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Operating Power
3.3
Operating Power
CAUTION: Several different sources of power can be connected to this panel. Disconnect all sources of power
!
before servicing. The panel and associated equipment may be damaged by removing and/or inserting cards, modules
or interconnecting cables while this unit is energized.
Main Input Power - Connections Made Only if Optional FC-PSM(E) Power Supply is Not Installed
The VECP requires filtered 24 VDC nominal power which can be supplied by the host FACP or by a remote
power supply UL listed for Fire Protective Signaling Service, such as the FCPS-24F(E). Refer to Appendices for
wiring information. Supplied power must be from a power-limited source. Run a pair of wires from a regulated
24 VDC output on the host FACP or remote power supply to the VECP's TB3 Terminals 3(-) & 4(+). The jumper
on P7 pins 1 & 2 must remain installed. Be certain to connect a separate solid earth ground to the transformer
mounting stud to ensure proper panel operation and lightning and transient protection. Be certain to include the
FIRE•COMMAND•25/50 power requirements in the FACP or remote power supply battery calculations.
Internal Power Supply/Battery Charger FC-PSM(E)
An optional power supply is available to allow stand-alone capabilities and is required for background music
applications. AC power connections are made to the FC-PSM(E) Internal Power Supply/Battery Charger.
Primary power source is 120 VAC, 60 Hz, 1.0 amp for the FC-PSM Power Supply/Battery Charger module and
220/240 VAC, 50 Hz, 0.5 amps for the FC-PSME Power Supply/Battery Charger module. Run a pair of wires
(with ground conductor) from the protected premises main breaker box to TB1 of the FC-PSM(E). As per
National Electric Code, use 14 AWG (1.6 mm O.D.) or heavier gauge wire with 600V insulation. No other equip-
ment may be connected to this circuit. In addition, this circuit must be provided with overcurrent protection and
may not contain any power disconnect devices. A separate Earth Ground connection must be made to ensure
proper panel operation and lightning and transient protection. Connect the Earth Ground wire (minimum 14
AWG) to one of the transformer mounting studs. Do not use conduit for the Earth Ground connection since this
does not provide reliable protection.
CAUTION: W hen the FC-PSM(E) Power Supply/Battery Charger is installed, there should be no other connec-
!
tions to TB3 of the V ECP.
Secondary Power Source (Batteries) When Power Supply/Battery Charger FC-PSM(E) is Installed
Observe polarity when connecting the battery. Connect the battery cable to P2 on the Internal Power Supply Bat-
tery Charger module using the plug-in connector and cable provided. The battery charger is current-limited and
capable of recharging sealed lead acid type batteries (See Figure 3-5 for battery orientation). The charger shuts
off when the system is in alarm. See Appendix A for calculation of the correct battery rating.
CAUTION: Battery contains sulfuric acid which can cause severe burns to the skin and eyes, and can destroy
!
fabrics. If contact is made with sulfuric acid, immediately flush the skin or eyes with water for 15 minutes and
seek immediate medical attention.
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Technical Manuals Online! - http://www.tech-man.com
Operating Power Connections
FIGURE 3-5:
Document #50580
Rev.C
firealarmresources.com
8/12/97
P/N 50580:C
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