An External Termination Resistor (ETR) is used when a Temperature Monitoring Module (TMM) channel is configured for a 4-20mA process variable input type. The resistor’s function is to convert the proportional loop current into a TMM-compatible voltage. The ETR is supplied as an assembly suitable for mounting on a 35mm DIN rail and consists of a 68Ω resistor and an appropriate Weidmuller component holder that facilitates ease of wiring.
Part Number: 100543
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NOTE: The termination resistor is only required for TMM channels configured for process variable inputs. UMM channels configured for process variable inputs have the necessary internal circuitry to directly accept 4-20mA inputs and do not require this external termination resistor.