PREMIER QUATRO INSTALLATION MANUAL
Software Versions: PANEL 1.52 & LOOP CARD 2.0
Doc No. GLT.MAN-134
PAGE 17
Issue: 1.33 Author: GW/NJ Date: 14/1/2013
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)
500 mA
400 mA
300 mA
200 mA
1mm CSA cable
500 m
625 m
830 m
1250 m
1.5mm CSA cable
750 m
930 m
1250 m
1870 m
2.5mm CSA cable
1000 m
1250 m
1660 m
2500 m
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 & INTERFACE UNITS)
The device Address is set with a dip switch on the rear of the device.
1
7
6
5
4
3
2
8
ON
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 Quatrodress, but sometimes has a device specific
function. (check instructions that came with the device)
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