August 1999 76-100016-001
PEGAsys
Intelligent Suppression Control/Fire Alarm System
7-6
7-7.8. Power Supply Communication Connections
Both Rev. A & C communicate with the CCM over the I/O bus of
the PEGAsys system. To that end, there are different ways of
connecting these components. The power supply unit in the
main enclosure of the PEGAsys system communicates with the
CCM over a short phone style cable. The I/O bus extends out of
the power supply when needed, i.e., a motherboard installed or
other power supplies installed in expansion enclosure without a
motherboard. These two examples are accomplished as fol-
lows:
1. Power supply in main enclosure to motherboard in main
enclosure; A flat six conductor phone type cable is attached
to “CON 2” of power supply and then inserted into the RJ-
12 jack on the motherboard labeled “I/O buss”. Remove
jumper “W4” to enable the terminating resistor on the moth-
erboard, the terminating resistor is used to balance the RS-
485 communications.
2. Power supplies installed in expansion enclosure without a
motherboard can use the RS-485 terminal block (TB1). This
connection allows the installer to connect a twisted pair
AWG-18 cable to terminals A & B of TB1 on the power
supply in the main enclosure and connect to the same ter-
minals on the power supply in the expansion enclosure, as
shown in the following diagram. This connection must be
daisy chained to other power supplies in the expansion en-
closure, if installed. Jumper W4 must be removed from all
power supplies in line except the last power supply unit in
the expansion enclosure. This will maintain the terminating
resistor at the end of the RS-485 circuit, which is required
to ensure proper operation of the RS-485 communications.
7-8 CONNECTING AC POWER
AC power must be provided to the Central Control Panel’s in-
ternal power supply using three conductors. The AC power cable
is to be run through a conduit from a dedicated, 15 amp circuit
breaker. The conduit must be attached to the right side of the
Central Control Panel enclosure through one of the knockouts
near the upper right corner of the enclosure.
See Appendix A for AC branch circuit requirements details.
WARNING
High voltages may be present when connecting AC
power to the Central Control Panel. Suitable pre-
cautions must be taken to avoid injury.
NOTE: All Non-Power-Limited wiring must be routed away from
Power Limited wiring by a minimum of 1/4", per NFPA
& UL requirements. For Power Limited Circuits use
Type FPL, FPLP, or FPLR cable per NEC Article 760.
Insure that the circuit breaker at the dedicated AC power source
is in the OFF position. Attach the three AC power conductors to
TB1 on the Central Control Panel’s power supply PCB as shown
on drawing No. 06-235443-003, in Appendix I.
7-9 INSTALL AND CONNECT DC POWER
Space is provided within the Central Control Panel for two 12V
33AH sealed lead acid batteries used for 24 hour standby op-
eration.
7-9.1 Battery Enclosure
A separate UL Listed battery enclosure, shown in Figure 7-10,
(P/N 76-100010-001) is used to house up to two 12V, 40AH,
sealed lead-acid batteries. The enclosure is designed to be sur-
face mounted using only hardware similar to that used on the
CCP (See Paragraph 7-3) and must be mounted within 100 feet
of the panel.
NOTE: Wiring for the batteries to the power supply must be
sized accordingly to prevent unacceptable voltage
drops.
7-9.2 Batteries
Refer to Appendix A for required system power calculations.
Refer to Appendix E for FM Pre-Action/Deluge sprinkler require-
ments for 90-hour standby periods.
Recommended battery manufacturers and models are:
Standby
Time Battery
24 Hours Panasonic LCR 12V 17AP,17 AH
(P/N 06-115915-046)
60 Hours Power Sonic 12330, 33 AH (2 sets)
(P/N 89-100052-001)
90 Hours Power Sonic 12330, 33 AH (3 sets)
(P/N 89-100052-001)
The batteries should be rated for standby power use and fit
within the physical dimensions of the respective enclosure. The
batteries must have terminals that accept standard ring-type
solderless connectors.
CAUTION
Do not connect the batteries to the system’s power
supply at this time. Connect the batteries at the end
of the system's installation.
Connection to the power supply must be according to drawing
06-235443-003, in Appendix I.
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