Siemens PSC-12 Installation Instructions Manual

Installation Instructions

Model PSC-12
12 Amp Power Supply for NCCNT WAN
INTRODUCTION
Features
P/N 315-099321-7
The Model PSC-12 from Siemens Industry, Inc. is a high current power supply that
provides the system with primary regulated 24VDC. It is rated at 12A and has a built-
in charger that is capable of charg-
ing up to 100AH batteries. It also
has a microprocessor-controlled
transfer circuit that allows the PSC-
12 to switch the system power to
stand-by batteries during loss or
reduction of the AC power.
The PSC-12 incorporates an 18A
circuit breaker on the battery input.
It provides terminal tie points for
system signals.
The PSC-12 mounts at the back of
the enclosure of the COM-1 and
occupies one location on the studs
in the backbox or on the optional
CAB-MP Mounting Plate.
The PSC-12 has four programmable
relays. The relays can be configured
in the NCC WAN to change state on
a global alarm, a global trouble or on a manual request (general output).
The PSC-12 features are as follows:
• Universal AC power input 120VAC-240VAC @60Hz / 50Hz
• Off-line Switch Mode Power Converter
• Power Factor Correction
• Built-in Battery Charger
• Total Output power of 12A@24VDC
• Two separate power output terminals: one power limited terminal with 4A
max @ 24VDC capacity and one non-power limited terminal with 12A max
@ 24VDC capacity (total not to exceed 12A)
• Both output terminals have current measurement capability
• Auto resettable current protection circuits for overload and short circuit
• Access to CC-5 System bus
Figure 1
PSC-12 12 Amp Power Supply
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