AB 1746-P3 SLC Rack Mounting Power Supply

Technical Specifications for 1746-P3

About  1746-P3

The 1746-P3 is a Power Supply module. This module is part of the SLC 500 controller platform that is mainly used to provide power to the 1746 backplane to which the SLC 500 modules are attached to. This power supply module is located at the left-most area of the rack and does not occupy a chassis slot. It internally converts input power to a voltage level usable by the modules, specifically, converts an input supply voltage of 19.2...28.8V dc to an internal supply of 3.6 A at 5V dc and 0.87 A at 24V dc.

The 1746-P3 is especially applicable to the SLC 500 Modular control system. It has a typical line power requirement of 90 VA with isolation of 600V ac RMS for 1 second. This module features a pre-installed fuse which may be replaced with Allen-Bradley recommended 1746-F3 or any equivalent. Additionally, Fuse sizes declared are used for end-devices only. It may be reduced depending on the size of circuit wiring. This power supply also exhibits a CPU hold-up time of 5 ms when operating at full load or 1000 ms when no load. This hold-up time allows the power supply to maintain the operating state of the CPU from the time when the supply voltage drops below the minimum range.

The 1746-P3 is certified by Underwriter’s Laboratories (UL), Listed as Industrial Control Equipment for Class 1, Division 2, Groups A, B, C, D Hazardous Locations; C-UL Listed as Industrial Control Equipment for Class 1, Division 2, Groups A, B, C, D Hazardous Locations as well as other standardization and certifying bodies.


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