The Allen-Bradley 1771-IXE, also cataloged as the 1771-IXE Thermocouple Input Module, operates as a dedicated hardware component for temperature and millivolt signal acquisition within Allen-Bradley PLC-5 chassis systems.
Hardware Specifications
Parameter
Specification
Model
1771-IXE
Brand
Allen-Bradley
Origin
USA
Weight
0.99 lbs
Dimensions
Standard 1771 single-slot chassis module
Operating Temp
0 to 60 deg C
Power Consumption
3.75 W (750 mA at 5 VDC backplane draw)
Backplane Current
750 mA
Input Channels
8 floating differential inputs
Input Type
Thermocouple / Millivolt (+/- 100 mV)
Module Interface
Block Transfer Interface
High-Density Analog Isolation and Backplane Determinism
The 1771-IXE module leverages isolated input processing to digitize low-millivolt temperature signals without introducing ground potential errors across channels. Designed for integration across EtherNet/IP and ControlNet deterministic remote I/O links, the internal analog processing circuit formats temperature data for Block Transfer execution, preserving backplane bus communication velocity and preventing signal distortion from adjacent digital switching modules.
Frequently Asked Questions
Q: What interface protocol does the 1771-IXE module use to communicate with the PLC-5 processor?
A: The 1771-IXE uses Block Transfer instructions (BTR/BTW) to exchange multi-word configuration and analog input data across the 1771 chassis backplane.
Q: Does the 1771-IXE require an external power supply to process thermocouple signals?
A: No, all operating power for the module's internal circuitry is derived directly from the 1771 backplane bus, drawing 750 mA at 5 VDC.
Field Installation Guidelines
Turn off 1771 chassis backplane supply power before inserting or extracting the 1771-IXE module.
Align the module edge connector with the top and bottom guide rails of the designated slot and push inward until the locking latches engage.
Wire thermocouple extension leads to the designated terminal arm, ensuring shield wires are grounded at one location only to minimize noise pick-up.
Maintain physical separation between low-millivolt sensor cabling and high-voltage AC power or motor load conductors.
