Rockwell Automation 1746-BTM Barrel Temperature Control Module Installation Instructions - Manual (Page 9)

Barrel Temperature Control Module 9
Publication 1746-IN020B-EN-P - July 2002
Wire the RTB
Use the following illustration to wire the RTB:
Cold Junction Compensation (CJC)
In case of accidental removal of one or both thermistors (part number A40845-221-01),
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+) as shown below.
ATTENTION
!
Do not remove or loosen the cold junction compensating thermistors
located on the terminal block. Both thermistors are critical to
ensure accurate thermocouple input readings at each
channel
. The module will not operate in the thermocouple mode if a
thermistor is removed
CJC A+
CJC A-
Do NOT use these
connections
CJC B+
CJC Assembly
CJC Assembly
CJC B-
Retaining Screw
Retaining Screw
Channel 0+
Channel 0-
Channel 1+
Channel 1-
Channel 2+
Channel 2-
Channel 3+
Channel 3-
n/c
spare part catalog number:
1746-RT32
Always attach red
lug to the CJC+
terminal
CJC Senosr part number
A40845-221-01