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- Allen Bradley
- 1769-IQ32
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.97kg
- Xiamen, China
- New & In Stock
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Technical Report: 1769-IQ32 Compact I/O 32-Point 24V DC Digital Input Module
1. Product Overview
The 1769-IQ32 is a high-density 24V DC digital input module designed for Compact I/O automation systems. It provides 32 discrete input channels and is widely used in CompactLogix and MicroLogix 1500 architectures.
This module is designed for large-scale discrete signal acquisition, allowing industrial systems to monitor a high number of sensors, switches, and field devices using a single compact module.
Its main value lies in channel density, wiring reduction, and stable 24V DC signal handling in industrial environments.
2. Brand and Series Information
Brand: Industrial automation control platform ecosystem
Series: 1769 Compact I/O Series
Product Family: DC Digital Input Modules
Module Type: 32-Point 24V DC Sink/Source Input Module
3. Product Function Description
The 1769-IQ32 is responsible for converting 24V DC field signals into PLC-readable digital logic states.
Core functions include:
- 32 DC digital input channels
- 24V DC sink/source compatible design
- 4 input groups (8 channels per group)
- ON/OFF signal detection from field devices
- LED status indicator per channel
- Electrical isolation between field wiring and PLC backplane
- Fast and reliable industrial signal acquisition
It is commonly used in systems where large numbers of discrete signals must be processed efficiently.
4. Technical Parameters
Electrical Specifications
| Parameter | Value |
|---|---|
| Number of Inputs | 32 channels |
| Input Voltage Range | 10–30V DC |
| Nominal Voltage | 24V DC |
| Off-state Voltage | ≤5V DC |
| On-state Voltage | ≥10V DC |
| Input Type | Sink/Source DC digital input |
| Backplane Current | ~170 mA @ 5V DC |
| Power Dissipation | ~4.6 W |
| Input Delay | ~8 ms ON/OFF |
Performance Specifications
| Parameter | Value |
|---|---|
| Response Time | ~8 ms typical |
| Input Grouping | 4 groups × 8 channels |
| Input Compatibility | IEC Type 1+ industrial inputs |
| Switching Reliability | High-duty industrial cycle |
| Diagnostic Function | LED per channel |
Isolation & Protection
| Parameter | Value |
|---|---|
| Isolation Voltage | 1200V AC / 1697V DC (1s test) |
| Isolation Type | Input-to-bus reinforced isolation |
| Working Voltage | IEC reinforced insulation class |
| Protection Level | Industrial control-grade insulation |
| EMC Immunity | High industrial noise resistance |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Dimensions (H × W × D) | 118 mm × 35 mm × 87 mm |
| Height with Tabs | 138 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Weight | ~0.44–0.97 kg |
| Mounting Type | DIN rail / panel mount |
| Slot Width | 1.5 slot class |
| Terminal Type | Removable terminal block |
Environmental Specifications
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5% – 95% non-condensing |
| Vibration Resistance | Industrial IEC standard |
| Shock Resistance | Up to 15G |
| Industrial Grade | Open-style enclosure |
5. Product Advantages
1. Very High Channel Density
32 inputs in a single module significantly reduce cabinet space and wiring complexity.
2. Cost-Efficient Expansion
One module replaces multiple smaller input cards, reducing system hardware count.
3. Stable 24V DC Signal Handling
Designed specifically for industrial DC sensors and switching devices.
4. Strong Electrical Isolation
Protects PLC backplane from field-side electrical disturbances.
5. Flexible Wiring Design
Supports both sink and source configurations, improving installation flexibility.
6. Proven Industrial Usage
Widely deployed in manufacturing, packaging, and process control systems.
6. Application Areas
The 1769-IQ32 is widely used in:
- Large industrial automation systems
- Conveyor and material handling lines
- Packaging and bottling plants
- Machine tool automation
- Pump and valve monitoring systems
- Motor control interlock systems
- Factory-wide sensor networks
- HVAC and building automation systems
It is especially suitable for high-density discrete signal environments.
7. Recommended Models (Same Series / Related Modules)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-IQ16 | 16-point DC input | Standard density input | Medium systems |
| 1769-IQ16K | Conformal coated input | Harsh environment version | Humid/chemical areas |
| 1769-IQ16F | Fast DC input | High-speed response | Fast switching signals |
| 1769-IQ32K | Rugged DC input | Coated high-density input | Harsh industrial sites |
| 1769-IA16 | AC input module | 120/240V AC input | AC signal systems |
8. Other Popular Models (Same Platform – Widely Used)
| Model | Type | Key Parameters | Application |
|---|---|---|---|
| 1769-L33ER | PLC Controller | EtherNet/IP CPU | Machine automation |
| 1769-L36ERM | Motion PLC | High-performance CPU | Advanced control |
| 1769-AENTR | Ethernet Adapter | Dual-port communication | Distributed I/O |
| 1769-SDN | DeviceNet Scanner | Fieldbus master | Legacy integration |
| 1769-ASCII | Serial Module | ASCII protocol | Barcode / serial devices |
9. System Role Summary
The 1769-IQ32 serves as a high-capacity digital input acquisition module in Compact I/O systems. It is designed for applications requiring a large number of discrete 24V DC input signals within a compact hardware footprint.
It plays a central role in large-scale industrial automation systems where signal density and wiring efficiency are critical.
10. Summary
The 1769-IQ32 is a 32-point 24V DC digital input module designed for high-density industrial signal acquisition. It provides stable performance, strong isolation, flexible wiring, and efficient system integration.
Its key strengths include high channel density, reliable DC signal processing, compact design, and wide industrial applicability.