- an eight-channel isolated analog input module for voltage and current measurement in PLC-5 and 1771 I/O systems
- Each differential channel is electrically isolated and supports selectable unipolar or bipolar voltage and current ranges, 16-bit conversion, block-transfer communication, autocalibration, and programmable scaling or alarm functions
- Before installation or replacement, confirm Series B hardware, chassis slot, input range, transmitter wiring, isolation requirement, field-wiring arm, keying, grounding, calibration schedule, and saved block-transfer configuration
1771-IL is an eight-channel isolated analog input module for voltage and current measurement in PLC-5 and 1771 I/O systems.
Each differential channel is electrically isolated and supports selectable unipolar or bipolar voltage and current ranges, 16-bit conversion, block-transfer communication, autocalibration, and programmable scaling or alarm functions.
Before installation or replacement, confirm Series B hardware, chassis slot, input range, transmitter wiring, isolation requirement, field-wiring arm, keying, grounding, calibration schedule, and saved block-transfer configuration.
Availability, condition, price, and shipping time for 1771-IL are confirmed during quotation.
Allen-Bradley 1771-IL 8-Channel Isolated Analog Input Module Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Configure each channel for the documented voltage or current range
- Preserve scaling, data format, and alarm selections from the processor program
- Verify transmitter polarity and source impedance before energizing inputs
- Each differential input is isolated from the other input channels
- Channel-to-ground isolation supports sources with different ground potentials
- Shield routing and grounding should follow the official wiring diagrams
- Install the documented 1771-WF field-wiring arm and chassis keying
- Match the rack, group, slot, and addressing method used by the block-transfer program
- Run the documented calibration and verification steps after replacement when required
- Isolated 4–20 mA process-transmitter acquisition
- Mixed unipolar and bipolar voltage monitoring
- Analog measurement where signal sources have different ground potentials