Maximum Loop Length Recommendations; Setting The Device Address (Detectors, Call Points & Sounders) - Zeta NPAD 2 Installation Manual

PREMIER AD INSTALLATION MANUAL.
48-110 ZSCC
48-115 ZT-ZM
42-007 ZAMT
42-060 ZAMDD
42-062 ZAMDF
42-030 ZAST
48-020 ZTA/LE2
47-055 ZTA-FR50
47-056 ZTA-FR100
42-001 ZMT/8
42-002 ZMD/8
42-004 ZST/8
42-005 ZIDC/10R
42-011 ZFL2RR
42-013 ZLT/8RR
41-003 ZTB6B/24
41-005 ZTB8B

7.3 MAXIMUM LOOP LENGTH RECOMMENDATIONS

With an addressable system, some care must be taken when calculating the appropriate cable gauge for the
system.
The main limitation is that during an alarm condition (maximum current draw), the voltage at all detectors must be
at least 17 Volts with at least 5V of superimposed data signal.
The exact calculation equations are beyond the scope of this manual, because of the distributed load of the
sounders on the loop, but the following table gives a rough guide for maximum cable lengths at various current
loads for 3 different cable gauges
Maximum Loop Current (in Alarm)
1mm CSA cable
1.5mm CSA cable
2.5mm CSA cable
EG. A system with a maximum load of 300mA using 1.5mm cable can have a maximum loop run of 1250 m end to
end.
7.4 SETTING THE DEVICE ADDRESS (DETECTORS, CALL POINTS & SOUNDERS)
The device address is set with a dip switch on the rear of the device.
5 6
1 2 3 4
The address setting is binary, with
the ON position being binary 0 , and
the OFF position being binary 1.
Switch 8 is not used for setting the
address, but sometimes has a
device specific function. (check
instructions that came with the
device)
Approved Document No: GLT.MAN-105A
Issue : 2.02 Authorised: GH
Zeta Sounder Control Module
Zeta Zone Monitor Unit (Loop Powered)
Zeta Addressable Maxitone Sounder
Zeta Addressable Miditone Sounder
Zeta Addressable Miditone Sounder with LED Flasher
Zeta Addressable Securetone Sounder
Zeta Addressable Remote Led Indicator
Fyreye Addressable Reflective Beam Detector 50m
Fyreye Addressable Reflective Beam Detector 100m
Zeta Conventional Maxitone Sounder
Zeta Conventional Miditone Sounder
Zeta Conventional Securetone Sounder
Zeta Conventional Megatone Sounder
Zeta Conventional Flasher
Zeta Conventional Flasher Sounder
Zeta Conventional 6" Bells
Zeta Conventional 8" Bells
500 mA
500 m
750 m
1000 m
ON
7 8
Date: 16/07/2007
400 mA
625 m
930 m
1250 m
If you are not familiar with binary, check the
table on page 14, or use the following rule:
Switch 7 off = add 64,
Switch 6 off = add 32,
Switch 5 off = add 16,
Switch 4 off = add 8,
Switch 3 off = add 4,
Switch 2 off = add 2,
Switch 1 off = add 1.
The example shown would be:
switches 6, 4 & 1
=32 + 8 + 1 = Address 41
Software:PANEL:R1107 & LOOP:R1062
300 mA 200 mA
830 m 1250 m
1250 m 1870 m
1660 m 2500 m
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