Allen-Bradley 1771-P4R Redundant Power Supply Module
$123.00
$320.00
Description
Allen-Bradley 1771-P4R Redundant Power Supply Module
Configured for redundant 5 VDC backplane power delivery in Bulletin 1771 PLC-5 chassis systems, the Allen-Bradley 1771-P4R (1771-P4R Redundant Power Supply Module) provides direct physical/electrical execution for chassis power distribution and N+1 supply configurations. The module accepts 120 VAC input and supplies regulated 5 VDC output current to the PLC I/O backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-P4R |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 1.87 lbs |
| Operating Temp | 32 to 131 deg F (0 to 55 deg C) |
| Power Consumption | Max real input power 59 W; max apparent input power 92 VA |
| Product Type | Redundant Power Supply Module |
| Product Line | PLC-5 / Bulletin 1771 |
| Input Voltage | 120 VAC nominal |
| Input Voltage Range | 97-132 VAC |
| Input Frequency | 47-63 Hz |
| Output Voltage | 5 VDC |
| Backplane Output Current | 8 A at 5 VDC |
| N+1 Redundancy Capacity | 8 A (2 unit system); 14 A (3 unit system); 20 A (4 unit system) at 60 deg C |
| Chassis Occupancy | 1 slot |
| Fuse Rating | 1.5 A, 250 VAC slow-blow |
| Alarm Relay Rating | 250 VAC |
| Humidity | 5-95% relative humidity, non-condensing |
| Storage Temperature | -40 to 185 deg F |
PLC-5 Redundant Power Architecture
The 1771-P4R is designed for redundant power configurations within the Bulletin 1771 chassis platform. Multiple units can be connected through the redundancy cable to provide increased backplane current capacity and maintain chassis power distribution during individual supply removal or failure conditions.
The module provides regulated 5 VDC output through the 1771 backplane interface. The internal power conversion circuitry includes AC input protection, DC regulation, and alarm relay monitoring for supply status indication.
Frequently Asked Questions
Q: How many chassis slots does the 1771-P4R occupy?
A: The 1771-P4R occupies one slot in a compatible Bulletin 1771 chassis.
Q: What backplane output voltage and current are provided by the module?
A: The module provides 5 VDC backplane output with a maximum current rating of 8 A.
Q: Can multiple 1771-P4R modules be used in a redundant configuration?
A: Yes. The module supports N+1 redundancy configurations using compatible redundancy cabling, with current capacity dependent on the number of power supply units installed.
Field Installation Guidelines
Install the 1771-P4R in a compatible Bulletin 1771 chassis slot and verify the AC input wiring before energizing the system. Confirm that redundancy cable connections are properly seated when multiple power supply modules are configured together.
Route AC power wiring separately from low-level I/O signal wiring to reduce electrical noise coupling. Connect protective grounding according to industrial control panel standards. Maintain proper cable separation and secure wiring blocks for AC power and alarm relay connections.
Before startup, verify the installed supply configuration, backplane load requirements, and fuse condition. Ensure the operating environment remains within the specified temperature and humidity limits.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
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