Effective 7/1/2003
Page 38
I.L. 70C1037H04
The Digitrip 520MC in a Magnum 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.
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.
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.
B-2
B-1
1
Magnum Breaker
2
B-2
B-1
Magnum Breaker
3
MMINT
A B COM SHD
Modbus Master
COM Inv Non Invert Input
2
3
1
4
Control voltage is 120 VAC ± 20% or 48 - 125VDC.
Communication Cable is C-H style 2A957805G01 or Belden 9463 cable.
The overall network will support up to 32 devices with any addresses from 1 to 247
Terminating resistor is 121 ohm 1 watt. Use the mMINT switches to insert these terminators at the mMINT device.
Notes:
Digitrip 520 M C
Digitrip 520 M C
Appendix D MODBUS TRANSLATOR Wiring
