Kentec Electronics Sigma XT Plus Operation And Maintenance Manual

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Kentec Electronics Sigma XT Plus Operation And Maintenance Manual Manual pdf 22 page image

Man-1112 Sigma XT+_23 Page 22 of 5213. Connection to relay contactsVolt free changeover relay contacts are provided for local control and signalling if required. These contacts arerated for switching signalling circuits only and the maximum ratings listed in table 1 should not be exceeded underany circumstances.Typically, the Aux 24V outputs of the control panel are switched through these relays and used to control othersystems.13.1 Common Fault relay (on detection part of control panel)The common fault relay is normally energised and will de-energise upon any fault condition on the detection partor the extinguishing part of the control panel including total loss of power.The fault relay can be disabled by setting configuration option 22 at access level 3 as shown in the Fire Detectionconfiguration options table.13.2 Fault relay (on extinguishing part of control panel)These fault relays are normally energised and will de-energise upon any fault condition on the extinguishingmodule or total loss of power. These relays provide individual “flooding zone fault” outputs13.2 Local fire relay (on detection part of control panel)The local fire relay will energise upon activation of a fire condition on any of the zones or pressing of the soundalarm button on the front panel. The relay will remain activated until the alarm is silenced or the panel is reset.This relay will not operate upon activation of the remote AL input or when a fire condition is triggered on a zonethat is in test mode. This makes the Local fire relay suitable for inter panel signalling without the panels latchingeach other.13.3 Fire relay (on detection part of control panel)The fire relay will energise upon activation of a fire condition on any of the zones or pressing of the sound alarmbutton on the front panel. The relay will remain activated until the alarm is silenced or the panel is reset. Thisrelay will not operate upon activation of the remote AL input and the Silenced/ Sound Alarm button. The fire relaycan be disabled by setting configuration option 26 at access level 3 as shown in the Fire Detection configurationoptions table.13.4 1 st stage alarm relay (on extinguishing modules)First stage alarm relays will operate upon activation of a zone that has been configured to contribute to theextinguishant release and will de-activate only when the panel has been reset.This relay will also operate upon activation of the panel mounted or a remote manual release switch. The stage 1relay output can be disabled at access level 2 via the menus on the Sigma XT+ module.13.5 2nd stage alarm relay (on extinguishing modules)Second stage alarm relays will operate when the panel enters the activated condition (i.e. the release countdowntimer has started) and will de-activate only when the panel has been reset from the released condition.The stage 2 relay output can be disabled at access level 2 via the menus on the Sigma XT+ module.13.6 Released relay (on extinguishing modules)The released relay on the extinguishing module will operate when the module enters the released condition eitherby being activated automatically via detection zones or by being activated by a manual release input. The releasedrelay will also operate if the panel enters the released condition via the released pressure switch input.The Released output can be disabled at access level 2 via the menus on the Sigma XT+ module.13.7 Aborted relay (on extinguishing modules)Aborted relays will operate when the panel is in the aborted condition via an abort switch input.13.8 Extract relay (on extinguishing modules)The extract relay will operate when selected at access level 2. This provides a means to vent a room ofextinguishant gases but prevents the gases from being vented during a discharge.To switch on the extract relay, operate the enable keyswitch and then press ENTER on the module on which therequired Extract relay is fitted.The LCD will show:DISABLEEXTING RELEASE ? Press the down button until the display shows:TURN ONEXTRACT OUTPUT ? Press ENTER to turn on the Extract output.The display will show:TURN OffEXTRACT OUTPUT ?Pressing ENTER again with turn the extract output off.