1756-PA72 Allen-Bradley ControlLogix AC Power Supply
Allen-Bradley 1756-PA72
ControlLogix AC Power Supply
85–265V AC Input
Place of Origin:
USA
Brand Name:
Allen-Bradley
Allen-Bradley 1756-PA72
,ControlLogix AC Power Supply
,85–265V AC Input
1756-PA72 Allen-Bradley ControlLogix AC Power Supply
The 1756-PA72 is an AC power supply for compatible Allen-Bradley ControlLogix chassis, providing DC power to the chassis backplane.
Application & Failure Scenarios
Used to supply the backplane of a compatible 1756 ControlLogix chassis.
A suspected power-supply fault, an unpowered chassis or a rack that fails to resume operation after a power-related issue.
A failed supply can interrupt power to the affected chassis and its installed modules, potentially stopping the associated control process.
Technical Specifications
| Manufacturer | Allen-Bradley (Rockwell Automation) |
|---|---|
| Catalog Number | 1756-PA72 |
| Product Type | ControlLogix AC Power Supply |
| Input Voltage Range | 85–265 V AC |
| Nominal Input Voltage | 120 V / 240 V AC |
| Input Frequency | 47–63 Hz |
| Backplane Output Rails | 1.2 V DC, 3.3 V DC, 5 V DC and 24 V DC |
| Output Current Ratings | 1.5 A at 1.2 V DC; 4 A at 3.3 V DC; 10 A at 5 V DC; 2.8 A at 24 V DC |
| Maximum Output Power | 75 W at 0–60 °C for the 1756-PA72/C |
Compatibility & Technical Documents
Chassis compatibility: The manufacturer's installation instructions list the 1756-PA72/C for 1756-A4, 1756-A7, 1756-A10, 1756-A13 and 1756-A17 chassis in series A, B and C.
Identification: Confirm the complete catalog number and series shown on the installed unit's label before ordering.
Technical documents: Rockwell Automation publication 1756-TD005, ControlLogix Power Supplies Technical Data; publication 1756-IN619, ControlLogix Power Supply Installation Instructions.
Documentation keyword: 1756-PA72 pdf/manual/datasheet.
Installation
Install the power supply at the designated left end of a compatible 1756 chassis. Confirm the chassis series and supply catalog number before fitting.
Before installation or removal, switch off and isolate the AC power source. Verify that power is disconnected before touching wiring or removing the supply. Connect the AC input wires to the designated terminals according to the unit's wiring markings and installation instructions. Secure the supply and check all connections before restoring power.
After energizing, check the power-supply status and chassis operation. Installation and electrical work must be performed by qualified personnel.
Supply, Inspection & Warranty
Inspection: Part-number and external-condition checks; functional testing depends on product condition and available test facilities.
Packaging: Protective packaging appropriate for industrial transport.
Warranty: Coverage and duration follow the terms confirmed in the quotation or order.
DOA / returns: Report faults promptly with the order reference, product label and supporting evidence. Return authorization and the applicable resolution follow the agreed order terms.
Contact AMIKON
Contact
Miya Zheng
Send your part number and order requirements for a quotation and availability check.
Request a Quotation
Please include these details in your inquiry.
| Part Number | 1756-PA72 |
| Quantity | Required quantity |
| Destination | Delivery city and country |
| Required Date | Target delivery date |
| Machine/System Model | Installed system or chassis model |
Email: sales@amikon.cn
Frequently Asked Questions
1. What is the 1756-PA72 used for?
It supplies DC power to the backplane of a compatible Allen-Bradley ControlLogix 1756 chassis.
2. What AC input voltage does the 1756-PA72 support?
The published input range is 85–265 V AC, with a nominal input of 120 V / 240 V AC and a frequency range of 47–63 Hz.
3. How do I confirm chassis compatibility?
Check the supply's complete catalog number and series against the chassis catalog number and series in the manufacturer's compatibility instructions.
4. What should I check if the chassis loses power?
Have qualified personnel inspect the incoming AC supply, connections, chassis condition and supply status after isolating power and confirming the circuit is de-energized.
5. What details are needed for a quotation?
Provide the part number, quantity, destination, required date and machine/system model. The unit's series information is also helpful when available.
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