PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-PS7 is a stand-alone AC power supply module designed for PLC-5 systems. It operates on nominal 120V AC or 220V AC input lines. The module delivers a regulated backplane output of 5V DC at 16A. It also supplies multiple auxiliary user outputs for system components. Total power output must not exceed 100W across backplane and user loads.
This auxiliary supply can mount directly to an I/O chassis or install separately on a panel. A D-sub connector provides power delivery to the chassis backplane. Remote installation requires an optional 1771-PSCC cable measuring 5.5 feet in length. Natural convection cooling requires placement adjacent to or above the chassis. A front configuration jumper determines stand-alone operation.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Category | PLCs |
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| Product Line | PLC 5 |
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| UPC | 612598003471 |
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| Weight | 6.00 lbs (2.72 kg) |
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| Module Type | Power Supply |
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| Nom Input Voltage | 120 or 220 Volts AC |
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| Input Voltage Range | 97-132 or 195-264 Volts AC |
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| Max Real Input Power | 171 Watts |
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| Max Apparent Input Power | 257 VA |
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| Max Xformer Load | 427 VA |
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| User Output Current | 8 Amps (at 5 V dc), 2 Amps (at +/- 15 V dc), 2.5 Amps (at 24 V dc) |
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| Backplane Output Current | 16 Amperes (at 5 Volts DC) |
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| Frequency | 47-63 Hertz |
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| Fuse | 3 Amperes, 250 Volts, Normal-Blow |
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| Cabling | 1771-PSCC Remote 5.5 ft |
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| Location | Stand-Alone |
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TECHNICAL INFORMATION
Features
- Delivers 16A at 5V DC directly to the 1771 chassis backplane.
- Accepts dual nominal inputs of 120V AC and 220V AC.
- Provides auxiliary DC outputs for 5V, +/-15V, and 24V user devices.
- Supports direct chassis attachment or stand-alone panel mounting.
- Features a replaceable 3A, 250V normal-blow protective fuse.
TECHNICAL INFORMATION
Applications
- PLC-5 programmable controller systems requiring external backplane power.
- Expansion 1771 I/O chassis assemblies in industrial automation panels.
TECHNICAL INFORMATION
Connections / Interfaces
- D-sub connector supplies power directly to the chassis backplane.
- Compatible with 1771-PSCC 5.5-foot remote cable for separate mounting.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the I/O chassis securely before connecting the external power supply.
- Align mounting plate taper pins with supply receiving holes during attachment.
- Push the module firmly until the connector fully seats into the chassis receptacle.
- Mount the unit adjacent to or above the chassis for proper convection cooling.
TECHNICAL INFORMATION
Configuration Guidelines
- Set the internal configuration jumper to the N position for stand-alone operation.
- Limit backplane load to 80W and user load to 65W.
- Ensure combined system power consumption remains under 100W.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 I/O chassis and PLC-5 programmable controllers.
- Uses 1771-PSCC cable for remote stand-alone chassis connection.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 I/O chassis and PLC-5 programmable controllers. Uses 1771-PSCC cable for remote stand-alone chassis connection.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What are the input power ratings for the Allen-Bradley 1771-PS7?
The 1771-PS7 operates on 97-132V AC or 195-264V AC at 47-63 Hz. Nominal currents are 2A and 1A.
What are the output limits of the 1771-PS7 power supply?
It provides 16A at 5V DC backplane power. Total combined backplane and user power must not exceed 100W.
How should the 1771-PS7 jumper be configured?
Set the configuration jumper to the N position for stand-alone operation before applying power.
What is the reference market price for the 1771-PS7?
Observed market pricing is approximately $193 for refurbished units. These figures are indicative market reference pricing only and are not a final quotation.
