Spectrum-controls 1756sc-IF8u Manuel d'utilisateur télécharger pdf (Page 32)

Wiring

Thermocouples to

the IF8u Module

One end of thermocouple to IN+

Other end of thermocouple to IN-

Thermocouple Inputs

EXC+

IN+

IN-

iRTN

CJC Sensors

TC +

TC -

CABLE SHIELD

CJC+

CJC-

White (With Potted Sensor)

White (No Sensor)

For cold junction compensation be sure the two supplied thermistors are

connected. One should be connected between CJC0-IN+ and CJC0-IN-

and the other should be connected between CJC1-IN+ and CJC1-IN-.

Also be sure configuration tag “.CJDisable” is set to zero to perform cold

junction compensation for thermocouple inputs

Cold Junction Compensation (CJC)

CAUTION

POSSIBLE EQUIPMENT OPERATION

Both CJCs are critical to ensure accurate thermocouple input

readings at each channel.

Failure to observe this precaution can cause unintended

equipment operation and damage.

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Spectrum-controls 1756sc-IF8u Manuel d'utilisateur Page 32