Emerson CMF200A installation manual Connecting the wires at the core processor

Wiring

Figure 19 Connecting the wires at the core processor

Enhanced core processor		Standard core processor
	Terminal 3	Terminal 1	Terminal 4
		Power supply +	RS-485/B
	RS-485/A
		(Red wire)	(Green wire)
	(White wire)
	Terminal 4
	RS-485/B
	(Green wire)

Terminal 1 Power supply + (Red wire)

Terminal 2 Power supply – (Black wire)

Core processor housing internal ground screw

•For connections to earth ground (if core processor cannot be grounded via sensor piping and local codes require ground connections to be made internally)

•Do not connect shield drain wires to this terminal

Terminal 3

RS-485/A

(White wire)

Terminal 2

Power supply –

(Black wire)

7.Reinstall and tighten the core processor housing cover.

8.Additional wiring instructions for the transmitter can be found in the transmitter manual. Note: Never ground the 4-wire cable shield and shield drain wire(s) at the transmitter.

Junction box to a 9-wire remote transmitter or remote core processor

Follow the steps below to connect the 9-wire cable between the sensor and the transmitter or core processor.

1.Prepare and install the cable according to the instructions in Micro Motion’s 9-Wire Flowmeter Cable Preparation and Installation Guide.

2.Insert the stripped ends of the individual wires into the terminal blocks. No bare wires should remain exposed.

3.Match the wires color for color. For wiring at the transmitter or remote core processor, refer to the transmitter documentation.

4.Tighten the screws to hold the wires in place.

5.Ensure integrity of gaskets, then tightly close and seal the junction box cover and all housing covers on the transmitter or core processor.

Installation Manual 19