Product Description
Allen-Bradley 1771-P4R Redundant Power Supply
The Allen-Bradley 1771-P4R is a redundant power supply module designed for use in Allen-Bradley PLC-5 I/O chassis. It provides a stable 5V DC output and supports N+1 redundancy for enhanced system reliability.
Technical Specifications
Input Characteristics
| Attribute | 1771-P4R | 1771-P6R |
|---|---|---|
| Input Voltage | 120V AC | 220V AC |
| Input Voltage Range | 97–132V AC RMS | 194–264V AC RMS |
| Frequency | 47–63 Hz | 47–63 Hz |
| Fuse | 1.5A, 250V Slow-Blow | 1.5A, 250V Slow-Blow |
Output Characteristics
| Attribute | Specification |
|---|---|
| Output Voltage | 5V DC |
| Output Current | 8A |
| Maximum System Output Current @ 60°C (N+1 Redundancy) |
8A (2-unit system) 14A (3-unit system) 20A (4-unit system) |
Physical & Wiring Specifications
| Attribute | Specification |
|---|---|
| Size | 1 I/O slot per module |
| Weight | 2 lbs (0.84 kg) |
| Wire Size | 14 AWG maximum (single wire only) |
| Wire Category | 21 |
| Wiring Blocks |
AC Power: A-B Part No. 941274-05 (Wago PN 231-205/000-008) Relay: A-B Part No. 941274-03 (Wago PN 231-203/000-008) |
Environmental Specifications
| Attribute | Specification |
|---|---|
| Operating Temperature | 0 to 60°C (32 to 140°F) |
| Storage Temperature | -40 to 85°C (-40 to 185°F) |
| Relative Humidity | 5 to 95% (non-condensing) |
Alarm Relay Rating
| Attribute | Specification |
|---|---|
| Alarm Relay Voltage | 250V AC |
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