PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-P6S is an auxiliary Power Supply engineered for PLC-5 series 1771 I/O chassis systems. It operates with a nominal input rating of 220V AC across an input range of 194 to 264V AC. The module supplies 8 A of backplane output current at 5V DC to the chassis. Maximum real input power reaches 56 W, while apparent input power peaks at 89 VA. It occupies one slot and mounts directly on the side plate of the 1771 chassis.
The 1771-P6S includes backplane undervoltage protection to safeguard system data integrity. When line voltage falls below operating limits, the unit issues a backplane shutdown signal. The signal resets only after input voltage returns to nominal levels. Internal jumpers near the rear edge connectors permit selection between local and remote voltage sensing. Two compatible power modules can run in parallel using a 1771-CT cable.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Category | PLCs |
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| Product Line | PLC 5 |
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| UPC | 662468206075 |
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| Weight | 1.88 lbs (0.85 kg) |
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| Module Type | Power Supply |
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| Nom Input Voltage | 220 Volts AC |
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| Input Voltage Range | 194-264 Volts AC |
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| Max Real Input Power | 56 Watts |
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| Max Apparent Input Power | 89 VA |
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| Max Xformer Load | 140 VA |
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| Backplane Output Current | 8 Amperes (at 5 Volts DC) |
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| Frequency | 47-63 Hertz |
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| Fuse | 1.5 Amperes, 250 Volts, slow-blow |
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| Cabling | 1771-CT |
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| Paralleled | -P6S, -LWP, -LZP, -LXP |
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| Location | 1771 Chassis, 1 Slot |
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TECHNICAL INFORMATION
Features
- Delivers 8 A backplane current at 5V DC.
- Operates on 220V AC nominal input power spanning 194 to 264V AC.
- Integrates a 1.5 A 250V slow-blow fuse for internal circuit protection.
- Generates an automated backplane shutdown signal during low line-voltage conditions.
- Supports local or remote sensing configurations via rear board jumpers.
- Enables parallel operation across chassis using a 1771-CT cable.
TECHNICAL INFORMATION
Applications
- Provides auxiliary DC backplane power for Allen-Bradley 1771 I/O chassis.
- Supports dual-power paralleled architectures in industrial PLC-5 automation racks.
TECHNICAL INFORMATION
Connections / Interfaces
- Includes one 5-position terminal block for field power wiring.
- Features gold-plated edge connectors for direct backplane mating.
- Connects to sibling modules using a 1771-CT paralleling cable.
TECHNICAL INFORMATION
Installation Guidelines
- Mount the supply into one chassis slot on the 1771 I/O side plate.
- Set jumper pins near the rear edge connectors for remote or local voltage sensing.
- Install the 1771-CT communication cable before operating two supply modules in parallel.
TECHNICAL INFORMATION
Configuration Guidelines
- Configure module jumpers to match chassis voltage sensing requirements.
- Ensure both supplies share matched specifications prior to paralleled operation.
TECHNICAL INFORMATION
Compatibility
- Compatible with Allen-Bradley 1771 I/O chassis assemblies.
- Supports paralleled operation with 1771-P6S, 1771-LWP, 1771-LZP, and 1771-LXP modules.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with Allen-Bradley 1771 I/O chassis assemblies. Supports paralleled operation with 1771-P6S, 1771-LWP, 1771-LZP, and 1771-LXP modules.
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 input voltage does the Allen-Bradley 1771-P6S require?
The 1771-P6S requires a nominal 220V AC input. Its acceptable operating range spans 194 to 264V AC RMS at 47 to 63 Hz.
How much output current does the 1771-P6S provide to the chassis?
The unit supplies up to 8 A of DC current at 5V DC across the 1771 chassis backplane.
Can two 1771-P6S power supplies operate together in one chassis?
Yes, two supplies can operate in parallel. This configuration requires a 1771-CT paralleling cable between modules.
What is the reference price for the 1771-P6S power supply?
Observed market reference pricing is approximately $149 USD for refurbished units. This is an indicative market reference only and not a final quotation.
