Allen-Bradley 1756-PB72 DC Power Supply 24V DC for ControlLogix Chassis
Allen-Bradley 1756-PB72
ControlLogix DC Power Supply
24V DC Input
Place of Origin:
USA
Brand Name:
Allen-Bradley
Allen-Bradley 1756-PB72
,ControlLogix DC Power Supply
,24V DC Input
Powering the ControlLogix Chassis
The 1756-PB72 converts its supplied DC input into the backplane power rails used by compatible ControlLogix chassis modules.
Before sourcing a replacement, confirm the installed catalog number, chassis type, input supply and required backplane capacity.
Technical Specifications
Backplane Output Rails
Additional Ratings
Mounting Position
Install the supply at the left end of a compatible ControlLogix chassis. Its connector mates directly with the backplane; make sure the unit is correctly seated and the chassis assembly is secure.
DC Wiring
Use a 24V DC source within the 19–32V DC operating range. Isolate power first, identify positive and negative conductors, connect to the corresponding input terminals and verify polarity before energizing.
Cable & Terminals
Use solid or stranded copper conductors rated for at least 90°C, sized at 14 AWG (2.5 mm²), within the specified insulation limits. Terminal torque is 0.565 N·m (5 lb-in); avoid overtightening.
Final Checks
Confirm chassis and module compatibility, input polarity, terminal connections and supply voltage before restoring power. Follow site electrical safety procedures and keep the equipment within its rated environment.
Application & Failure Scenarios
When is this part searched for?
Typical sourcing situations include chassis power loss, a rack that will not power up, suspected power-supply failure, or planned maintenance requiring an exact catalog-number replacement.
What can downtime affect?
An interrupted chassis supply may affect controller and I/O operation, potentially stopping dependent machinery or production processes.
Before replacing the unit
Check the incoming DC source, wiring, chassis connections and installed modules. A rack fault does not automatically mean the power supply has failed.
Replacement & Compatibility
Match the exact 1756-PB72 catalog number and verify the chassis, input voltage, module load and installed configuration. This model is not specified for a redundant power-supply configuration. Similar-looking part numbers are not automatically interchangeable.
Request a Quotation
Send your part and delivery details to AMIKON for availability, pricing and order options.
Part Number
Quantity
Destination
Required Date
Machine/System Model
Delivery & Warranty
Inspection or testing scope is confirmed with the quotation. Item condition and procedures are not assumed unless specified in writing.
Packaging, dispatch schedule and estimated delivery are confirmed for each order.
Report damaged, incorrect or non-operational items promptly with order details and supporting evidence. Return authorization and remedies follow the agreed terms.
12 months, subject to quotation terms. Coverage, exclusions and remedies for verified defects are governed by the order agreement.
Frequently Asked Questions
1. What input voltage does the 1756-PB72 require?
The nominal input is 24V DC, with a published operating range of 19–32V DC. Verify the incoming supply and polarity before commissioning.
2. What output rails are provided?
The listed outputs are 5.1V DC at 10.0A, 3.3V DC at 4.0A, 1.2V DC at 1.5A and 24V DC at 2.8A. Maximum total output power is 75W.
3. Does the 1756-PB72 support redundant power supplies?
No. This model is not specified for a redundant power-supply configuration. Confirm the required system architecture before choosing an alternative.
4. What details should I provide for a replacement quotation?
Provide the part number, quantity, destination, required date and machine/system model. Nameplate information and a description of the fault can also help identify the correct item.
Related Models & Industrial Parts Reference
Reference models for broader industrial parts sourcing. These items are not confirmed compatible replacements for the 1756-PB72. Confirm each model and application independently.
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