3-5
The two NACs available with the base 4004 panel are rated at 2-amperes at
24-volts for each circuit. Power-limiting is from the 4004 system power supply.
Additional NACs are added using the 4009 NAC Power Extender. The 4004 is
a general alarm system, meaning that both NACs are energized on any alarm.
Selection of “On Until Silenced” or “On Until Reset” is possible using jumper
switch settings (see the section in this chapter titled “Jumper Settings/Service
Switches). If coding operation is selected, only “On Until Silence” NACs are
coded.
User Interface with AUX circuits for Alarm, Supervisory and Trouble - The
4004 provides for the following auxiliary circuits (negative output):
• Common Alarm output (on until reset and all fire zones clear). The
Common Alarm output is supervised. [TB1-9]
• Common Trouble output (latched until all system troubles clear).
[TB1-8]
• Common Supervisory output (on until reset and all supervisory
zones clear). [TB1-7]
Four-Amp Signal Power Supply with Battery Charger - The system power
supply is part of the system board. A cabinet mounted transformer connects to
the system board. Different transformers are used for 120V and 220/240V
operation. The system power supply provides all necessary system power and
four amperes of signal power. Up to two amperes of auxiliary power is available
from screw terminal connections. AUX power reduces available signal power.
System power is calculated based on three zones in alarm (contact closure being
worst case). If too much alarm current is drawn, the system is protected by
removing loop power and alarms are latched in software. The system power
supply detects earth faults and brown-out/over voltage conditions. The four-amp
power supply battery charger charges 6.2 Ah or 10 Ah batteries needed for
standby operation.
Back Box and Door - The back box for the 4004 mounts between two studs,
16 inches on center. Flush mounting or semi-flush mounting is possible with a
left hinged door.
4004 Expansion Modules (Field Installed):
CAUTION: Power MUST BE REMOVED prior to installing or
replacing expansion modules.
2-IDC Expander Module [565-575] (low current) -The 4004 supports only one
2-IDC expander module in a system. The 2-IDC expander module is used to
expand the system to four or eight zones. Each module terminates for two Style
B initiating circuits. Each circuit supports 2 mA of detector current
(supervisory). Zone disconnect switches are provided on each IDC zone circuit.
An open collector output for each circuit is activated on a short or current-
limited condition. This output can drive and supervise a remote hardwired
annunciator or auxiliary relay load (Air Products) of 150 mA. A 6.8K ohm EOL
is required.
Note: Two 2-IDC Expander modules can not be used to expand a system to six
zones – use one 4-IDC Expander Module.
Continued on next page
System Modules (Continued)
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