Kentec Electronics Sigma XT Plus Operation And Maintenance Manual

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Kentec Electronics Sigma XT Plus Operation And Maintenance Manual Manual pdf 21 page image

Man-1112 Sigma XT+_23 Page 21 of 5211. Connection to remote control terminalsSome functions of the control panel can be controlled externally from the panel if required. The externalequipment operating inputs must be restricted by an access level 2 control as defined in EN54-2 Thefunctions are abbreviated at the terminals block on the detection zone PCB in the top part of the control panel asfollows:a) Remote 0 V supply – ROVb) Silence Alarm – SIL (Silences sounder outputs S1 &S2)c) Sound Alarm – AL (Operates sounder outputs S1 & S2)d) Fault – FLT (Generates a general fault and operates the fault relay)e) Reset – RST (Resets the system back to normal condition)To activate these inputs, the remote 0 Volt (R0V) supply must be connected to the input via a normally openswitch or contact and via a resistance of no greater than 100 ohms.All of the remote control inputs are non-latching.12. Aux 24V DC supply outputs (extinguishant modules only)The terminals for the Aux 24V supply are labelled Aux 24V + and ROV. The ROV terminal is the negative terminal.It is possible to have the Aux24V supply outputs removed for a few seconds when the panel is reset.Aux 24V not removed upon reset is set as default on the extinguishing modules. To change this, switch the systemto access level 2 by operating the enable control keyswitch and then operate the extinguishing module WRITEENABLE switch by gently sliding it to the left.The LCD will show:AL3 Updates = xxENTER for MenuPress the ENTER button and then the UP button repeatedly until the LCD displays:R0V Not RemovedOn System ResetPress the ENTER button. The LCD will now show:R0V Not RemovedOn System Reset?Press the ENTER button. The LCD will now show:R0V RemovedOn System ResetPress the exit button.The Aux 24V supply outputs are fitted with an electronic, self resetting fuse rated at 0.5 Amps to protect thecontrol panel’s 24V supply in the event of a wiring fault. The Aux 24V outputs should not be loaded with any morethan 100milliamps per module.Any standing load on the Aux 24V supply outputs must be taken into account when calculating battery standbytimes as standby time will be significantly affected by even modest standing loads on these outputs. It isrecommended that the Aux24V outputs are not used to power standing loads.Where the Aux 24V supply outputs are used to power electromechanical devices such as relays or door retainers itis imperative that a suppression diode is fitted across the coil of the device to prevent the generation of highvoltage transients back to the control panel power supply.R0V SIL AL FLT RSTSILENCE ALARM INPUTSOUND ALARM INPUTRESET INPUTFAULT INPUT