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ManualsBrandsSiemens ManualsFire - Alarm EquipmentPSC-12 12 Amp Power Supply, Installation Instructions

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P/N 315-099321-7

Model PSC-12

Installation Instructions

Figure 1

PSC-12 12 Amp Power Supply

INTRODUCTION 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).

Features 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

12 Amp Power Supply for NCCNT WAN

Summary of content (12 pages)

PAGE 1
Installation Instructions Model PSC-12 12 Amp Power Supply for NCCNT WAN INTRODUCTION 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 builtin charger that is capable of charging up to 100AH batteries. It also has a microprocessor-controlled transfer circuit that allows the PSC12 to switch the system power to stand-by batteries during loss or reduction of the AC power.
PAGE 2
OPERATION • Supplies 6.2VDC @ 2A (power limited) to the system bus • Supplies 24VDC @ 2A (power limited) to the system bus (subject to a 12A total current limit) • Communicates via HNET protocol • Four programmable relays with 2A ratings The PSC-12 occupies one network address in the HNET network and has four functional components: the Controller, the Charger, the Power Supply and the Interface Board.
PAGE 3
DO NOT USE DO NOT USE P5 1 4 BATTERY THERMISTOR GROUND FAULT SUPERVISION P4 2 TB1 1 + 6 7 1 P10 Normally OFF. When illuminated, indicates that the 24VDC non-power limited output has a trouble condition or the PSC-12 has disconnected the 24VDC output due to current overload or short circuit. 24V 4A FAIL - Normally OFF.
PAGE 4
TB3 Currently NOT USED. TB4 24VDC Non-Power Limited Output Terminal. This terminal is non-power limited and can supply up to 12A. When the current draw is exceeded, it shuts down, lights its associated LED and sends a fault condition to the NCCNT WAN. This output is normally connected to the input terminals of the CC-5. This output must remain within the enclosure or within 20 feet in rigid conduit. All wiring must be in accordance with Article 760 of NEC or local building codes. (See Figure 2.
PAGE 5
PRE-INSTALLATION The PSC-12 installation kit has the following components: INSTALLAT ION KIT COMPONENT S PSC-12 / PTB Kit PSX-12 Four #10-32 ½" Phillips Screws (for PSC-12) Four #10-32 ½" Phillips Screws (for PSX-12) Four #10 Hex Nuts (for PTB) PTB (Only) Four #10 Hex Nuts AC Wire Assembly, P/N 600-134264 AC Wire Assembly, P/N 600-134264 Battery Wire Assembly, P/N 465-633943 Battery Wire Assembly, P/N 465-633943 Battery Cable Conversion Kit P/N 545-634222 60-pin Flat Ribbon Cable, P/N 555-1330
PAGE 6
The PSC-12 can occupy any position in a row in the backbox or on the mounting plate, but it should be installed in the row and position that is located directly above the PTB to which it is connected. (Refer to Figures 4 and 6). When the PSC-12 is mounted correctly on the optional Mounting Plate it will be flush on the top, bottom, and right with the Mounting Plate and the mounting screw holes of the PSC-12 will align with the threaded posts. 1.
PAGE 7
WIRING The PSC-12 has removable terminal blocks and connectors at the top and bottom of the module. The terminals and connectors at the top of the PSC-12 are power limited. The terminals and connectors at the bottom of the PSC-12 are non-power limited. (Refer to Figure 6.) Use a separate or dedicated circuit breaker and run the earth ground from a suitable source to the PSC-12. Check local requirements. Conduit is not an acceptable Earth Ground Conductor.
PAGE 8
Battery Connections When BTX-1, BTX-2 or BTX-3 batteries are required, connect them to the system with the Battery Cable Conversion Kit, P/N 545-634222, following the steps listed below. (Refer to Figure 7.) 1. Using the 12 in. long wire assembly, connect the two batteries together, as shown in Figure 6. Secure each end of the assembly to the battery with a 10-32 x 3/4” screw and lock nut. 2.
PAGE 9
To ensure that the PSC-12 power supply is not overloaded, use the form and follow the procedure listed below. Battery Power 1. Enter the quantity of each card/module in the enclosure. 2. Calculate both the 24VDC and 6.2VDC loads for each row. 3. Total the Active 24VDC and Active 6.2VDC columns. 4. Ensure that both totals are within the power supply output ratings. Make sure that the battery circuit breaker is in the OFF position. Use either 14 or 12 AWG for battery connection.
PAGE 10
These battery models are UL listed for use with the system: • BP-61—24V, 15 AH • BTX-1—a set of 12V, 31 AH • BTX-2—a set of 12V, 75 AH • BTX-3—a set of 12V, 100AH Select the battery that meets or exceeds the final calculated battery amp hour rating. Use an external battery box, Model CAB-BATT from Siemens Industry, Inc. (P/N 500633917) with the BTX-2 and BTX-3 models. Battery System Electrical Rating: Input Voltage: 24VDC +10%, -15% Input Current: 15A max.
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Siemens Industry, Inc.
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Siemens Industry, Inc. Building Technologies Division Florham Park, NJ Siemens Canada, Ltd.