7 Smart PSU
This section describes the components and wiring of the Smart PSU.
7.1 SPCP355.300 Smart PSU
The SPCP355.300 Smart PSU is a power supply combined with an 8-input/2-output expander, contained
in a G5 housing. The PSU is backed up by either 2x24Ah, or 2x27Ah batteries, and provides eight power
and four logical outputs
The expander monitors the PSU for overcurrent, fuse failures, AC voltage, communications, and battery
output. The expander is powered by, and receives data from, the PSU via a connector cable. It also
interfaces with the SPC controller over the SPX X-BUS.
Number Description
SPCP355.300 Smart PSU
1 Mains input and fuse block
2 Input transformer
3 AC IN — AC power input
4 MAINS — Mains power LED
5 BATT1 — Battery 1 charge state LED
6 BATT2 — Battery 2 charge state LED
7 FUSE — Fuse fail LED
© Vanderbilt 2018 57 A6V10276959-d
11.2018
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