MPS3000 TERMINALS
Page 15 of 67
MPS3000-C special use:
The relays can be configured with contactors control functions which may be required, according to the control
application.
Output A Relay:
Can be configured as one of:
* DOL starting
* Star period of Star-Delta starting
* Forward of a forward-reverse motor
* High speed of two-speed motor
Output B Relay:
Can be configured (by parameter setting) as one of the following functions:
* Delta period of Star/Delta starting
* Reverse of a forward-reverse motor
* Low speed of two-speed motor
Output C Relay:
Can be configured (by parameter setting) as one of the following functions:
* Contactor A status.
* Contactor B status.
* Start/Run - controls line contactor in Star-Delta starters.
Serial Link
Standard RS485 Half Duplex, with MODBUS protocol.
Twisted shielded pair should be used for wiring. Shield should be connected to Chassis Ground externally,
near the MPS3000.
Acceptable baud rates: 1200, 2400, 4800, 9600 and 19200 BPS.
Serial Port (+) .........................................23
Serial Port (-) ......................................... 22
Serial Port (shield) ................................. 63
Notes:
1. Auxiliary Power Supply must power-cycled after changing communication's settings (e.g. baud-
rate).
2. Connect 120 Ohm resistors between (+) and (-) at the end and at the beginning of the line.
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