- Accepts an 18 to 32 VDC input for standard ControlLogix chassis power
- Supplies the documented 5.1 V, 3.3 V, 1.2 V and 24 V backplane rails
- Mounts at the left side of supported 1756-A4 through 1756-A17 chassis
Allen-Bradley 1756-PB72 is a ControlLogix 24 VDC chassis power supply designed to energize a supported 1756 chassis from a nominal 24 VDC source.
It provides up to 75 W of backplane power, so selection depends on the combined rail demand of every controller, communication and I/O module in the chassis.
Before installation or replacement, verify the power-supply Series, chassis Series, input polarity, branch protection, conductor rating, grounding and calculated backplane load.
Availability, condition, price, and shipping time for 1756-PB72 are confirmed during quotation.
Allen-Bradley 1756-PB72 ControlLogix 24 VDC Chassis Power Supply Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Install the supply at the left side of the supported ControlLogix chassis
- Match the 1756-PB72 Series with the chassis Series and project hardware record
- Recalculate every backplane rail before adding or moving chassis modules
- Use a protected 18 to 32 VDC source with correct polarity and protective earth
- Use 2.5 mm² (14 AWG) copper conductors rated at least 90°C
- Tighten the input terminals to the documented 0.565 N·m torque
- Check loaded input voltage at the supply rather than only at the source
- Compare the chassis power calculation with each backplane rail limit
- Inspect supply seating and chassis connectors before replacing installed modules
- 24 VDC-powered ControlLogix chassis in industrial control cabinets
- ControlLogix machine-control chassis containing controller, network and I/O modules
- Distributed ControlLogix stations where a DC plant supply feeds the local chassis