1756-IF8I ControlLogix 8-Point 4-20mA ±10V Isolated Module
Manufacturer: Allen Bradley
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Part Number: 1756-IF8I/A
Condition：New with Original Package
Product Type: Analog Input Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1756-IF8I ControlLogix 8-Point Isolated Analog Input Module Series A
Product Description
The Allen-Bradley 1756-IF8I (Series A) is a high-performance, 8-channel isolated analog input module for the ControlLogix 1756 platform. This module is specifically engineered for critical industrial applications where signal precision and electrical protection are paramount. Its primary technical advantage is the 750V AC channel-to-channel isolation, which effectively eliminates ground loops and noise interference that can occur when field devices are powered from different sources or located at varying electrical potentials.
Operating with 16-bit resolution, the 1756-IF8I supports a versatile range of analog signals, including bipolar voltage and standard current loops (4–20 mA). Each channel is individually isolated, providing a layer of hardware security that protects the entire ControlLogix backplane from field-side surges. The module features on-board diagnostics and a dedicated status LED for each channel, enabling engineers to quickly identify open-wire conditions or out-of-range signals without specialized external testing equipment.
Technical Specifications
Detailed hardware parameters and operational limits for the 1756-IF8I:
| Parameter | Specification Details |
| Model Number | 1756-IF8I (Series A) |
| Module Type | Isolated Analog Input (Current/Voltage) |
| Number of Inputs | 8 Individually Isolated Channels |
| Input Ranges (Voltage) | ±10V, 0–10V, 0–5V, 1–5V |
| Input Ranges (Current) | 0–20 mA, 4–20 mA |
| Resolution | 16-Bit |
| Isolation Voltage | 750V AC (Channel-to-Channel and Channel-to-Backplane) |
| Accuracy | ±0.1% of Full Scale |
| Backplane Current | 150 mA @ 5.1V DC; 40 mA @ 24V DC |
| Power Dissipation | 1.73 Watts |
| Module Width | Single-slot (Requires 1756-TBCH or 1756-TBNH RTB) |
| Operating Temp | 0 °C to +60 °C (32 °F to 140 °F) |
| Dimensions | 145 x 35 x 140 mm |
| Weight | 0.4 kg (0.88 lbs) |