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Allen Bradley 1774 PLCs and Modules 1774-P1

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1774-P1

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The 1774-P1 power supply module from Allen Bradley is designed for the 1774 PLCs and Modules series. This unit supports dual nominal input voltages of 120 or 220 VAC, with a range of 85 to 132 VAC for 120V and 170 to 265 VAC for 220V applications. It has a maximum inrush current of 20 A and provides a 5 VDC output at 2 A and a 24 VDC output at 0.46 A.

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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 1774-P1

ManufacturerAllen Bradley
Product TypePower Supply Module
Product Line1774 PLCs and Modules
Part Number1774-P1
Weight35.31 lbs (16.02 kg)
Nominal Input Voltage120/220 VAC
Input Voltage Range85 to 132 VAC for 120V nominal / 170 to 265 VAC for 220V nominal
Input Frequency47 to 63 Hz
Input Power, Maximum Real42 W
Input Power, Maximum Apparent135 VA
Inrush Current, Maximum20 A
Output Voltage (Backplane)5 VDC
Output Current (5 VDC)2 A
Output Current (24 VDC)0.46 A
Hold-Up Time20 ms minimum at full load
Fuse Protection1.5 A, slow-blow type
Isolation Voltage1800 VAC for 1 minute
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The Allen Bradley 1774-P1 is a power supply module utilized within the 1774 PLCs and Modules series. It operates on nominal input voltages of either 120 or 220 VAC, catering to various applications. Voltage acceptance ranges from 85 to 132 VAC for its 120V nominal configuration, and 170 to 265 VAC for the 220V nominal configuration. This module functions effectively across an input frequency spectrum of 47 to 63 Hz, ensuring compatibility with diverse power sources.

Maximum real input power is rated at 42 watts, while apparent power can reach up to 135 VA. This capability makes it suitable for a range of operational demands. The inrush current peaks at 20 A, providing additional support during startup phases.

On the output side, the module delivers a stable 5 VDC voltage to the backplane at an output current of 2 A. Additionally, a 24 VDC output is available, supporting a maximum current of 0.46 A. The system design includes a hold-up time of 20 ms at full load, allowing continued operation during brief power interruptions.

For protection purposes, the module is equipped with a slow-blow fuse rated at 1.5 A. This feature ensures the circuit remains operational during normal conditions while preventing overcurrent situations. The isolation voltage has been rated at 1800 VAC for one minute, reinforcing safety standards and providing reliable separation from high-voltage circuits.