

Check input voltage of monitor.

10.

TROUBLESHOOTING

VM-5U

10-3 MEASURED VALUE ABNORMAL

Start

Is Main board inserted firmly to the rack?

NO

Insert Main board firmly by pushing Main board frame.

YES

Check transducer characteristic.

Repair VM-5.

-66-

10.

TROUBLESHOOTING

VM-5U

10-4 OK (INPUT ABNORMAL ALARM) DOES NOT OPERATE

Start

Is channel bypass in operation?

NO

YES Repair VM-5.

Release channel bypass.

10-5 ALERT (ALE) ALARM DOES NOT OPERATE

Start

Is sequence circuit in operation?

NO

YES Release sequence circuit.

Is alarm limit value set within measurement range?

NO

Set within measurement range.

YES

Is channel bypass in operation?

NO

YES Release channel bypass.

-67-

Repair VM-5.

10.

TROUBLESHOOTING

VM-5U

10-6 DANGER (DAN) ALARM DOES NOT OPERATE Start

Is sequence circuit in peration?

NO

YES Release sequence circuit.

Is alarm limit value set within measurement range?

NO

Set within measurement range.

YES

Is DANGER bypass in operation?

NO

YES Release DANGER bypass. YES

Is channel bypass in operation?

NO

YES DANGER alarm in operation?

Release channel bypass.

Repair VM-5.

YES OK

10-7 ERRONEOUS OPERATION OF DANGER (DAN) / ALERT (ALE) ALARM Start

Erroneous operation due to noise.

Noise countermeasures.

Increase alarm delay time.

-68-

10.

TROUBLESHOOTING

VM-5U

10-8 NO RECORDER OUTPUT Start

Are output terminals connected correctly?

NO

Connect correctly.

YES Repair VM-5.

-69-

Warranty

The warranty period for the delivered product shall be 3 years from the date of delivery from our factory. But the warranty period for the special order product and software shall be 1 year, and for the repairing parts shall be 6 months. In the event that the delivered product develops any defects within the warranty period for which Shinkawa Electric is liable, the defective part will be replaced or repaired in our factory at our own expense. In the event that an engineer needs to be dispatched for repair purposes during the warranty period, travel expenses for the said engineer will be changed in accordance with the above item. The cost of repair will be borne by Shinkawa Electric. However, the following are excluded from our warranty: (1) Any defects due to improper handling or operation by the user. (2) Any defects, the case of which is not attributable to Shinkawa Electric. (3) Any modifications or repairs made by others then Shinkawa Electric or persons commissioned by Shinkawa Electric. (4) Any handling, storage and operation under severe environmental conditions that exceed the design specifications. (5) Any defects due to fire, flood, earthquake, lightning and other Acts of God. (6) The consumables (7) Other defects considered not to be attributable to Shinkawa Electric. This warranty applies exclusively to the delivered product units. Shinkawa Electric will not be held liable for consequential damage caused either directly or indirectly through a defect of the delivered product. The warranty period and scope of machinery and equipment made by manufacturers other than Shinkawa Electric shall be in accordance with the conditions of the respective manufacturer, regardless of the provisions made above.

Hiroshima Factory 4-22 Yoshikawa-kogyodanchi, Higashi-hiroshima 739-0153, Japan Tel. +81-82-429-1118 Fax. +81-82-429-0804 [Field support & Repair Dept] E-Mail : [email protected]