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The 1769-IF4 (Part Number: 1769-IF4) is a precision analog expansion module designed for the Allen-Bradley CompactLogix and MicroLogix 1500 controller platforms. This module provides four high-density input channels capable of interfacing with a wide variety of industrial...
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The 1769-IF4 (Part Number: 1769-IF4) is a precision analog expansion module designed for the Allen-Bradley CompactLogix and MicroLogix 1500 controller platforms. This module provides four high-density input channels capable of interfacing with a wide variety of industrial sensors. Engineers can configure each channel individually to accept either voltage or current signals, providing the versatility needed for complex process monitoring in a compact form factor.
A key technical advantage of the 1769-IF4 is its 16-bit analog-to-digital conversion, which ensures high-fidelity data acquisition for critical variables such as pressure, temperature, and flow. To accommodate diverse wiring environments, the module supports both single-ended and differential input configurations, effectively reducing the impact of electromagnetic interference and common-mode noise on signal accuracy.
| Specification | Details |
|---|---|
| Input Channels | 4 Analog Inputs (Individually Configurable) |
| Voltage Ranges | ±10V DC, 0 to 10V DC, 0 to 5V DC, 1 to 5V DC |
| Current Ranges | 0 to 20 mA, 4 to 20 mA |
| Conversion Resolution | 16-bit unipolar; 15-bit plus sign bipolar |
| Input Impedance | Voltage terminal > 1MΩ; Current terminal = 250Ω |
| Isolation Voltage | 30V (continuous) channel-to-system; tested at 500V AC or 707V DC for 1 minute |
| Backplane Current Load | 105 mA at 5.1V DC; 40 mA at 24V DC |
| Power Consumption | 2 Watts maximum |
| Thermal Dissipation | 1.51 Watts |
| Response Time | Configurable filter frequencies from 10 Hz to 1000 Hz |
| Physical Dimensions | 118 mm x 35 mm x 87 mm |
| Module Weight | 0.29 kg |
The 1769-IF4 is widely deployed in:
Water treatment facilities for level monitoring
Chemical processing for flow rate detection
HVAC systems for pressure sensing
Its high resolution makes it ideal for any application where precise feedback is required to maintain tight closed-loop control.
Does the 1769-IF4 require an external 24V DC power supply?
Yes, while the module communicates via the backplane, an external 24V DC supply is necessary to power the analog circuitry and provide excitation to the sensors where required.
Can I mix voltage and current signals on the same module?
Absolutely. The 1769-IF4 allows for independent channel configuration, meaning you can have a 4-20mA pressure sensor on Channel 0 and a 0-10V position sensor on Channel 1 simultaneously.
