Specifications

Analog Input Modules

158

31007715 6/2008

Wiring a TC

with External

Cold-junction

Compensation

When you apply external cold-junction compensation (see p. 163) to the module,

you must use a two-wire RTD and connect it to pins 2 and 5 on the top connector.

For optimum results, connect copper wires to pins 2 and 5 on the top connector and

run them to an isothermal terminal block. Make the TC wiring connection to the

terminal block and embed the RTD in the terminal block:

Cold-junction compensation is configured at the module level, and therefore it

applies to any TC sensor(s) connected to the top and/or bottom connector on the

STB ART 0200 module.

Note: When external cold-junction compensation is applied to the module, you may

configure channel 1 to support a TC or mV sensor, but you should not configure it

to support an RTD that senses process values.

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