Electrical Installation: Output Options With An M12 Male Connector; Electrical Connection For Current Output; Non-Ex Devices - Honeywell RM640 Handbook

ELECTRICAL CONNECTIONS
4

4.4 Electrical installation: output options with an M12 male connector

Figure 4-5: Terminals for electrical installation: 4-pin male M12 connector
1 Pin 1: current output +
2 Pin 2: not connected
3 Pin 3: current output -
4 Pin 4: not connected
5 Grounding terminal (external thread of the connector)
6 Location of the external grounding terminal (at the bottom of the converter)
INFORMATION!
Electrical power to the output terminal energizes the device. The output terminal is also used for
HART ® communication.

4.5 Electrical connection for current output

4.5.1 Non-Ex devices

Figure 4-6: Electrical connections for non-Ex devices
1 Power supply
2 Resistor for HART® communication (typically 250 ohms)
3 Optional connection to the grounding terminal
4 Output: 12...30 VDC for an output of 21.5 mA at the terminal
5 Device
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RM640
34-VF-25-131 iss.1 GLO Feb 2019 US