Power Wiring To Universal Iv Cm To The Dcm Module - Ametek Drexelbrook Universal IV CM Installation And Operating Instructions Manual

Universal IV™ CM Density Compensated Model

2.2.3 Power Wiring to Universal IV CM to the DCM Module

If trying to communicate via HART on the 4-20mA Loop, you must have a 250Ω resistor in series with the Loop.
The DCM backboard wiring to the CM must go through the bottom
of the DCM housing or else the transmitter will not secure properly.
Due to the potential for switching interference on the relay it is
recommended the relay wires exit the housing via the opposite port
of the other wiring entering the housing.
Reference Appendix A for information on the
Modbus terminating resistor
9