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Sigma-XT Fire Alarm and Extinguishant System Warning Signs Installation and Operations Manual 24V Switched Input Type Australia Version 1 – February 2013...
1 Overview The conventional illuminated warning signs provide a clear, visual and audible warning for a variety of applications. Standard units are available to provide warning of a fire alarm or extinguishant release but the display may be customised to show any text on several coloured backgrounds. Warning signs have two levels of operation in which the top and bottom halves of the sign may be split to show an initial warning and then additional text for a reinforced warning if required.
3 Cabling The back box has two 20mm knockouts in the top, bottom and back and one 20mm knockout in each side. Knockouts can be removed by sharply tapping them and when loose, pushing them back and forth until they break off.
4 Operation NOTE: Jumper J1 must ALWAYS be in position B for correct operation. Connecting the + supply to the COMM+ terminal and the – supply to the LEV1 terminal will illuminate the upper half of the sign as shown below. Connecting the + supply to the COMM+ terminal and the –...
5 Connections for Inputs TO NEXT SIGN ON CIRCUIT Connect 15 to 30 Volt DC supply as shown. If the internal buzzer is enabled then it can be = LEV 1 silenced by an external, normally open volt free = LEV 2 contact momentarily connected to the terminals marked SILENCE.
7 External sounder There are an additional two terminals which can be used for connecting to an external sounder. The sounder can be a conventional, polarised type or a two tone sounder with a voltage reversing input to signal the two different levels of activation. This sounder output will also silence when the SILENCE input is operated.
8 Configuration switch The configuration switch allows the sign to be configured to suit the application and provides the facility to choose: LEV 1 FLASH Level 1 will be lit continuously with switch in ON position LEV 2 FLASH Level 2 will be lit continuously with switch in ON position SINGLE/DUAL Both halves will be lit regardless of the input with this switch ON ENABLE BUZZER...