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neSS D24 Control Panel - inStallation & PrograMMing Manual
auX
the auX output is a programmable open Collector output suitable for leDs,
relays, etc. this output can sink a total of 50ma.
+12V, 0V Output (x3)
a regulated 13.8 VDC output is available to power detectors and other equipment.
this output is available from three sets of terminals 12V and 0V. the
output is protected by an automatic reset fuse.
the three sets of 12V outputs can be used to power:
1. the output expander board (optional).
2. the D24 Power Board (supplied) and all equipment off the Power Board.
3. the D24 keypad (supplied).
a maximum load of 500ma in total can be connected to these terminals.
relaY
the relay is a programmable output providing a set a dry changeover contacts,
(n.C. CoM. n.o.) with a contact rating of 2a @ 24V.
reset–
a 12V DC output for connecting ness Sirens, piezo sirens or relays, etc. this
output will reset at the end of Siren reset time (P28e) or whenever the panel is
reset.
a maximum of 3 x 12V piezo Sirens (ness Part no. noi240, noi 230, 100-238) or
2 X ness Piezo (Part no 100-172) can be connected to this output. the output is
protected by an automatic reset fuse.
strOBe–
a latched 12VDC output for connecting strobe lights. this output will latch on in
the event of an alarm condition and stay on until the panel is reset.
a maximum of 2 x 1 Watt Strobes (ness Part no. noi300) can be connected to
this output. the output is protected by an automatic reset fuse.
sIren a (srn a–)
Siren driver output for connecting horn speakers (ness Part no. noi110 or
100-171 internal Siren). the output will reset at the end of siren time (P28e) or
whenever the panel is reset, whichever comes first. this output has an internal
resettable fuse.
sIren B (srn B–)
Second siren driver output. Same specifications as Siren a.
When by operating the D24 by optional radio Key or optional Keyswitch, Siren B
will chirp to provide arming/Disarming feedback, (if P34e 2eis enabled).
Siren Chirps
arMing: 1 Chirp from Siren B.
DiSarM: 2 Chirps from Siren B.
J6 lIsten lInK
installer’s diagnostic output. Connect an 8 ohm horn speaker to listen in to dialler
tones.
KeYpad
+12V, 0V, ClK, Data for connecting up to 3 ness D24 lCD keypads connected in
parallel.
the maximum recommended cable run is 100m for 1 keypad using 14/0.20 cable.
each additional keypad will reduce the maximum cable distance accordingly.
OuTPuTS
Output FusIng
The 12V ouputs, Siren, Reset and Strobe outputs
are protected by Automatic Reset electronic
fuses. These outputs will automatically reset once
the overload is removed.
BaCKup BatterY
A properly charged battery MUST be installed
to ensure the Siren, Strobe and Reset outputs
operate correctly.
sIren lOad
A maximum output of 2.0A continuous is
available from the SIREN, and RESET outputs and
200mA from the STR output.
Recommended maximum power load:
3 x Horn speakers total (SRN A and SRN B)
2 x Strobe lights (STR output)
2 x Ness Internal Sirens (100-172) (RESET
output)
note:
(This assumes no more than 500mA is
being drawn from the 12V device output).
MaXIMuM nuMBer OF hOrn speaKers
The D24 supports a maximum of 3 x 8 Ohm horn speakers across SRN A and SRN B.
E.g., SRN A, 2 horn speakers. SRN B, 1 horn speaker.
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