Kentec Electronics Sigma XT K11031F2 Operation And Maintenance Manual

Kentec Electronics Sigma XT K11031F2 Operation And Maintenance Manual Manual pdf 21 page image

Product Manuals/Man-1088_Sigma XT_26 Page 21 of 4014.2 Removing status units/ancillary boardsWhen status units/ancillary boards are to be removed from the system, the system must bepowered down first and the status units/ancillary boards removed. The system should then bepowered. When the system starts it will be in fault and the units removed will be shown on thedisplay. Status units are shown as Fux and ancillary boards are shown as Fox (where x is theaddress of the unit). The Select button can be used to view all of the status units/ancillary boardsthat the system expects to be found but are now missing.For the system to accept the removal of these devices from its memory the following proceduremust be carried out.1. Operate the Enable Controls keyswitch.2. Enable the Write Enable Switch (push to the right) – Access level 3.3. Wait for the General fault LED to illuminate4. Disable the Write enable switch (push to the left)5. Disable the Enable controls keyswitch6. The panel should return to the normal quiescent condition.If the panel fails to receive messages from a status unit or ancillary board after it has been storedin the configuration memory, the internal “comms fault” LED will light and a fault condition will bedisplayed on the panel fascia. The seven segment display on the panel will show the number ofthe unit that is disconnected and all LEDs on the status unit that is disconnected will flash.Full details of status units and ancillary boards can be found in document K7247-02 (Sigma XTStatus unit and Ancillary board operation and maintenance manual).Figure 15. – Wiring to status units and ancillary boards15. Panel operation15.1 Normal conditionUnder normal conditions, control panels will have only the green, Power On LED lit and either theManual Only or Automatic and Manual LED lit. The display will be blank.The control panel has 3 access levels. Access level 1 allows unrestricted access, Access level 2allows access only after operation of the front panel mounted “Enable controls” keyswitch andAccess level 3 allows access after operation of the “Write enable” switch behind the front cover.15.2 Single zone Fire conditionUpon receipt of a fire condition by activation of a detector or call point, the Common Fire indicatorwill light and the zonal Fire indicators will flash at around 2Hz.The fire and local fire relays will also operate and signal any systems to which they are connected.Any sounders connected to the sounder circuits S1 & S2 will operate.If the zone that has activated is contributing to the extinguishant release sequence, the First stageactivated LED will light and the first stage relay contact will operate.