Allen-Bradley 1756-IF8I ControlLogix Isolated Voltage Current
Manufacturer: Allen Bradley
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Part Number: 1756-IF8I
Condition：New with Original Package
Product Type: Isolated 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-Channel Isolated Analog Input Module
Product Description
The Allen-Bradley 1756-IF8I is a high-precision, individually isolated analog input module for the ControlLogix® platform. Designed for applications where signal integrity is paramount, this module provides 8 channels of electrical isolation. By isolating each channel from one another and from the backplane, the 1756-IF8I effectively eliminates ground loops and significantly reduces common-mode noise interference, making it the ideal choice for environments with disparate power sources or high electromagnetic interference (EMI).
This module utilizes a Sigma-Delta conversion method and offers an exceptional resolution of up to 24 bits, providing the fine granularity required for sensitive process measurements. A unique feature of the 1756-IF8I is its ability to operate in "Sourcing Current" mode, where the module provides loop power directly to the field transmitter, simplifying wiring by removing the need for an external bulk power supply for 2-wire sensors.
Technical Specifications
Hardware parameters and operational limits for the 1756-IF8I:
| Parameter | Specification Details |
| Model Number | 1756-IF8I |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Module Type | Isolated Analog Input (Voltage/Current) |
| Number of Channels | 8 Individually Isolated Channels |
| Input Signal Ranges | ±10V, 0–10V, 0–5V, 0–20mA, 4–20mA |
| Conversion Method | Sigma-Delta |
| Resolution | 24-bit (Input Resolution); 16–21 bit (Effective) |
| Backplane Current (5.1V) | 200 mA |
| Backplane Current (24V) | 150 mA (Voltage) / 400 mA (Sourcing Current) |
| Power Dissipation (Max) | 7.3 W (Sourcing Current mode) |
| Thermal Dissipation | 24.9 BTU/hr (Sourcing Current mode) |
| Isolation Voltage | 250V (Continuous), Channel-to-Channel & Channel-to-Backplane |
| Data Format | IEEE 32-bit Floating Point or Integer |
| Removable Terminal Block | 1756-TBCH or 1756-TBSH (36-pin) |