Type:VID29-XX/XXP Revision:1 Page 1 of 10
VID29 Series Stepper Motor DESCRIPTION VID29-XX and VID29-XXP series is a precise stepping motor of patent design, with gear reduction ratio 180/1, mainly used in dashboard instrumentation or other digital indicator equipments, to transfer digital signals directly and accurately to analog display output. Driven by 2 sequent logic pulse signals in 5V-10V, the output shaft can reach stepping angle resolution 1/12°. The angular speed can reach more than 500Hz. The new and modern design makes high efficiency, high position accuracy and extremely robust gear system. The special gear shape is helpful to decrease friction and noise. It chooses special material for each component to increase liability and safety for the motor.
FEATURES - Wide working voltage: 5~10V. - Low current consumption: less than20mA, 5V, 2X100mW. - Wide working temperature: -40~105℃. - Extremely robust construction: Ф30mm X 7.6mm. - High μ-step resolution: 1/12°. - Directly driven by a μ-controller.
TYPICAL APPLICATION
20
CPU
10
30
0
signals
motor driving circuit
display perfect combination of digital accuracy and analog facility
© 2006 Data Instrumentation Technology Limited. Email:
[email protected] | Website: www.vid.wellgain.com
Type:VID29-XX/XXP Revision:1 Page 2 of 10
STEP DEFINITION AND ROTOR MOVEMENT VID29-XX and VID29-XXP series motor are driven by 2 sequent logic pulse singnals. Its work diagram is as following: Pulse sequence
1
2
3
4
5
6
1
2
3
4
5
+5V UL
0 -5V
+5V UR
0
-5V
Partial Step
Full Step One cycle micro 15。 。
60
Gear ratio 1/180
Full 180。
P
ial art
1
4
2
3
UR
UL
Gears
Rotor
Motor Output
In order to make motor run more stable and decrease the noise, micro stepping technology is recommended. The micro pulse sequence which is more precise and near to sine wave, which could drive motor with 1/12º micro step of the pointer. The diagram is as following: Pulse sequence
1
2
3
4
5
6
1
2
3
4
5
+5V Voltage in coil
0 -5V
Full Step One cycle
Partial Step Micro Step
For more details about the micro stepping driving signals, please see specified files.
© 2006 Data Instrumentation Technology Limited. Email:
[email protected] | Website: www.vid.wellgain.com
Type:VID29-XX/XXP Revision:1 Page 3 of 10
ABSOLUTE MAXIMUM RATINGS Driving voltage (Ub)..............…………………………...........10V EMI tolerance (1 kHz;AM 80%; 100 kHz - 2 GHz) ....….......80 V/m Solder temperature (10 sec).........………………....... ....... ...260ºC
ELECTRICAL AND MECHANICAL CHARACTERISTICS Tamb=25ºC, In micro step mode @ Max. voltage 4.2V, unless other specified. Parameter
Symbol
Test Conditions
Min.
Typ.
Max
Units
105
ºC
280
300
Ω
15
20
mA
Electrical Characteristics Operating Temperature
Ta
-40
Coil Resistance
Rb
260
Operating Current
Im
fa=200Hz
Start-Stop Frequency
fss
JL=0.2x10-6kgm2
125
Hz
Maximum Driving Frequency
fmm
JL=0.2x10-6kgm2
600
Hz
Mechanical Characteristics Dynamic Torque
fa=400Hz
1.0 0.7
1.2 0.85
Ub=5V
3.5
4.0
mNm
4.225 E-7
Kgm2
M200 M400
fa=200Hz
Static Torque
Ms
Equivalent Motor Inertia @ Output
Jm
1.4 1.0
MNm mNm
Gear ratio
180 :1
Step size in full step mode
1
Degree
Step size in partial step mode
1/3
Degree
Step size in micro step mode
1/12
Degree
Backlash
0.5
1.0
Degree
Noise @ 100 °/sec
Noise Level
SPL
@ 200 °/sec @ 400 °/sec
34 41 44
dBA dBA dBA
Others Angle of Rotation
fl
Motors with internal
© 2006 Data Instrumentation Technology Limited. Email:
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315
Degree
Type:VID29-XX/XXP Revision:1 Page 4 of 10 Stop Force allowed on the pointer shaft: Axial force (push) Axial force (pull) Perpendicular force Imposed acceleration Note:
Fa Fa Fq αp
150 70 12 1000
fa – full-step frequency JL – Load inertia
TYPICAL TORQUE AND NOISE Torque
in micro step driving mode, @ Max voltage Ub= 4.2V Unit: Unm.
Noise in micro step driving mode, @ Max voltage Ub= 4.2V Unit: dB.
© 2006 Data Instrumentation Technology Limited. Email:
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N N N Rad/s2
Type:VID29-XX/XXP Revision:1 Page 5 of 10
PIN CONNECTION VID29-XX Pin Connection Schematic
Front Mount
Rear Mount
4
1
4
1
3
2
3
2
VID29-XXP Pin Connection Schematic
Front Mount
Rear Mount
1
4
1
4
2
3
2
3
SUGGESTED INSTALLATION The VID29 can be easily installed. The four contact pins can be soldered on PCB circuits. If the application is subject in very strong vibrations, screws might be necessary. Installation Diagram
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Type:VID29-XX/XXP Revision:1 Page 6 of 10
APPLICATION HINT The parameter of the pointer: Min
Typical
Size:
50mm
80mm
2.5g
10g
2 × 10−7 kgm 2
20 × 10−7 kgm 2
0.01mNm
0.025mNm
Weight: Inertia moment: Unbalance:
Suggested MaxValue(*)
DRIVING PULSE AND CONTROL CIRCUIT Partial-Step Driving Mode In partial-step driving mode, the motor can be directly driven by a standard logic voltage level with less than 20mA current consumption. The bit-time sequence determines the turning direction of the motor. The time sequence diagram is as following: Driving Pulse in Partial Mode
1
2
3
4
5
6
1
2
3
4
5
Clockwise (for VID29_xxP) Counterclockwise (for VID29_xx)
Bit Map 1 Contact 1
Counterclockwise (for VID29_xxP) Clockwise (for VID29_xx)
0 1
Contact 2,3
0 1
Contact 4
1
0
Pulse Sequence
4
UL
UR 3
2 VID29_xxP
Coil Voltage UL
0
4 Coil Voltage UR
0
1
UL
UR
3
2 VID29_xx
© 2006 Data Instrumentation Technology Limited. Email:
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Type:VID29-XX/XXP Revision:1 Page 7 of 10 Driving Diagram in Partial Mode VDD
UL
UR 2
1
4
3
GND
μ-Step Driving Mode In μ-step driving mode, the motor can be driven by a current-level sequence. A μ-step is a 0.083º of pointer. The driving pulses consist of many different current level pulse sequences. The μ-step provides the pointer shaft continuous, smooth movement. Example of driving Pulses in μ-step Mode
20
Drivering pulse for micro-step(Current amplitude=16.07mA) Step6
16.67
Step5 Step4
13.33
Step3
10 6.67
Step2 Step1
3.33 Pulse( i) Pulse( i+ 4)
0
1
2
3
4
5
6
7
8
9
10 11
12
13 14
15
16
17 18
-Step1
3.33
-Step2
6.67
-Step3
10
-Step4 -Step5
13.33 16.67
-Step6
20
Left Current in the left coil Right Current in the right coil
i
In general the peak amplitude should be between 12.9mA and 16.07mA. © 2006 Data Instrumentation Technology Limited. Email:
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19
20 21
22
23 24
Type:VID29-XX/XXP Revision:1 Page 8 of 10
1
Clockwise( VID29_××P) CounterClockwise(VID29_××)
4
UL
4 UL
CounterClockwise(VID29_××P) Clockwise(VID29_××)
UR
UR
3
3
2
1
2
VID29_××P
VID29_xx
ACCELERATION PROCESS In most of the VID29-XX applications, the angular range of the instrument dial is less than 300°. This allows to using mechanical stop to define the zero position. Generally the pointer will be reset to the zero position at each time power-up process.
In power-up process, to quickly drive the pointer onto his initial stop position without creating visible and audible jitter of the pointer, we suggest a frequency acceleration process to speed up VID29 step motor till a high speed. Below is an example:
speed of pointer deg/sec
speed of rotor deg/sec
Acceleration phase
100000 500 80000 400
Final speed
60000 300 40000 200 20000
Star-stop frequency
100
10
20
30
40
50
60 Time (ms) angle of pointer
5
10
15
20
25
30 angle of rotor
1000
3000
4000
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6000
Type:VID29-XX/XXP Revision:1 Page 9 of 10
RELIABILITY TEST Temperature Cycle Test -
Low Temperature: -40°C±2°C High Temperature: +105°C±2°C Dwell time: each for 1 Hrs Transfer Time: 1.5 hrs Cycle times: 50 cycles total 300hrs Cycle mode: see right graph.. Motor Status: running Reference standard: IEC60068-2-14.
Mechanical Vibration Test Thermal Shock Test -
Low Temperature: -40°C±2°C High Temperature: +105°C±2°C Dwell time: each for 0.5hrs Transfer Time: within 30s Cycle:100 Cycles total 100hrs Motor Status: non-running Reference standard: IEC60068-2-14.
-
Pulse shape: sine pulse form Range of frequency: 10Hz～ 200Hz(logarithm sweep)
-
Sweep cycle: 300 sec. Direction: X,Y axis Duration:8 hrs /each Direction Acceleration: 6 g Motor Status: running Reference standard: IEC60068-2-6
Humidity Test -
Temperature:+65°C±2°C Humidity:95±2％RH
-
Duration:144 Hrs Motor Status: non-running Reference standard: IEC68-2-3.
High Temperature Test -
Temperature: +105°C±2°C Duration:168 Hrs Motor Status: running Reference standard: IEC60068-2-2.
Mechanical Shocking Test Low Temperature Test -
Temperature: -40°C±2°C Duration: 48 Hrs Motor Status: running Reference standard: IEC68-2-1.
-
Height: 1.2 m Direction: X/Y Motor Status: non-running Reference standard: IEC68-2-62
© 2006 Data Instrumentation Technology Limited. Email:
[email protected] | Website: www.vid.wellgain.com
Type:VID29-XX/XXP Revision:1 Page 3 of 10
PACKING SKETCH MAP Tray for 100 stepper motors VID29 Material : PP Weight : Tray 1x210g=210g Motors 100x7g=700g Total = 910g
Stack for 1000 motors VID29: Material : 11Trays (including Cover) strappedtogether with plastic band Weight : Trays 10x910g=9100g Cover tray 1x210g=210g Plastic strap 2x15g=30g Total = 9340g
Master-carton for 1000 motors VID29: Material : cardboard 710g/m Weight : Master-carton 1x900g=900g PE bag 2x50g=100g Production 1x9340g=9340g PE 4x60g=240g Total 10580g
A cardboard of motors Plastic strap Total
10580g 2x15g=30g 10620g
© 2006 Data Instrumentation Technology Limited. Email:
[email protected] | Website: www.vid.wellgain.com
