Product Overview
The Allen-Bradley 1769-IF4 is a 4-channel analog input module designed for the CompactLogix and MicroLogix 1500 controller families. It accepts both current and voltage signals, making it a versatile choice for industrial automation systems that monitor sensors, transmitters, and other analog devices.
With its Delta-Sigma converter and 14-bit resolution (unipolar) or 14-bit plus sign (bipolar), the 1769-IF4 delivers precise digital representation of analog signals. Its flexible configuration supports differential, single-ended, and mixed transmitter inputs, letting you adapt the module to your specific wiring needs.
Technical Specifications
Below are the key specifications for the Allen-Bradley 1769-IF4, sourced directly from the manufacturer's data:
| Parameter |
Value |
| Manufacturer |
Rockwell Automation |
| Brand |
Allen-Bradley |
| Part Number |
1769-IF4 |
| Product Line |
CompactLogix |
| Module Type |
4-Channel Analog Input Module |
| Input Type |
Analog Input |
| Compatible Controllers |
MicroLogix 1500; 1769 CompactLogix |
| Number of Inputs |
4 Differential and Single-Ended Inputs |
| Input Current Range |
0-21 mA |
| Current Signal Normal Ranges |
0-20 mA; 4-20 mA |
| Current Signal Full Range |
0-21 mA; 3.2-21 mA |
| Input Voltage Range |
0-10.5 VDC |
| Voltage Signal Normal Ranges |
±10V DC, 0-10V DC, 0-5V DC, 1-5V DC |
| Voltage Signal Full Range |
±10.5V DC, -0.5-10.5V DC, -0.5-5.25V DC, 0.5-5.25V DC |
| Converter Type |
Delta Sigma |
| Resolution |
14 bits (unipolar), 14 bits plus sign (bipolar) |
| Backplane Current |
1.4 Amps at 24 Volts |
| Power Consumption |
33.6 Watts |
| Power Dissipation |
7.5 Watts |
| External Power Switch |
24 VDC |
| Rated Working Voltage |
30VAC; 30VDC |
| Series |
A and B |
| Shipping Weight |
2 lbs. |
| Shipping Dimensions |
8 x 8 x 5 in. |
Key Features & Benefits
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Flexible Input Configuration: Each of the four channels can be set for differential or single-ended wiring, accommodating a wide range of sensors and transmitters.
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High Resolution: With 14-bit unipolar and 14-bit plus sign bipolar resolution, the 1769-IF4 ensures accurate signal conversion.
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Delta-Sigma Conversion: The built-in Delta-Sigma ADC provides stable and precise digital output.
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Auto-Calibration: The module performs auto-calibration when a channel is enabled or reconfigured, simplifying setup and maintaining accuracy.
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Diagnostic Capabilities: Internal open-circuit detection automatically activates when a channel is enabled, helping to identify wiring faults quickly.
Applications
The Allen-Bradley 1769-IF4 is ideal for applications that require reliable analog signal acquisition. Typical use cases include:
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Process Monitoring: Connect 4-20 mA transmitters for pressure, temperature, or flow monitoring in industrial processes.
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Machine Control: Use voltage inputs (0-10 VDC) to interface with drives, valves, or position sensors in automated machinery.
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Data Acquisition: Capture analog signals from multiple sensors for SCADA or HMI systems, enabling real-time data visualization and control.
Installation & Setup
Mount the 1769-IF4 on a DIN rail or panel within the CompactLogix system. Use Belden or equivalent cables for wiring. The module supports 22-14 AWG solid and 22-16 AWG stranded wires. Configure each channel's input type (current or voltage) and range via the controller's programming software. Ensure an external power supply matches the transmitter's specifications, as the module does not provide loop power.
Maintenance & Reliability
The 1769-IF4 is designed for long-term reliability in industrial environments. Its operating temperature range is 0 to 60°C, with storage from -40 to 85°C. It withstands vibration up to 5 g at 10-500 Hz and shock up to 30 g. To maintain accuracy, periodically check wiring connections and verify that input signals remain within specified ranges. The module's auto-calibration feature helps sustain performance over time.
Compatibility & Integration
This module works with MicroLogix 1500 and 1769 CompactLogix controllers. It integrates seamlessly into existing CompactLogix systems, allowing you to expand analog I/O capabilities without major redesign. The 1769-IF4 supports both Series A and Series B versions, offering flexibility in system upgrades.
Selection Guide & Purchasing Advice
When purchasing the Allen-Bradley 1769-IF4, verify that your controller is compatible (MicroLogix 1500 or 1769 CompactLogix) and that the input ranges meet your application requirements. Consider the number of channels needed and whether you require differential or single-ended inputs. For reliable sourcing, PLC Source PRO offers genuine parts with fast shipping and competitive pricing.