Product Summary
The 1768-PA3 is a Rockwell Automation CompactLogix power supply module. It delivers reliable backplane power to your control system. This module accepts dual-input voltages for global flexibility. Use this unit exclusively with 1768 controllers and 1769 I/O.
Technical Procurement Guide for the 1768-PA3
Understanding Your Power Requirements
You must match the power supply to your system load. The 1768-PA3 provides 1.4 Amps at 24 Volts DC on the backplane. This current energizes all connected controller and I/O modules. Your system must not exceed this current limit.
Input Voltage and Frequency Specifications
This module operates on a wide input range. It accepts 85 to 265V AC at 47 to 63 Hz. It also accepts 108 to 132V DC. This dual-input capability simplifies global inventory management. You can use one unit for many different plant voltages.
Key Performance and Efficiency Data
The unit achieves a typical efficiency of 75%. Its maximum input power is 120 VA or 120 W. The maximum power dissipation reaches 30 W. These specs help you calculate your panel’s thermal load accurately.
Overcurrent Protection and Safety
The module includes internal overcurrent protection. A non-replaceable fuse is soldered in place. You must provide external overcurrent protection as well. The recommended external breaker is 4 to 6 Amps. The maximum user-supplied protection is 15 Amps.
Proper Installation Guidelines
You must install a 1768 controller in the same bank. Never install a 1769 power supply on a 1768 backplane. The module mounts on a DIN rail or a panel. Use 14 to 22 AWG copper wire for connections. Ensure the wire insulation is rated for 167 degrees Fahrenheit.
Compatibility and System Configuration
This power supply works with specific 1768 controllers. Compatible models include the 1768-L43, L43S, L45, and L45S. You can attach up to eight 1769 Compact I/O modules. Always check the power supply distance rating for each module. This rating ensures every module receives enough power.
Logistics & Standard Packaging Details
- One Allen-Bradley 1768-PA3 Power Supply Module
- Product is sold as an individual unit
- Standard shipping dimensions are 8 x 8 x 5 inches
- Shipping weight is approximately 2 lbs
- Express delivery shipping is available via FedEx, UPS, and DHL
