Allen-Bradley 1771-P7B Power Supply Module
$123.00
$320.00
Description
Allen-Bradley 1771-P7B Power Supply Module
The Allen-Bradley 1771-P7B serves as the primary 1771-P7B power supply module utilized to execute chassis power conversion and backplane energization across PLC-5 and 1771 I/O platforms.
Suffix Breakdown & Model Matrix
The supplied documentation identifies the 1771-P7B as a fixed catalog power supply module for PLC-5 and 1771 chassis systems. No configurable suffix matrix or hardware option segmentation is specified in the provided material.
Hardware Specifications
| ParameterSpecification | |
| Model | 1771-P7B |
| Brand | Allen-Bradley |
| Product Series | PLC-5 / 1771 I/O |
| Product Type | Power supply module |
| Input Voltage | 100-240 VAC |
| Input Frequency | 47-63 Hz |
| Input Current | 2.0 A at 120 VAC, 1.0 A at 220 VAC |
| Output Voltage | 24 VDC, 5 VDC |
| Output Current | 10-16 A |
| Power Rating | 240-384 W |
| Efficiency | >85 % |
| Ripple and Noise | <200 mVpp |
| Protection Features | Over-voltage, over-current, short-circuit |
| Mounting Method | DIN rail installation |
| Enclosure Rating | IP20 to IP67 depending on assembly configuration |
| Compatibility | PLC-5, 1771 I/O chassis, Mini-PLC-2 systems |
| Supported Chassis | 1771-A1B, A2B, A3B, A3B1, A4B |
| Operating Temp | -20 to 60 deg C |
| Storage Temp | -40 to 85 deg C |
| Humidity | 5-95 % non-condensing |
| Dimensions | 127 mm x 76 mm x 23 mm |
| Weight | 3.99 lbs |
Backplane Bus Power Distribution Characteristics
The 1771-P7B distributes regulated DC power directly into the PLC-5 and 1771 backplane structure for processor, adapter, and I/O module energization. Internal regulation stages maintain output stability during fluctuating AC input conditions across the specified universal voltage range.
The module supports deterministic backplane power delivery required by PLC-5 rack communication timing and distributed I/O synchronization. Output ripple below 200 mVpp reduces propagation of switching noise into analogue and digital chassis circuitry.
Integrated protection circuitry monitors over-current, over-voltage, and short-circuit conditions within the supply stage. Fault handling limits excessive thermal stress on connected chassis assemblies and attached field-side modules.
Frequently Asked Questions
Q: Can the 1771-P7B be installed while the PLC chassis remains energized?
A: The provided specifications do not define online insertion capability. Installation and removal procedures should therefore be performed with chassis power isolated.
Q: Which PLC chassis assemblies are supported by the 1771-P7B?
A: The module is specified for use with 1771-A1B, A2B, A3B, A3B1, and A4B chassis assemblies together with PLC-5 and compatible adapter modules.
Q: What protection mechanisms are integrated into the power supply stage?
A: The module includes over-voltage, over-current, and short-circuit protection functions to limit abnormal electrical loading conditions.
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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