Product Details
Product Description
The Allen Bradley 1771-P4R is a redundant power supply module designed for the PLC-5 system. It ensures reliable operation by supporting N+1 redundancy configurations, making it suitable for critical industrial automation environments where uninterrupted power is essential. Compact and efficient, this module provides stable 5 VDC output with high current capacity and integrated alarm relay functionality.
Technical Specifications
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Manufacturer: Allen Bradley
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Category: PLCs
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Product Line: PLC-5
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Part Number: 1771-P4R
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Weight: 2.00 lbs (0.91 kg)
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Input Voltage Range: 97–132 VAC
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Nominal Input Voltage: 120 VAC
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Input Voltage Frequency: 47–63 Hz
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Module Type: Redundant Power Supply
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Output Voltage: 5 VDC
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Backplane Output Current: 8 Amperes (at 5 VDC)
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Maximum Output Current (N+1 Redundancy): 8A (2-unit system), 14A (3-unit system), 20A (4-unit system)
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Alarm Relay Rating: 250 VAC
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Wiring Block AC Power: A-B PN 941274-05 (Wago PN 231-205/000-008)
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Wiring Block Relay: A-B PN 941274-03 (Wago PN 231-203/000-008)
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Operating Temperature: 32 to 131 °F (0 to 55 °C)
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Storage Temperature: -40 to 185 °F (-40 to 85 °C)
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Relative Humidity: 5–95 % non-condensing
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Max Real Input Power: 59 W
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Max Apparent Input Power: 92 VA
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Max Transformer Load: 148 VA
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Fuse: 1.5 A, 250 V, slow-blow type
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Cabling: Redundancy cable for P4R (included)
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Location: 1771 Chassis, 1 Slot
Application Scenarios
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Designed for PLC-5 systems requiring redundant power supply for critical operations
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Ideal for manufacturing, process control, and continuous operation environments
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Provides fault tolerance and system reliability in multi-unit redundancy setups
FAQ
Q: Can the 1771-P4R operate independently without redundancy? A: Yes, it can function as a single power supply, but its primary design is for redundant configurations.
Q: What is the maximum redundancy supported? A: Up to four units can be paralleled, providing a maximum of 20A output at 60 °C.
Q: Is the redundancy cable included? A: Yes, the redundancy cable is supplied with the module.
Comparison with Similar Models
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1771-P4R: Redundant power supply, supports N+1 configurations, 5 VDC output
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1771-P7: Standard power supply, no redundancy support, lower current capacity
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1771-P4S: Single power supply version, suitable for non-critical applications
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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