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Description
The Allen-Bradley 1769-PA4 is a high-performance AC power supply module designed for use within the CompactLogix 1769 I/O system. This module provides the necessary DC power to the I/O bus, supporting a wide range of industrial automation applications. It features a switch-selectable input voltage range, allowing for flexibility in global power environments. The 1769-PA4 is engineered for reliability in open-style enclosures, ensuring consistent power delivery to connected I/O modules.
Features
- Switch-selectable input voltage range (85 to 265V AC or 170 to 265V AC).
- Provides 4.0 A at 5V DC and 2.0 A at 24V DC output current capacity.
- Supports a power supply distance rating of 8, allowing up to 16 modules total (8 on either side).
- Designed for operation in 47 to 63 Hz frequency ranges.
- Compact, open-style chassis for efficient integration into control cabinets.
Technical Specifications
| Model |
1769-PA4 |
| Input Voltage |
85-265V AC / 170-265V AC (Selectable) |
| Input Frequency |
47-63 Hz |
| Output Current (5V DC) |
4.0 A |
| Output Current (24V DC) |
2.0 A |
| Power Consumption |
200 VA @ 120V AC / 240 VA @ 240V AC |
| Power Dissipation |
8 W @ 60 degC |
| Max Inrush Current |
25 A @ 132V AC |
| Wire Size |
22 to 14 AWG (Solid) |
Installation Guidelines
- Ensure the system power is disconnected before installing or removing the power supply module.
- Mount the module on a standard DIN rail or panel as per the CompactLogix system layout requirements.
- Maintain adequate clearance around the module to allow for proper ventilation and heat dissipation.
- Use appropriate wire gauges (22 to 14 AWG) for terminal connections to ensure secure electrical contact.
- Observe the power supply distance rating; do not exceed 8 modules on either side of the power supply to prevent bus power overload.
- Follow standard ESD (Electrostatic Discharge) precautions when handling the module to prevent internal component damage.
FAQ
What is the maximum number of modules this power supply can support?
The 1769-PA4 has a power supply distance rating of 8. This means you can connect up to 8 I/O modules on either side of the power supply, for a maximum total of 16 modules in the system.
Is the input voltage fixed?
No, the input voltage is switch-selectable between 85-265V AC or 170-265V AC, allowing the module to adapt to different regional power standards.
