Siemens FIREFINDER-XLS Installation, Operation And Maintenance Manual page 13

FIREFINDER-XLS INSTALLATION, OPERATION AND MAINTENANCE MANUAL
PSC-12 Power Supply
CC-5 Card Cage
CC-2 Card Cage
DLC Device Loop Card
1-6
DESCRIPTION
The PSC-12 is a high current power supply that
provides the FireFinder-XLS system with primary
regulated 24VDC. It is rated at 12A and has a built-in
charger that is capable of charging 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 connection to a tamper
switch and terminal tie points for system signals.
The PSC-12 communicates directly to the PMI to report fault conditions and allows
the PMI/PMI-2/PMI-3 to query the status of the power supply. It has four program-
mable single pole double throw relays. Two relays are defaulted to activate when the
degrade ALARM bus or degrade TROUBLE bus is asserted.
The CC-5 provides a central point for mount-
ing up to five circuit card assemblies. If a
card requires power, it is applied through the
removable terminal block at the bottom of
the cardcage. All external devices for the
card are connected to the card through the
two removable terminal blocks at the top of
the cardcage.
The CC-2 provides a central point for
mounting up to two circuit card assem-
blies. If a card requires power, it is
applied through the removable terminal
block at the bottom of the cardcage. All
external devices for the card are
connected to the card through the two
removable terminal blocks at the top of
the cardcage.
The DLC supports one loop (two isolated parallel zones) of up to 252
FireFinder-XLS intelligent field devices as well as device accessories (relay
bases, audible bases, and remote lamps) in any combination. The DLC
initializes, operates, and maintains all devices residing on the loop and
communicates all relevant device and event information, such as alarms and
troubles, to the System CPU. The DLC allows the System polarity insensitive
devices to be connected without generating errors.
The microprocessor controls the on-board isolator to isolate either zone from
the loop if one of them is shorted. When one zone is isolated from the loop,
the other zone will still work. The on-board microprocessor provides the DLC
with the ability to function and initiate alarm conditions even if the main
FireFinder-XLS CPU fails.
| CHAPTER 1
DLC
RESET RESET
POWER
CARD FAIL CARD FAIL
HNET FAIL
GND FAULT GND FAULT
ALARM
TROUBLE
ZONES STATUS ZONES STATUS
Z
CLASS A OPEN CLASS A OPEN
O
N
CLASS A RETURN
E
1
SHORT
Z CLASS A OPEN CLASS A OPEN
O
N CLASS A RETURN
E
SHORT
2
HUNDREDS
TENS
ONES
HNET