Product Introduction
The Allen-Bradley 1769-IQ32T discrete input module delivers a high-density 32-channel solution for upgrading existing control systems. As part of the Compact I/O family, this module integrates seamlessly with MicroLogix 1500 and 1769 CompactLogix controllers. The 1769-IQ32T replaces older, bulkier input modules with a compact form factor, saving panel space while expanding I/O capacity. Its thirty-two 24VDC sink/source inputs provide flexibility for binary field devices such as switches, sensors, and auxiliary contacts.
Technical Specifications Breakdown
The Allen-Bradley 1769-IQ32T offers key specifications that ensure reliable operation in demanding environments.
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Inputs: 32 discrete inputs arranged in 4 groups of 8, allowing flexible sinking or sourcing wiring per group.
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Voltage Rating: 24V DC sink/source with an operating range of 10…30V DC at 30°C and 10…26.4V DC at 60°C.
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On-state Voltage: Minimum 10V DC ensures clear signal detection.
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Off-state Voltage: 5V DC provides reliable noise immunity.
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Input Delay (On): 8 ms filters out transient noise, reducing false triggers.
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Wire Size: 22-14 AWG copper wire rated for 90°C terminations.
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Mounting: DIN rail or panel mount with tongue-and-groove alignment for secure stacking.
Industry Applications
The Allen-Bradley 1769-IQ32T discrete input module is ideal for upgrading machine control panels, packaging lines, and material handling systems. For example, in a bottling plant, the 32 inputs can monitor conveyor belt sensors, fill level switches, and safety interlocks. The high-density design reduces the number of modules needed, simplifying wiring and troubleshooting. In a warehouse automation upgrade, the 1769-IQ32T replaces older 16-point modules, doubling input capacity within the same rack footprint.
Installation & Setup Guidance
Mount the Allen-Bradley 1769-IQ32T on a DIN rail or panel using the integrated tongue-and-groove slots. Ensure the bus lever clicks into place to establish communication with adjacent modules and the controller. Use the supplied 1746-N3 40-pin female connector or Allen-Bradley 1492 wiring system for field wiring. For sinking inputs, connect the DC common to the DC COM terminal; for sourcing, connect the positive supply to DC COM. Follow the wire size guidelines: solid 22-14 AWG copper, 90°C rated. Maintain proper group isolation and keep the module within 8 positions of the power supply (1769-PA2, PB2, PA4, or PB4). Power off before inserting or removing the module.
Compatibility & Integration
The Allen-Bradley 1769-IQ32T works with MicroLogix 1500 and 1769 CompactLogix controllers. It uses the 1769 bus architecture for high-speed data exchange. The module supports both sink and source field devices, making it compatible with a wide range of sensors and switches. Use the 1769-RTBN18 replacement terminal block for field wiring changes. The module is rated for industrial environments with operating temperature 0-60°C, vibration 5g (10-500 Hz), and shock 30g (panel mount) / 20g (DIN rail).
Selection Guide & Purchasing Advice
When upgrading to the Allen-Bradley 1769-IQ32T, verify your controller firmware supports Compact I/O. Ensure your power supply can handle the module's distance rating of 8. The module ships with the 1746-N3 connector, but you may need additional 1769-RTBN18 terminal blocks for multi-drop wiring. For OEM pricing and stock availability, contact UBEST Automation (ubest101) — a trusted source for industrial automation spares.