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- 1769-PA2
- CompactLogix I/O Module
- USA
- 118 mm × 55 mm × 105 mm
- 0.49kg
- Xiamen, China
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Technical Report: Compact I/O Power Supply Module 1769-PA2
1. Product Overview
The 1769-PA2 is a compact industrial AC input power supply module designed for Compact I/O systems used in modular PLC architectures.
It provides regulated 5V DC and 24V DC backplane power to support I/O modules in distributed control systems.
This module is a core power component in Compact I/O racks, ensuring stable voltage supply for both controller and expansion modules.
It is widely used in industrial automation systems requiring reliable power distribution for modular PLC expansion.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: PLC Power Supply Module
- Technology Field: Industrial Automation / Control Power Systems
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: Compact I/O Series
- System Architecture: Modular PLC expansion platform
- Compatibility: Compact PLC controllers and 1769 I/O modules
- Installation Type: DIN rail backplane mounted power unit
The power supply is designed to feed multiple I/O modules on both sides of the rack in a modular configuration.
4. Product Introduction
The 1769-PA2 converts 120/240V AC input power into regulated DC power required by PLC backplane systems.
It provides both 5V DC logic power and 24V DC field power, supporting multiple connected I/O modules within a single rack system.
This module is typically installed at the left side of a Compact I/O assembly and acts as the main power backbone for the system.
5. Technical Parameters
5.1 Electrical Performance
| Parameter | Value |
|---|---|
| Input Voltage Range | 85–265V AC |
| Input Frequency | 47–63 Hz |
| Output Voltage (Backplane) | 5V DC / 24V DC |
| Current Capacity @ 5V DC | 2.0 A |
| Current Capacity @ 24V DC | 0.8 A |
| Power Consumption | 100 VA @ 120V AC / 130 VA @ 240V AC |
| Inrush Current | Up to 25 A @ 132V AC |
| Power Dissipation | ~8 W @ 60°C |
| Power Distribution Distance | Up to 8 modules per side |
5.2 Electrical Isolation & Protection
| Parameter | Value |
|---|---|
| Isolation Voltage | 265V continuous reinforced insulation |
| Test Voltage | 2596V DC for 1 second |
| Protection Class | Industrial reinforced insulation |
| Grounding Requirement | Protective earth required |
| Safety Standard Type | IEC Class 1 |
5.3 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 118 mm |
| Width | 70 mm |
| Depth | 87 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.49 kg (approx. 0.40–0.52 kg depending on revision) |
| Form Factor | Power supply module (1 slot width) |
5.4 Wiring & Installation
| Parameter | Value |
|---|---|
| Wire Type | Copper conductor |
| Solid Wire Size | 14–22 AWG |
| Stranded Wire Size | 16–22 AWG |
| Input Wiring | AC line and neutral / dual phase |
| Output Connection | Backplane integrated distribution |
| Installation Position | Left-side rack module |
6. Product Applications
The 1769-PA2 is used wherever Compact I/O systems require stable power distribution.
Typical application fields:
- PLC-based industrial automation systems
- Machine control cabinets
- Manufacturing production lines
- Packaging and filling systems
- Conveyor automation systems
- Water treatment control panels
- HVAC automation systems
- OEM industrial equipment
Functional role in system:
- Provides backbone power for I/O modules
- Supplies logic power for communication and processing
- Supports multiple expansion modules in a single rack
- Stabilizes voltage in distributed PLC architecture
7. Product Advantages
7.1 Stable Dual Output Power
Provides both 5V logic power and 24V field power in a single module.
7.2 Wide Input Compatibility
Supports 85–265V AC, allowing use in different industrial regions without modification.
7.3 Modular Expansion Support
Designed to power up to 8 I/O modules per side, enabling flexible system scaling.
7.4 High Electrical Isolation
Reinforced insulation ensures safe separation between AC input and PLC backplane.
7.5 Industrial Reliability
Built for continuous operation in harsh electrical environments with voltage fluctuation tolerance.
7.6 Compact System Integration
Compact footprint allows direct integration into modular PLC racks without external power supplies.
8. Recommended Models (Same Series / Related Modules)
8.1 Same Series / Closely Related Modules
| Model | Description | Key Parameters |
|---|---|---|
| 1769-PB2 | DC input power supply module | 24V DC input version |
| 1769-PA4 | Higher capacity AC power supply | Increased output current capacity |
| 1769-IF4 | 4-channel analog input module | Voltage/current signal acquisition |
| 1769-OF4CI | 4-channel analog current output | 4–20 mA precision control |
| 1769-OW16 | 16-channel relay output module | AC/DC switching outputs |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1769-L24ER | PLC Controller | Integrated CPU, Ethernet communication, modular expansion |
| 1769-L33ER | PLC Controller | High-performance processing, motion control support |
| 1769-IQ16 | Digital Input Module | 16-channel discrete input, fast switching |
| 1769-OB32 | Digital Output Module | 32-channel transistor output, high-density control |
| 1769-IF8 | Analog Input Module | 8-channel process signal acquisition |
10. Summary
The 1769-PA2 is a core power supply module in Compact I/O systems, providing stable AC-to-DC conversion and backplane power distribution for modular PLC architectures.
Its wide input range, strong isolation, and reliable dual-output design make it a fundamental component in industrial automation systems requiring scalable and stable power infrastructure.