PRODUCT INFORMATION
Product Overview
The Allen-Bradley 1771-P7 is a stand-alone AC power supply for the PLC-5 system. It delivers 16 Amperes backplane current at 5 Volts DC to compatible 1771 I/O chassis. Field connections support selectable nominal input voltages of 120 Volts AC or 220 Volts AC. Operating frequency spans from 47 to 63 Hertz.
This external supply powers chassis units lacking internal supplies via dedicated cables. Supported chassis models include 1771-A1B, 1771-A2B, 1771-A3B, 1771-A3B1, and 1771-A4B. A rear D-Shell connector routes power directly to the chassis backplane. The unit operates strictly as a stand-alone source and cannot run in parallel.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
|---|
| Backplane Output Current | 16 Amperes (at 5 Volts DC) |
|---|
| Cabling | 1771-CP1 Local, 1771-CP2 Remote 5 ft, and 1771-CP3 Remote 5 ft |
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| Category | PLCs |
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| Frequency | 47-63 Hertz |
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| Fuse | 3 Amperes, 250 Volts, Normal-Blow |
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| GTIN | 10612598003652 |
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| Input Voltage Range | 97-132 or 195-264 Volts AC |
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| Location | Stand-Alone |
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| Max Apparent Input Power | 176 VA Max |
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| Max Real Input Power | 108 Watts |
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| Max Xformer Load | 270 VA |
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| Module Type | Power Supply |
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| Nom Input Voltage | 120 or 220 Volts AC |
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| Product Line | PLC 5 |
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| Weight | 4.25 lbs (1.93 kg) |
|---|
TECHNICAL INFORMATION
Features
- Delivers up to 16 A backplane current at 5 V DC.
- Accepts dual nominal inputs of 120 V AC or 220 V AC.
- Functions across an input line frequency of 47 to 63 Hz.
- Equipped with an integrated D-Shell connector for backplane power distribution.
- Protected by an internal 3 A, 250 V normal-blow fuse.
- Mounts directly to the left side of compatible 1771 chassis.
TECHNICAL INFORMATION
Applications
- Backplane power distribution in PLC-5 control systems.
- Powering 1771 series remote I/O chassis assemblies.
- Power distribution for Mini-PLC-2/02, Mini-PLC-2/05, Mini-PLC-2/16, or Mini-PLC-2/17 processors.
TECHNICAL INFORMATION
Connections / Interfaces
- A D-Shell connector links output power to the 1771 backplane.
- The 1771-CP1 cable enables local chassis mounting within 0.32 meters.
- The 1771-CP2 cable connects remote chassis up to 1.52 meters.
- The 1771-CP3 cable connects remote chassis up to 1.68 meters.
TECHNICAL INFORMATION
Installation Guidelines
- Set the chassis configuration jumper to the N position before mounting.
- Attach the unit directly to the left side of a panel-mounted chassis.
- Maintain at least 6 inches of vertical clearance to provide convection cooling.
- Mount the unit only above or next to the chassis.
- De-energize incoming power lines before connecting or servicing backplane wiring.
- Follow standard electrostatic discharge precautions during handling.
TECHNICAL INFORMATION
Configuration Guidelines
- Operate solely in stand-alone mode without parallel power connections.
- Match incoming AC line voltage to the selected input terminals.
- Ensure total chassis backplane current does not exceed 16 Amperes.
TECHNICAL INFORMATION
Compatibility
- Compatible with 1771-A1B, 1771-A2B, 1771-A3B, 1771-A3B1, and 1771-A4B I/O chassis.
- Compatible with PLC-5 programmable controllers and 1771 adapter modules.
- Compatible with Mini-PLC-2/02, Mini-PLC-2/05, Mini-PLC-2/16, and Mini-PLC-2/17 controllers.
- Incompatible with older 1771-A1, 1771-A2, and 1771-A4 I/O chassis.
TECHNICAL INFORMATION
Lifecycle / Replacement Information
- The 1771-P7 is a legacy power supply within the 1771 hardware family.
- Replacement requires matching 1771-CP series interface cabling and physical clearance.
TECHNICAL RESOURCES
Documentation
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSCompatible with 1771-A1B, 1771-A2B, 1771-A3B, 1771-A3B1, and 1771-A4B I/O chassis. Compatible with PLC-5 programmable controllers and 1771 adapter modules. Compatible with Mini-PLC-2/02, Mini-PLC-2/05, Mini-PLC-2/16, and Mini-PLC-2/17 controllers. Incompatible with older 1771-A1, 1771-A2, and 1771-A4 I/O chassis.
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
Can the 1771-P7 power supply be wired in parallel?
No. The 1771-P7 is strictly a stand-alone power supply. Parallel operation causes memory loss and hardware damage.
Which connection cables are compatible with the 1771-P7?
The 1771-CP1 connects local chassis. The 1771-CP2 and 1771-CP3 connect remote chassis up to 5.5 feet.
What is the market reference price for the 1771-P7?
Observed market reference pricing is around $119.00 USD. This value is an indicative reference price only and is not a final quotation.
