Rockwell Automation 1746-NT8 SLC 500 Thermocouple/mV Analog Input Module User Manual - Manual (Page 12)

Publication 1746-UM022B-EN-P - January 2005
1-2 Module Overview
Millivolt Input Ranges
(1)
Each input channel is individually configured for a specific input
device, and provides open-circuit, over-range, and under-range
detection and indication.
Hardware Features
The module fits into any single slot for I/O modules in either an SLC
500 modular system or an SLC 500 fixed system expansion chassis
(1746-A2), except the zero slot which is reserved for the processor. It
is a Class 1 module using 8 input words and 8 output words.
(2)
The module contains a removable terminal block providing
connections for eight thermocouple and/or analog input devices. On
the terminal block are two cold-junction compensation (CJC) sensors
that compensate for the cold junction at ambient temperature. It
should also be noted there are no output channels on the module.
Configure the module with software rather than with jumpers or
switches.
S 0°C to +1768°C +32°F to +3214°F
N 0°C to +1300°C +32°F to +2372°F
CJC Sensor -25°C to +105°C -13°F to +221 °F
-50 to +50 mV
-100 to +100 mV
(1) Output impedance of input device must be less than 100 ohm to meet accuracy specifications.
(2) Requires use of a Block Transfer when used in a remote rack with a 1747-ASB.
IMPORTANT
There is a jumper (JP1) on the circuit board. The
module is shipped with the jumper in the up
position as illustrated below. Do not change the
position of JP1. The jumper is used for test purposes
only.
Type °C Temperature Range °F Temperature Range