AUCOM ELECTRONICS LTD
MULTISTART MOTOR CONTROL SYSTEM USER GUIDE
710-13896-00A
Multistart Motor Control System User Guide
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Contents System description
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Overview ............................................................................................................................................................. 3 Panel configurations ............................................................................................................................................. 3 Motor control methods
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Starting methods .................................................................................................................................................. 4 Stopping methods ................................................................................................................................................ 4 HMI touch-screen operation
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Main screen ......................................................................................................................................................... 5 PW-1 sub-screens ................................................................................................................................................ 6 Operation ........................................................................................................................................................ 6 MIMIC sub-screens .............................................................................................................................................. 6 Operation ........................................................................................................................................................ 7 PW-2 sub-screen ................................................................................................................................................. 7 Operation ........................................................................................................................................................ 7 M-1 to M-8 sub-screens ....................................................................................................................................... 7 PLC main components
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General information
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References
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System description M ULTISTART PANEL 3 (M SP3)
MC3
M ULTISTART PAN EL 2 (M SP2)
MU LTISTART PANEL 1 (MSP1)
F3
F2
F1
BP3
BP2
BP1
MP3
CT3
MC2
MP2
CT2
Q3
Q2
MC1
SOFT STARTER PANEL (SST)
HMI
QL
PLC
FL
LC
MP1
CT1
SST
Q1
OU TGOING MOTOR 3
OUTGOIN G M OTOR 2
M3
PLC/ TRANSITION PANEL (TP)
M2
OUTGOIN G M OTOR 1
INCOM IN G SUPPLY
M1
Single Line Diagram –typical multistart motor control system for 3 motor
Overview The multistart motor control system is a modular MV panel system, allowing selective control of up to 8 motors using one medium voltage soft starter. Master control is provided by a PLC using an HMI touchscreen interface for easy operation. Panel configurations A typical multistart motor control system comprises of the following panels: Panel type
ID Tag
Description
Soft starter panel
SST
This houses the medium voltage soft starter and its associated input/output switchgear
Transition/PLC panel
TP
This acts as a bus riser panel for the soft starter output bus and houses the PLC equipment and HMI touch-screen in a low voltage compartment
Multistart panel
MSP…
There is one multistart panel for each motor. The modular system allows for up to 8 motors to be used. The motor line and bypass switchgear can be contactors or circuit breakers. Control selection of these devices is configurable via the HMI. Each panel incorporates motor protection used during motor bypass operation
Incomer panel (optional)
IP
This panel is used for termination of the incoming supply cables. Switchgear equipment is specified by the customer
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Motor control methods Starting methods Each motor can be individually selected to SOFT START or DOL start. The start command sources from LOCAL (panel) or REMOTE (field) pushbuttons can be enabled or disabled. Each motor has its own selection screen on the HMI. These screens are referred to as M-1 to M-8. A motor SOFT START uses the following process: All isolators and earth switches are checked to make sure they are in the correct operational position (eg: QL and Q1 in ON position). The soft starter input switching device (eg: LC) is then closed The motor line switching device (eg: MC1) is closed and a soft start command is issued to the soft starter Once the soft starter has reached RUN mode and the motor is running at full speed, the motors bypass switching device (eg: BP1) is closed After a short time delay, a quick stop command is issued to the soft starter, then the motor line switching device (eg: MC1) is opened. The same process is used for soft starting each motor A motor DOL start uses the following process: The motor isolator/earth switch (eg: Q1) is checked to make sure it is in the ON position The motor bypass switching device (eg: BP1) is closed The same process is used for DOL starting each motor
Stopping methods All motors are globally selected to SOFT STOP or STOP (coast-to-stop) using the HMI screen PW_2. The stop command sources from LOCAL (panel) or REMOTE (field) pushbuttons can be enabled or disabled using the individual HMI motor screens M-1 to M-8. A motor SOFT STOP uses the following process: The motor will be running in DOL mode with the bypass switching device(eg: BP1) closed The soft starter input isolators and earth switches are checked to make sure they are in the correct operational position (eg: QL in ON position). The soft starter input switching device (eg: LC) is then closed
The motor line switching device (eg: MC1) is closed and a soft start command is issued to the soft starter Once the soft starter has reached RUN mode, the motors bypass switching device(eg: BP1) is opened After a short time delay, a stop command is issued to the soft starter A SOFT STOP is performed. At the end of the voltage ramp down period, the soft starter goes into READY mode. The motor line switching device(eg: MC1) is then opened The same process is used for soft starting each motor A motor STOP (coast-to-stop) uses the following process: The motor will be running in DOL mode with the bypass switching (eg: BP1) device closed The motor bypass switch (eg: BP1) is opened and a coast-to-stop is performed The same process is used for stopping each motor
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HMI touch-screen operation An HMI touch-screen is interfaced with the master PLC. The touch-screen provides the user with a wide variety of control choices and status information.
Main screen AuCom MULTI SOFT START/STOP
MIMIC
PW_2
M-3
M-2
M-1
13865.A
PW_1
Use the selection buttons to go to the following sub-screens. PW_1 Selects circuit breaker or contactor control for each individual switching device. This provides single or double command operation for each switching device via the PLC outputs MIMIC Provides single line representation of the system, showing status of all switchgear devices, motors and the soft starter PW_2 Selects between SOFT STOP or STOP (coast-to-stop) for a group of enabled motors M-1 to M-8 Each motor has its own screen, allowing start and stop command enable from LOCAL or REMOTE pushbuttons. Sub-screens M-4 to M-8 only available if a system has 5 or more motors
NOTE:
Sub-screens PW-1 and PW-2 are factory set and access is only available by authorised personnel, requiring a username and password. 5
PW-1 sub-screens These sub-screens allow selection between contactor control (C) or circuit breaker control (B) for each individual switching device, ie: soft starter input/output switches and motor line and bypass switches. The number of PW-1 sub-screens available depends on the number of motors used in the system. If there are 1 to 4 motors, only SW_M1_M4 sub-screen is available If there are 5 to 8 motors, SW_M5_M8 sub-screen is also available
C
B
B = Breaker C = Contactor
M-1
C
Line Contactor
M-2
B C
M-3
B C
M-4
B C
B Motor Contactor
C
B C
B C
B C
B
13870.A
Motor Bypass
Operation UP button scrolls back to main screen DOWN button scrolls to next available PW-1 sub-screen (ie: SW_M5_M8 if applicable) C/B button selects contactor or circuit breaker control for individual switching devices
NOTE:
Sub-screens PW-1are factory set and access is only available by authorised personnel, requiring a username and password.
MIMIC sub-screens These sub-screens provide single line diagram representation of the system, indicating status of all the switchgear devices, motors and soft starter. The number of MIMIC sub-screens available depends on the number of motors used and the switchgear configuration of the system.
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From MC3
Line 6 kV
From MC2
From MC1
Line 6 kV
LC
BP3
BP2
BP1
Q3
Q2
Q1
QL
SST FAULT
Soft Starter
MC2
MC3
M3 To M1
To M2
M3 FAULT
M2
M2 FAULT
M1
M1 FAULT
To M3
13867.A
MC3
Operation UP button scrolls back to main screen DOWN button scrolls to next available MIMIC sub-screen (ie: system dependent) PW-2 sub-screen This sub-screen allows selection between soft stop and coast-to-stop for a group of enabled motors.
SOFT STOP
STOP
M-2
M-3
M-4
OFF
OFF
OFF
OFF
M-5
M-6
M-7
M-8
OFF
OFF
OFF
OFF 13869.A
M-1
Operation UP button scrolls back to main screen OFF button enables an individual motor to be added to a group. Press to ON to enable a motor SOFT STOP/STOP button selects between soft stop and coast-to-stop for the group of enabled motors
NOTE:
Sub-screen PW-2 is factory set and access is only available by authorised personnel, requiring a username and password.
M-1 to M-8 sub-screens Each motor has its own sub-screen. This allows you to enable start and stop command sources from LOCAL (panel) and REMOTE (field) pushbuttons. Selection between a motor SOFT START and a DOL start is also provided. The number of sub-screens available matches the number of motors used in the system.
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M1_START/STOP ENABLE
OFF
OFF
LOCAL
REMOTE
OFF
OFF
STOP ENABLE
SOFT START 13868.A
DOL
START ENABLE
UP button scrolls back to main screen OFF button enables or disables start and stop commands from LOCAL (panel) or REMOTE (field) pushbuttons. Press to ON to enable command source DOL/SOFT START button selects between soft starting and DOL starting of the motor
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PLC main components Each multistart motor control system uses the following PLC main components and periphery equipment. The component quantity depends on the number of motors used and the switchgear configuration of the system. Item
Make
Model
Description
M1 Process Adaptor
Modicon Momentum
171 CCS 760 00
Complete PLC with CPU processor, 256K RAM, 256K flash memory and 0.63ms/K scan time 1 x Modbus RS232 port for PC connection 1 x I/O bus port Compatible with Proworx 32 and Concept software
Communication Adaptor
Modicon Momentum
170 ENT 110 02
Allows for equipment connection via an Ethernet TCP/IP Base 10 network RJ45 connector
Option Adaptor
Modicon Momentum
172 JNN 210 32
Provides the PLC processor with additional networking capabilities, time/date clocking and battery backup
Discrete Input base
Modicon Momentum
170 ADI 350 00
2 x 16, 24V DC discrete inputs
Discrete Output base
Modicon Momentum
170 ADO 350 00
2 x 16, 24V DC discrete outputs
HMI Touchscreen
Telemecanique Magelis
XBT GT2110
Monochrome graphics touch-screen terminal Preconfigured for multistart motor control system Interfaced with PLC using Modbus RS232 serial link
Power Supply (24V DC external)
Nemic Lambda
JWS 600-24
Universal power supply with 24V DC, 600W output Mounted externally to supply PLC equipment and HMI touch-screen
General information Design is modular. The multistart motor control system can easily be adapted and supplied for use on up to eight medium voltage motors. For installations using more than eight motors, or special switchgear requirements, please consult with AuCom. Design is based on a Modicon Momentum PLC system using Function Block Diagram (FBD) programming language. The PLC program is defined for up to eight motors. The HMI touch-screen will only provide relevant control options and status information, according to the specific installation. The HMI will automatically scroll back to the main screen after 2 minutes of inaction. If a motor start and stop command is received simultaneously, from either a LOCAL or REMOTE source, the stop command takes priority.
References AuCom, MVS and MVX User Manuals Schneider Electric, Modicon Momentum PLC literature Telemecanique, Magelis touch-screen literature
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