Allen-Bradley 1746-P7 SLC 500 Power Supply Module
$123.00
$320.00
Description
Allen-Bradley 1746-P7 SLC 500 Power Supply Module
The Allen-Bradley 1746-P7, also cataloged as the 1746-P7 Power Supply Module, operates as a regulated DC power conversion unit for SLC 500 chassis backplane distribution, converting 10-30 VDC input into stabilized 5 VDC and 24 VDC rails for processor and I/O module operation.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1746-P7 |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 2.19 lbs |
| Dimensions | SLC 500 standard module format (~5 x 2 x 6 in) |
| Operating Temp | 0 to 60 deg C |
| Power Consumption | 50 to 75 W input power |
| Input Voltage | 10-30 VDC |
| Output Voltage | 5 VDC, 24 VDC |
| Output Current | 5 VDC: up to 3.6 A / 24 VDC: up to 0.87 A |
| Inrush Current | 20 A max |
| Protection | 1746-F1 fuse or equivalent |
Backplane Power Conversion Characteristics
The 1746-P7 implements dual-mode input adaptation for 12 VDC and 24 VDC source configurations, adjusting internal switching regulation to maintain backplane stability under varying input headroom conditions. Output regulation maintains fixed 5 VDC logic rail and 24 VDC auxiliary rail for SLC 500 module bus operation.
Hold-up timing is dependent on input level and load condition, with controlled decay behavior during input dropout to preserve CPU execution state across transient disturbances. Backplane current delivery is limited to defined internal current capacity thresholds to prevent bus overstress during module population changes.
Frequently Asked Questions
Q: How does the module behave during input voltage drop below 10 VDC?
A: The internal hold-up circuit maintains regulated output for a limited duration depending on load, after which backplane rails decay in a controlled shutdown sequence.
Q: Can the 1746-P7 be used interchangeably with AC-input SLC 500 power supplies?
A: No. The 1746-P7 is a DC-input architecture (10-30 VDC) and is not compatible with AC input supply modules without external conversion.
Q: What limits backplane current delivery on the 5 VDC rail?
A: The internal current capacity limiter restricts 5 VDC output based on input condition, with maximum output defined by 12 VDC or 24 VDC operating mode.
Field Installation Guidelines
-
Install only in designated SLC 500 chassis power slot.
-
Verify DC input polarity and voltage range before energization (10-30 VDC).
-
Maintain separation between DC input wiring and low-level signal cabling.
-
Ensure chassis grounding continuity before module insertion.
-
Do not exceed specified fuse rating (1746-F1 or equivalent).
-
Confirm full seating of backplane connector prior to applying input power.
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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