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Effective 11/2003
Page 80
I.L. 66A7535H02
Appendix I MODBUS TRANSLATOR Wiring
2
3
The overall network will support up to 32 devices with any addresses from 1 to 247
The Digitrip 1150V in a Type VCP-T Circuit Breaker can communicate its data using Modbus RTU protocol by
employing a mMINT device to act as a translator from INCOM communicationto MODBUS
communications. A Modbus master device is shown wired to gather data and can provide control
logic to open and close breakers.
The mMINT module CAT # MMINT use DIN rail mounting. Connector types are
plug-in-Phoenix. . Power is 5 pin. INCOM network uses a 3 pin. The RS-485 MODBUS
uses a 4 pin connector which consist of signals A, B, COMmon and SHielD.
Control voltage is 120 VAC ± 20% or 48 - 125VDC.
Communication Cable is C-H style 2A957805G01 or Belden 9463 cable.
1
Three Baud rates of 1200, 9600 or 19200 are selectable via programming switch for the
MODBUS network. The INCOM Baud rate is fixed at 9600 Baud.
4
Terminating resistor is 121 ohm 1 watt. Use the mMINT switches to insert these terminators
at the mMINT device.
B-2
B-1
1
Circuit Breaker
2
Digitrip 11 50
B-2
B-1
Circuit Breaker
Digitrip 1150
3
Notes:
MMINT
A B COM SHD
Modbus Master
COM Inv Non Invert Input