Allen-Bradley 1771-IFE PLC5 Analog Input Module
The 1771-IFE is a high-density analog input module for the PLC5 platform. It accepts 16 single-ended or 8 differential field inputs. It converts process signals (voltage or current) into digital values for the controller.
This module supports multiple input ranges: ±10V, 0-10V, 1-5V, 0-5V, ±5V, 4-20mA, 0-20mA, and ±20mA. It uses 12-bit binary plus sign resolution for bipolar ranges. The 1771-IFE suits temperature, pressure, flow, and level measurement.
Key Technical Specifications
| Brand | Allen-Bradley (Rockwell Automation) |
| Model | 1771-IFE |
| Input Channels | 16 Single-Ended or 8 Differential (selectable) |
| Voltage Ranges | ±10V, 0-10V, 1-5V, 0-5V, ±5V dc |
| Current Ranges | 4-20mA, 0-20mA, ±20mA |
| Resolution | 12-bit binary; 12-bit + sign (bipolar) |
| Accuracy | ±0.1% of full scale @ 25°C |
| Channel Update | 8 ms (8 diff) / 36 ms (16 single-ended) |
| Data Format | Natural Binary or BCD (scale to ±9999) |
| Backplane Current | 750 mA (external load) |
| Power Dissipation | 2.5 W max; 8.52 BTU/hr |
| Slot Width | 1 slot (any 1771 chassis) |
| Wiring Arm | 1771-WG (removable) |
| Isolation | Optoelectrical (transient protection) |
| Digital Filter | Reduces electrical noise (programmable) |
| Operating Temp. | 0 to 60°C (ambient) |
| Humidity | 5–95% non-condensing |
| EMI Immunity | Built-in filtering & shielding |
| Certifications | UL, CSA, CE (for industrial use) |
Installation & Commissioning
- Chassis: fits any 1771 I/O chassis – one slot only.
- Keying: upper pins 24 & 26 ; lower pins 10 & 12 .
- Wiring: use 1771-WG removable arm – replace module without rewiring.
- Configuration: block transfer programming; set range, filter, scaling per channel.
- Diagnostic LEDs: green RUN and red FAULT for quick status check.
- Fault response: user-defined safe states on communication loss.
Compatibility & Maintenance
- PLC compatibility: native to PLC-5 family (1771 backplane).
- Software: RSLogix 5, block transfer instructions.
- Maintenance: front-accessible LEDs; no external power needed.
- Surplus/Refurbished: tested units available with 12-month warranty.
Typical Applications & Diagnostics
- Process variables: pressure, level, flow, temperature, pH, viscosity, displacement.
- Diagnostics: over-range/under-range detection; configurable digital filtering; real-time sampling.
- Fault prediction: automatic safe-state response on communication fault.
- Noise rejection: optoisolation + filter reduces transient interference.
Frequently Asked Questions
- Can I mix voltage and current inputs? Yes, each channel is independently configurable.
- What is the update time for 16 channels? 36 ms (without filtering).
- Is external power required? No, it draws 750 mA from backplane.
- Does it support BCD output? Yes, scaling to ±9999 BCD or binary.
- Warranty? 12 months from Oiltech Controls.
Why Buy From Oiltech Controls?
- 15+ years in industrial automation spares.
- Global shipping via FedEx, UPS, DHL.
- All modules tested (surplus/refurbished) before shipment.
- 12-month warranty on every product.
- Technical verification and support for obsolete systems.
- We help keep your legacy PLC-5 and Modicon Quantum systems running.
Contact: info@oiltechcontrols.com |
+86 158 8020 0923 (WhatsApp)
Related: Modicon Quantum Series |
Original Source
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
%20into%20digital%20values%20for%20the%20controller.%20This%20module%20supports%20multiple%20input%20ranges:%20±10V,%200-10V,%201-5V,%200-5V,%20±5V,%204-20mA,%200-20mA,%20and%20±20mA.%20%5B…%5D&media=https://www.oiltechcontrols.com/wp-content/uploads/2025/09/1771-IFE_.jpg){kind=link}
Reviews
There are no reviews yet.