- Calculate the complete SLC 500 chassis load before selecting 1746-P4
- Include the isolated 24 V user output in the shared 70 W output budget
- Verify installed series and input-voltage wiring before replacement
1746-P4 is an Allen-Bradley SLC 500 rack-mount AC power supply.
It powers the SLC backplane and provides an isolated, non-fused 1 A, 24 V DC user output for suitable sensors and loads.
Confirm chassis loading, mains wiring, user-output demand and installed-series behavior because the product is discontinued without a planned direct replacement.
Availability, condition, price, and shipping time for 1746-P4 are confirmed during quotation.
Allen-Bradley 1746-P4 SLC 500 Power Supply Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Total the 5 V and 24 V backplane current required by every module
- Include the 24 V user source in the documented 70 W combined limit
- Allow for future I/O additions without exceeding the power-supply curve
- Use the isolated 24 V output only within its current and voltage limits
- Provide appropriate time-delay protection on ungrounded conductors
- Consider the documented Series A shutdown and CPU-fault behavior
- Confirm the input range and line-frequency wiring before energizing
- Account for load-dependent CPU hold-up during undervoltage events
- Verify controller mode, program and outputs after a power interruption
- SLC 500 chassis whose calculated 5 V DC backplane load remains within the 1746-P4 10.0 A capacity
- Chassis designs whose 24 V DC backplane demand remains within 2.88 A and whose combined output stays within 70 W
- Isolated 24 V DC user circuits within 1 A and the shared 1746-P4 total-output limit