Description
Description
The Allen-Bradley 1756-PB75 is a high-performance, standard DC power supply module designed specifically for the ControlLogix platform. This module is engineered to provide reliable power to the chassis backplane, converting an 18-32V DC input into the necessary logic voltages (1.2V, 3.3V, 5.1V, and 24V DC) required by ControlLogix I/O and processor modules. With a maximum output power rating of 75W, it is capable of supporting fully populated chassis configurations in demanding industrial environments.
Features
- 75W maximum output power at 60 degC.
- Designed for dedicated mounting on the far-left slot of a 1756 chassis.
- Wide input voltage range: 18-32V DC (24V DC nominal).
- Integrated overcurrent and overvoltage protection for backplane safety.
- 250V continuous galvanic isolation between the power source and backplane logic.
- Compatible with standard 1756 Series B and C chassis (1756-A4, A7, A10, A13, A17).
Technical Specifications
| Product Model |
1756-PB75 |
| Module Type |
Standard DC Power Supply |
| Input Voltage |
24V DC (Nominal) |
| Input Range |
18-32V DC |
| Output Power |
75W at 60 degC |
| Input Power |
95W |
| Mounting |
ControlLogix Chassis (Leftmost Slot) |
| Weight |
0.98 kg |
Applications
- Water and Wastewater Treatment: Powering controllers for dosing pumps and flow valves.
- Food and Beverage Production: Supporting automation for pasteurization and bottling lines.
- Chemical and Petrochemical: Providing stable power for high-precision PID control loops.
- HVAC and Climate Control: Managing industrial cooling towers and damper systems.
- Metals and Mining: Supporting hydraulic press control and position monitoring.
Installation Guidelines
- Ensure the power supply is installed in the dedicated leftmost slot of the 1756 chassis.
- Always disconnect the main power source before inserting or removing the module from the chassis.
- Ensure proper grounding of the chassis to minimize EMI and protect against electrical surges.
- Maintain adequate clearance around the chassis to allow for proper airflow and cooling, as the unit is rated for operation up to 60 degC.
- Use appropriately sized wiring for the 24V DC input to prevent voltage drop.
FAQ
What is the difference between the 1756-PA75 and 1756-PB75?
The 1756-PA75 is designed for AC power input (85-264V AC), whereas the 1756-PB75 is designed for DC power input (18-32V DC).
Which chassis are compatible with this power supply?
The 1756-PB75 is compatible with standard 1756 Series B and C chassis, including models 1756-A4, A7, A10, A13, and A17.
