Specifications

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SLC 500 Programmable Controllers and I/O Modules
Power
Supplies
Allen-Bradley offers seven different
power supplies: three ac and four dc.
The ac supplies can be configured to
operate using 120 or 240V ac.
When configuring an SLC modular system, each chassis requires a power
supply to provide power to the processor and I/O slots. Careful system
configuration results in the best performance. Excessive loading of the power
supply outputs can cause a power supply shutdown or premature failure.
You should consider future system expansion when selecting a power supply.
Features
• All power supplies have an LED that illuminates when the power supply
is functioning properly — Saves troubleshooting time.
• Power supplies are designed to withstand brief power losses — Power loss
does not affect system operation for a period between 20 milliseconds and
3 seconds, depending on the load.
• The ac power supplies have a jumper wire for easily selecting
120 or 240V ac — No special wiring is required.