Power Your ControlLogix System with the Allen-Bradley 1756-PB75 DC Power Supply
The 1756-PB75 from Allen-Bradley delivers robust and reliable power for your ControlLogix chassis. This rack-mounted unit converts a 24VDC input into stable power for all your system’s modules. It provides a total output of 75 watts to keep your automation system running smoothly.
Core Technical Specifications
- Manufacturer: Allen-Bradley / Rockwell Automation
- Input Voltage Range: 18-32 V DC with a nominal 24 V DC
- Maximum Output Power: 75 W at 0 to +60 °C
- Output Current Capacity: 13 A at 5.1 V DC, 4 A at 3.3 V DC, 2.8 A at 24 V DC, 1.5 A at 1.2 V DC
- Input Power Rating: 95 W with a maximum inrush current of 30 A
- Hold-up Time: 40 ms at 24 V DC to maintain operation during brief power dips
- Isolation Rating: Reinforced insulation, tested at 3500 V DC for 60 seconds
Physical Dimensions & Installation
- Dimensions: 14.0 x 11.2 x 14.5 cm (5.51 x 4.41 x 5.71 inches)
- Product Weight: 0.95 kg (2.10 pounds)
- Mounting Location: Must be installed in the left-most slot of the 1756 chassis
- Recommended Wire: 2.5 mm² or 14 AWG copper wire
- Chassis Compatibility: Series B and C, including models 1756-A4, A7, A10, A13, and A17
Environmental & Durability Ratings
- Operating Temperature: 0 to +60 °C (32 to 140 °F)
- Relative Humidity: 5% to 95% without condensation
- Operational Shock: Withstands up to 30G of impact force
- Vibration Resistance: 2.0G from 10 to 500 Hz
- Enclosure Type: Open-style for mounting in a protected chassis
Packaging & Shipping Information
- Package Includes: One 1756-PB75 power supply module
- Shipping Methods: We ship globally via FedEx, UPS, and DHL
- Warranty: This product comes with a 12-month warranty covering defects
Frequently Asked Questions
- What is the minimum voltage needed to start the 1756-PB75 power supply?
- The module requires a minimum of 18 V DC to initiate power-up and begin normal operation correctly.
- Can I use this power supply in a chassis with 17 slots?
- Yes, the 1756-PB75 is fully compatible with the 17-slot 1756-A17 chassis, providing sufficient power.
- How much power does the module itself consume from the input source?
- The unit has an input power rating of 95 W to efficiently produce its 75 W of output power for the backplane.
- What is the significance of the 40ms hold-up time?
- This feature ensures the system remains powered for 40ms after an input failure, preventing brief interruptions from causing a shutdown.
- Is special wiring required for the high-current 5.1VDC output?
- No, the high-current outputs are distributed via the proprietary backplane, so no external wiring for these voltages is needed.
Download Manual & Compare Products
- For a deeper technical dive, download the full ControlLogix specifications manual here: Download ControlLogix Manual.
- Compare this power supply with compatible controllers like the 1756-L1 and the 1756-L1M1 processor.
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