A8 Wiring

This topic covers the wiring of the RMC200 A8 Module. See Wiring Guidelines for general wiring information.

Pin-Out

Terminal Block 1 (top)

All the Cmn pins in Terminal Blocks 1 and 2 are internally connected.

Terminal Block 2 (bottom)

All the Cmn pins in Terminal Blocks 1 and 2 are internally connected.

Voltage Transducers

To reduce electrical interference:

In- and Cmn must be connected, either internal to the transducer or externally as close as possible to the transducer.
Use individually shielded twisted-pair wire.
Connect cable shield to earth ground on one end only.
If transducer has only one common, connect Pwr Supply Common and RMC Cmn to it. For best results, make this connection at the transducer.
If the input is disconnected, input voltage will be pulled down ≤ -10V.

4- or 5-wire

3-wire

Potentiometer

Use the Exciter pin to increase the measurement accuracy of the potentiometer.

Current Transducers

To reduce electrical interference:

2-wire

4-wire

The connection of In- to Cmn should be made as close as possible to the transducer.