5
A Notification Appliance Circuit (NAC) is used to activate 4003 SIGcard points.
This circuit is actually wired to the VCP to allow compatibility with the
"Adjunct" application (see 4001/4002 Adjunct description below). Use of an
NAC circuit to activate 4003 SIGcard points is necessary to retain use of
existing default audio SMPL, and to ensure signal circuit activation is
coordinated with VTG operation. A jumper selects "Track NAC" operation,
causing a reverse polarity signal transfer to directly activate the 4003 SIGcard
points. The alarm power from the NAC must be filtered 24 VDC (with a 2V
peak-to-peak maximum ripple in the voltage). Unfiltered signal power must not
be brought into either the 4003 SIGcard or the Voice Controller Assembly.
In the 4001/4002 adjunct configuration (shown in Figure 3), the 4003 connects
as the end-of-line device to a compatible, dedicated initiating device circuit from
the host panel (such as a Simplex model 4001 or 4002).
4001/4002
OR
VOICE
CONTROL
PANEL
IDC (MONITOR)
NAC (CONTROL)
OTHER
FACP
Figure 3. 4003 Voice Control Panel in the Adjunct Configuration
Alarms from the host panel signal the four notification appliance circuits to
respond with tones and messages as programmed. The Initiating Device Circuit
(IDC) connection monitors 4003 system troubles and allows selection of the
manual evacuation message to automatically send an alarm signal to the host
panel. An auxiliary power connection allows use of the 4003 panel voltage as
required. The alarm response can be customized such as to follow coded inputs
with horn or to play digitally pre-recorded messages with a programmable
combination of digitally generated tones. Alarm Signal Silence and Alarm Reset
are performed at the host panel.
Continued on next page
Hardware Components, Continued
4020 Slave Configuration,
Continued
4001/4002 Adjunct
Configuration
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