Two Speaker Circuits - One or Two Messages (CMD1 and CMD2 Amp Selection)
42
Document #50580 Rev.C 8/12/97 P/N 50580:C
5.5
Two Speaker Circuits - One or Two Messages (CMD1 and CMD2
Amp Selection)
This application consists of one FIRE•COMMAND•25/50 with two speaker circuits which requires installation of the
optional second amplifier. This configuration is suitable for small facilities requiring no more than 50 watts of output
power. Depending on configuration switch settings and activation of one of the Command CMD inputs, a fire evacu-
ation message can be generated over one or both speaker circuits or one of two different messages can be generated
over both circuits.
In this application, one 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. A second NAC from the host FACP is connected to CMD2. The CMD2 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 set to OFF causes transmission of one 60 second message. Activation of one or both CMD inputs
determine which amplifier is on. S5 DIP switch 2 set to ON causes transmission of two 30 second messages. Control
of which message to be played over both amplifiers is via CMD1 and CMD2 (refer to charts in Section 2.2). S5 DIP
switches 5 and 6 are set to OFF which causes CMD1 and CMD2 inputs to be activated by reverse polarity conditions.
FIGURE 5-5:
Two Speaker Circuits - One of Two Messages
Style Z
Style Z
FACP EOL Resistor (Style Y only)
FACP EOL Resistor (Style Y only)
FIRE•COMMAND•25/50 Main
Circuit Board
Style Z
Style Z
Model R-20K,
½ watt EOL
P/N: 75477
(Style Y only)
Model R-20K,
½ watt EOL
P/N: 75477
(Style Y only)
Supervisory
Polarity Shown
Supervisory
Polarity Shown
Technical Manuals Online! - http://www.tech-man.com
firealarmresources.com
