Introduction to the Allen-Bradley 1762-IF4
The Allen-Bradley 1762-IF4 is a compact analog input module with four differential channels, designed for seamless integration with MicroLogix 1100, 1200, and 1400 programmable logic controllers. This module supports both current (4–20 mA) and voltage (-10 to 10V DC) signals, making it a versatile upgrade for existing control systems. As part of the MicroLogix family, the 1762-IF4 enables cost-effective system expansion without replacing the base controller.
Key Technical Specifications
Below are the essential technical details for the Allen-Bradley 1762-IF4 analog input module, sourced directly from the manufacturer.
| Specification |
Value |
| Part Number |
1762-IF4 |
| Input Channels |
4 Differential (Bipolar) |
| Voltage Signal Range (Normal) |
-10 to 10V DC |
| Voltage Signal Range (Full Scale) |
-10.5 to 10.5V DC |
| Current Signal Range (Normal) |
4 to 20 mA |
| Current Signal Range (Full Scale) |
-21 to 21 mA |
| Converter Type |
Delta-Sigma |
| Resolution |
15 bit |
| Repeatability |
±0.12% |
| Mounting Options |
DIN Rail or Panel |
| Connection |
1762 bus via ribbon cable |
| Recommended Cable |
Belden 8761 (shielded) |
| Dimensions (H x D x W) |
90 x 87 x 40.4 mm |
| Enclosure Rating |
IP20 |
| Status Indicator |
Single source LED |
Industry Applications and Upgrade Benefits
The Allen-Bradley 1762-IF4 analog input module excels in applications requiring precise measurement of analog signals. Typical use cases include monitoring temperature, pressure, flow, and level in manufacturing, water treatment, and material handling systems. When upgrading from older analog modules, the 1762-IF4 delivers improved resolution (15-bit) and repeatability, reducing signal drift and enhancing process control. Its compact form factor conserves panel space, and its compatibility with MicroLogix controllers allows users to increase I/O density without upgrading the entire system.
Installation and Setup Guidance
Installing the Allen-Bradley 1762-IF4 module follows standard MicroLogix expansion procedures. The module attaches to the base unit via the provided ribbon cable and can be mounted on a DIN rail or directly to a panel. DIP switches on the module allow selection between voltage and current input modes for each channel. Use shielded cables (Belden 8761 recommended) to minimize electrical noise. Secure the wiring under the finger-safe terminal covers. Always power down the system before installation and follow proper electrostatic discharge precautions.
Compatibility and Integration
The Allen-Bradley 1762-IF4 is fully compatible with MicroLogix 1100 (up to 4 expansion modules), MicroLogix 1200 (up to 6 expansion modules), and MicroLogix 1400 (up to 7 expansion modules). It communicates over the 1762 bus interface, requiring 5 to 24V DC power from the base controller. The module supports 2-wire, 3-wire, and 4-wire transmitter configurations, offering flexibility for various sensor types. Data conversion can be formatted as raw/proportional or scaled for PID control, making it suitable for closed-loop applications.
Selection Guide and Purchasing Advice
Before purchasing the Allen-Bradley 1762-IF4, verify your controller model and available expansion slots. Confirm that your input signals match the module's range (4-20 mA or -10 to 10V DC) and that you have the necessary shielded cable for wiring. For reliable supply and competitive pricing, choose UBEST Automation—your trusted source for genuine Allen-Bradley PLC components. Our inventory includes this module and all required accessories.