Rockwell Automation 1746-INT4 Thermocouple/MV Isolated/ User Manual - Manual (Page 30)

Publication 1746-UM614B-EN-P - September 2007
30 Install and Wire the Module
Wire the Module The module contains a green, 18-position, removable terminal block.
Terminal Block
Cold-junction Compensation (CJC)
In case of accidental removal of one or both thermistors, replace them
by connecting them across the CJC terminals located at the top and/or
bottom left side of the terminal block. Always connect the red lug to
the (+) terminal (to CJC A+ or CJC B+).
CJC Connection
ATTENTION
Disconnect power to the SLC controller before attempting to
install, remove, or wire the terminal block.
ATTENTION
Do not remove or loosen the cold-junction compensating
thermistors located on the terminal block. Both thermistors are
critical to be sure of accurate thermocouple input readings at
each channel. The module does not operate in the
thermocouple mode if a thermistor is removed.
CJC A-
CJC A+
CJC B+
CJC B-
n/c
(Terminal Block Spare Part Catalog Number 1746-RT32)
Release Screw
Channel 0+
Channel 0-
Channel 1+
Channel 1-
Channel 2+
Channel 2-
Channel 3+
Channel 3-
Do not connect
to this terminal.
Release Screw
CJC Assembly
CJC Assembly
Do NOT use
these
connections
See page 26.
Always attach
red lug to the
CJC+ terminal.
Bottom of Terminal Block
Thermistor