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Application Examples
Application Examples
CHAPTER 5
The FIRE•COMMAND•25/50 is a Voice Evacuation Control Panel which can be used, with a variety of Fire Alarm
Control Panels, to provide emergency audio messages. This chapter contains a few application examples and is not
meant to provide a comprehensive list of all possible VECP applications.
5.1
One Speaker Circuit
A very basic application consists of one FIRE•COMMAND•25/50 with one amplifier and a single speaker circuit.
This configuration is suitable for small facilities requiring no more than 25 watts of output power. A single fire evac-
uation message will be generated during an alarm condition from the host FACP or activation of the Manual Evacuate
switch.
In this application, the NAC from the host FACP is connected to CMD1. The CMD1 out terminals are then termi-
nated with an EOL resistor for the FACP's Style Y NAC or the terminals are wired back to the host FACP for a
Style Z NAC. S5 DIP switch 2 is set to OFF which causes the speaker circuit to be activated by the CMD1 input. S5
DIP switch 5 is set to OFF which causes CMD1 input to be activated by a reverse polarity condition.
One 25 Watt Speaker Circuit
FIGURE 5-1:
Style Z
FACP EOL Resistor (Style Y only)
FIRE•COMMAND•25/50 Main
Circuit Board
Style Z
Model R-20K, ½ watt
EOL resistor P/N: 75477
(Style Y - Class B only)
38
Technical Manuals Online! - http://www.tech-man.com
Document #50580
Rev.C
8/12/97
P/N 50580:C
firealarmresources.com
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