4-Channel Thermocouple Input

This analog input device allows for direct connection of four thermocouples. The Bus Terminal’s circuitry can operate thermocouple sensors using the 2-wire technique. The temperature range is selectable, and the response is linear. Compensation for the cold junction is made through an internal temperature measurement at the terminals. In addition to temperature, these inputs can also be used for mV measurement.

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Electrical and Mechanical Specification


Number of inputs


Power supply

via the K-bus

Thermocouple sensor types

types J, K, L, B, E, N, R, S, T, U (default setting type K), mV measurement

Connection Method


Temperature range

in the range defined in each case for the sensor (default setting: type K; -100…+1,370 °C)


0.1 °C per digit

Conversion time

~ 250 ms

Wiring fail indication


Measuring error

< ±0.5 % (relative to full scale value)

Electrical isolation

500 Vrms (Standard-bus/signal voltage)

Current consumption from Standard-bus

typ. 75 mA

Bit width in the process image

input: 4 x 16 bit data (4 x 8 bit control/status optional)


no address setting, configuration via Bus Coupler or controller


75 g

Operating/storage temperature

0 C ... +55 °C /-25 °C... +85 °C

Relative humidity

95 %, no condensation

Vibration / shock resistance

conforms to EN 60068-2-6 / EN 60068-2-27/ 29

EMC immunity/emission

conforms to EN 61000-6-2 / EN 61000-6-4

Protect. class / installation pos.

IP 20 / variable


Data Sheet

Kollmorgen 4Ch-Thermocouple Datasheet en-us revAKollmorgen 4Ch-Thermocouple Datasheet en-us revA187.2 KB8/28/2012Email
US Production