MFC Kit Instructions 5.0 PQconnect Option
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Table 8: Voltage Sense Wire Termination
Note: Voltage sense wire terminals J1 & J3 accept wire gauges of 16-28 AWG with a tightening
torque of 4.4 in-lb (0.5 Nm). Alternate/Equivalent tabs and ring lugs may be used for terminations.
Please consult with TCI Tech-support if there are any questions for alternate parts.
Modbus RTU
The PQconnect Modbus RTU network communication interface transmits and receives command
and status data from the PQconnect Modbus master over a RS-485 serial link. Modbus RTU is a
simple serial communications protocol originally developed by Modicon for use with Programmable
Logic Controllers (PLCs) in control of industrial devices. Modbus RTU is commonly supported by
most PLCs and is an open, royalty-free communications standard.
The PQconnect implements a Modbus RTU Master/Slave device, which supports two-wire RS-485
signal levels. The PQconnect communication port used for the Modbus RTU interface is connected
directly to the PCB. The communication port is located on the side of the PQconnect board.
Figure 15: PQconnect Modbus RTU Connection
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