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Allen Bradley PLC 5 1771-P1

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1771-P1

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The Allen Bradley 1771-P1 power supply unit operates within specified voltage ranges, making it ideal for various applications. Known for steady performance, it features both 120 V and 240 V input modes, ensuring reliable energy distribution for integrated systems.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1771-P1

ManufacturerAllen Bradley
Product TypePower Supply
Product LinePLC 5
Part Number1771-P1
Weight11.69 lbs (5.30 kg)
Input Range (120 V Mode)98 – 132 VAC
Input Range (240 V Mode)196 – 250 VAC
Input Draw (120 V)0.75 A nominal
Input Draw (240 V)0.38 A nominal
Power Used (Real)65 W at load
Power Demand (Apparent)90 VA max
Recommended Transformer160 VA rated
Line Frequency50 / 60 Hz
Isolation Rating2.5 kV DC for 1 s
DC Output5 V ± 5 %
Max Output Current6.5 A continuous
Power-Loss Delay~13.5 ms to CPU disable
Fuse Rating1 A (120 V) / 0.5 A (240 V) slow-blow
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The 1771-P1 power supply from Allen Bradley is designed for compatibility with PLC-5 systems. It supports dual input ranges for enhanced versatility—operating between 98 and 132 VAC in 120 V mode and 196 to 250 VAC in 240 V mode. The device has an input draw of 0.75 A nominal at 120 V and 0.38 A nominal at 240 V, which provides efficient energy consumption for operational needs.

In terms of output, the power supply provides a regulated DC output of 5 V with a tolerance of ± 5%, allowing for stable power delivery to critical components. A maximum continuous output current of 6.5 A ensures proper functioning under load. The real power consumption at load is rated at 65 W, while its apparent power demand can reach up to 90 VA.

The recommended transformer for optimal operation is rated at 160 VA, and the unit supports line frequencies of either 50 or 60 Hz. An isolation rating of 2.5 kV DC for a second ensures safety from voltage spikes. In the event of power loss, the supply has a delay of roughly 13.5 ms before the CPU becomes disabled, providing a buffer for transient changes.

Fuse ratings are specified at 1 A for 120 V operation and 0.5 A for 240 V, both using slow-blow fuses to handle inrush currents better. The Allen Bradley 1771-P1 guarantees dependable performance within the PLC 5 series, delivering essential power while maintaining operational integrity.