The Allen-Bradley 1746-P7 is a specialized DC-input power supply module engineered for the SLC 500 programmable controller system. This module provides a reliable method for powering control racks in environments where standard AC mains power is not available or where battery-backed DC power is required. It accepts a wide input voltage range, making it highly effective for mobile applications, remote telemetry units, and specialized industrial test rigs.
Features
Designed specifically for the Allen-Bradley SLC 500 chassis architecture.
Supports a nominal input voltage of 12V or 24V DC.
Dynamic power output capacity that scales based on the input voltage level.
Provides regulated DC backplane power for the processor and associated I/O modules.
Compact, single-slot form factor for efficient rack space utilization.
Technical Specifications
Brand
Allen-Bradley
Product Line
SLC 500
Module Type
DC System Power Supply
Input Voltage Range
10-30V DC
Nominal Input
12V / 24V DC
Inrush Current
20.0 Amps (minimum)
Fuse Protection
1746-F1 or equivalent
Line Power Requirement
50VA (12V) / 75VA (24V)
Max Real Input Power
50W (12V) / 75W (24V)
Weight
0.99 kg
Installation Guidelines
The 1746-P7 must be installed in the leftmost slot of the SLC 500 chassis.
Ensure the system power is disconnected before installing or removing the module to prevent electrical damage.
Maintain proper ventilation around the chassis to ensure adequate heat dissipation during operation.
Use appropriate wire gauges for the DC input terminals to minimize voltage drop.
Verify that the input power source meets the minimum inrush current requirements to ensure reliable startup.
FAQ
What input voltages does the 1746-P7 support?
The module is designed for a nominal input of 12V or 24V DC, with an operational range of 10-30V DC.
Where should this module be mounted in the SLC 500 rack?
The 1746-P7 is designed to occupy the far-left slot of the 1746 chassis, directly adjacent to the processor.
Does the output power change based on the input voltage?
Yes, the module's total power capacity scales with the input voltage; it provides higher capacity and efficiency when operating at 24V DC compared to 12V DC.
