Product Introduction
The Allen-Bradley 1769-PA2 is a 1769 CompactLogix I/O power supply designed to power expansion I/O banks in industrial automation systems. As part of the CompactLogix platform, this AC power supply module delivers stable DC power to connected modules on both sides. With its input voltage range of 85-265VAC and frequency range of 47-63 Hz, the 1769-PA2 handles diverse global power standards. Its internal fuse protection safeguards against line transients and short circuits, reducing the risk of system failures.
Technical Specifications
The Allen-Bradley 1769-PA2 offers the following key parameters:
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Current Capacity: 2.0A at 5V DC and 0.8A at 24V DC
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Power Consumption: 100VA at 120V AC; 130VA at 240V AC
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Power Dissipation: 8W at 60°C (140°F)
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Inrush Current (max): 25A at 132V AC
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Input Frequency: 47-63 Hz
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Input Voltage: 85-265VAC
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Fuse Type: Littelfuse 02153.15MXP or Wickmann 19195-3.15A
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Wire Size: 14 AWG solid copper rated 90°C
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Dimensions (HxWxD): 118 x 70 x 87 mm (4.65 x 2.76 x 3.43 in.)
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Weight: 525 g (1.16 lb)
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Certifications: c-UL-us, CE, C-Tick
These specifications ensure the 1769-PA2 integrates seamlessly into CompactLogix systems while delivering reliable power in demanding industrial environments.
Installation & Setup Guidance
When installing the Allen-Bradley 1769-PA2, maintain a minimum 50 mm clearance around the module for proper ventilation. Mount the power supply on a DIN rail or directly onto a mounting plate using the integrated tabs. Use 14 AWG solid copper wire rated at 90°C for all connections, and keep leads as short as possible. Ground the module according to local electrical codes. The 1769-PA2 is an open-style unit; place it in a protective enclosure if the environment contains corrosive gases or contaminants. Ensure the ambient temperature does not exceed 60°C to prevent overheating.
Maintenance & Reliability
The Allen-Bradley 1769-PA2 incorporates a replaceable internal fuse (Littelfuse 02153.15MXP or Wickmann 19195-3.15A) that protects against abnormal line conditions. Routine inspection of the fuse and wire connections can prevent unexpected downtime. Avoid exposing the module to static discharge, UV radiation, or debris during installation and operation. If the power supply runs in high temperature areas, consider forced air cooling or air conditioning. Regular cleaning of ventilation openings ensures long-term reliability. The 1769-PA2's robust design minimizes maintenance needs, contributing to lower total cost of ownership.
Buying Guide & Selection Advice
Before purchasing the Allen-Bradley 1769-PA2, verify the input voltage available at your facility (85-265VAC). Confirm that the power supply distance rating of 8 modules on each side (16 total) matches your system layout. Check the current requirements of your I/O modules to ensure the 2.0A at 5V and 0.8A at 24V are sufficient. For replacement, note the fuse type and wire size. UBEST Automation stocks genuine Allen-Bradley 1769-PA2 units with fast shipping and full factory warranty. Visit ubest101.myshopify.com for competitive pricing and bulk discounts.