The Allen-Bradley 1746-P4 is a high-capacity power supply module designed for use with the SLC 500 programmable controller system. It provides the necessary DC power to the controller backplane, supporting complex configurations that require higher current capacity for I/O modules and processor operations. This unit is engineered to maintain stable system performance in industrial environments by converting standard AC line voltage into regulated DC power.
Features
Designed specifically for the SLC 500 chassis-based system.
High current capacity: 10.0 A at 5V DC and 2.88 A at 24V DC.
Wide input voltage range: 120 to 220V AC.
Integrated CPU hold-up time of 20 ms at full load to ensure stability during brief power fluctuations.
Robust design for reliable operation in demanding industrial control applications.
Technical Specifications
Product Model
1746-P4
Input Voltage
120 to 220V AC
Input Power
92 Watts
Typical Line Power Requirement
180VA
Inrush Current
45 Amps
Output Capacity (5V DC)
10.0 Amps
Output Capacity (24V DC)
2.88 Amps
Backplane Current (5V)
10 Amps
Backplane Current (24V)
0.46 Amps
CPU Hold-up Time
20 ms (full load) / 3000 ms (no load)
Installation Guidelines
Ensure the power supply is installed in the leftmost slot of the SLC 500 chassis.
Always disconnect main power before installing or removing the module to prevent electrical shock or damage to the backplane.
Ensure adequate ventilation around the chassis to maintain operating temperatures within specified limits.
Verify that the input voltage matches the module specifications before applying power.
Use appropriate grounding practices to minimize electrical noise and ensure system safety.
FAQ
What is the primary function of the 1746-P4?
The 1746-P4 serves as a power supply module for the Allen-Bradley SLC 500 system, converting AC input power into the DC voltages required by the processor and I/O modules installed in the chassis.
Can this module be used in any slot?
No, the 1746-P4 power supply is designed to be mounted in the dedicated power supply slot on the far left side of the SLC 500 chassis.
