Product description
1.4 QS4 Technical Reference Manual
6. RS485 (NT–A) Class A Card: The NT–A
comprises the RS485 card and QS–232 UART
module. Together these provide an additional
RS–232 channel to allow Class A communication
between the control panel and other remote
annunciator panels. Control panels require
installation of both cards while remote
annunciator panels only require installation of a
QS–232 card and only then if you want to
connect a printer or service computer.
7. ZA8–2 Class A Conventional Zone Card:
Provides six dedicated Class A initiating device
circuits (IDCs) for connecting two-wire smoke
detectors and dry-contact initiating devices. The
ZA8–2 also provides two circuits that you can
configure as IDCs or as 24 Vdc notification
appliance circuits (NACs).
8. ZB16–4 Class B Conventional Zone Card:
Provides twelve dedicated Class B initiating
device circuits (IDCs) for connecting two-wire
smoke detectors and dry-contact initiating
devices. The ZB16–4 also provides four circuits
that you can configure as IDCs or as Class B 24
Vdc notification appliance circuits (NACs).
9. QS–Cable12 Expansion Cable: Extends the
CPU data and power bus to circuit cards installed
on the lower DIN rail in the 12-option cabinet.
10. ZR8 Relay Card: Provides eight dry-contact
relays. You can configure each relay for
normally-open or normally-closed operation.
11. DLD Dual Line Dialer Card: Provides two
telephone line connections for sending system
messages to a compatible Digital Alarm
Communicator Receiver.
12. SLIC Signature Loop Intelligent Controller
Card: Provides one Class A or Class B signaling
line circuit (loop) for connecting Signature series
detectors and modules. The SLIC also provides
two Class A or Class B notification appliance
circuits (NACs) for connecting polarized 24 Vdc
notification appliances (horns, strobes).
13. Standby batteries: Provides dc power to the
panel electronics in the absence of ac power.
14. Transformer: Changes the mains ac supply
voltage for the power supply card.
15. AC wiring block and fuse holder: Provides
connections for mains ac (primary power) and 5A
fuse.
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