1771-P7 Allen-Bradley PLC-5 Power Supply
$123.00
$320.00
Description
Allen-Bradley 1771-P7/B PLC-5 AC Power Supply Module
The Allen-Bradley 1771-P7/B, also cataloged as the 1771-P7 AC Power Supply Module, operates as a dedicated hardware component for regulated backplane power distribution within PLC-5 and 1771 I/O chassis platforms. The module converts 120 VAC input into 5 VDC output for processor, I/O, and communication modules through the chassis backplane.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1771-P7/B |
| Brand | Allen-Bradley |
| Origin | United States |
| Weight | 2 lbs |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 56 W real input power; 16 W power dissipation |
| Input Voltage | 120 VAC nominal; 97-132 VAC range |
| Input Frequency | 47-63 Hz |
| Input Current | 1.0 A at 120 VAC |
| Apparent Input Power | 89 VA |
| Transformer Load | 140 VA |
| Output Voltage | 5 VDC regulated |
| Output Current | Up to 8 A |
| Isolation Voltage | 1000 VAC withstand for 60 s |
| Fuse Rating | 2 A, 250 V slow-blow |
| Humidity Range | 5-95% non-condensing |
| Shock Rating | 30 g peak operating; 50 g peak non-operating |
| Vibration Rating | 2 g at 10-500 Hz |
| Enclosure Type | Open style |
EtherNet/IP and PLC-5 Backplane Power Characteristics
The 1771-P7/B provides regulated 5 VDC power directly to the 1771 chassis backplane. The module occupies one chassis slot and supports power distribution to PLC-5 processors, I/O modules, and communication interface modules. The AC input stage accepts 120 VAC sources and maintains the DC output required by connected chassis hardware.
The power supply includes DC output and power OK status indicators for local hardware verification. A shutdown signal is generated when AC input voltage decreases below the operating threshold, allowing the control system to execute valid memory protection procedures.
The module supports parallel connection using the 1771-CT cable to increase available current capacity or support redundant power configurations. Proper backplane loading calculation is required when combining multiple power sources.
Frequently Asked Questions
Q: What backplane voltage does the Allen-Bradley 1771-P7/B provide?
A: The module provides regulated 5 VDC output to the 1771 I/O chassis backplane for connected PLC-5 system modules.
Q: Can the 1771-P7/B operate with input voltages other than 120 VAC?
A: The specified operating input range is 97-132 VAC at 47-63 Hz. Operation outside this range is not specified.
Q: Does the 1771-P7/B support parallel operation?
A: Yes. The module can be paralleled with other compatible supplies using a 1771-CT cable for increased current capacity or redundant power arrangements.
Field Installation Guidelines
Install the 1771-P7/B in an available slot of a compatible 1771 I/O chassis and verify chassis power requirements before energizing the system. Connect the AC input wiring through the supplied terminal block according to the applicable electrical installation standards.
Maintain separation between AC power wiring and low-level signal cables to reduce electrical interference. Connect cable shields using standard industrial grounding practices, with grounding points selected according to system cabinet design. Verify that the chassis backplane load does not exceed the available 5 VDC supply capacity before adding additional modules.
When using parallel power supply configurations, install approved interconnection cables and confirm correct wiring polarity before startup. Ensure adequate cabinet ventilation and maintain the specified operating environment.
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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