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UPGRADING OF A SHOPPING CENTRE SMOKE VENTELATION SYSTEM.
THIS WAS THE MASTER CONTROL PANEL
IT CONSISTED OF BESPOKE EQUIPMENT.
DIFFICULT REPAIR AND MAINTAIN, SPARE
PARTS UNAVAILABLE.
THE PANEL WAS REMOVED AND REPLACED WITH A CONTROL SYSTEM USING READILY AVAILABLE COMPONENTS. THIS SYSTEM USED 2
WIRE COMUNICATION (DUPLINE) TO THE REMOTE STATIONS. THIS WAS THEN CONVERTED TO I/O AND INTEGRATED INTO THE SMOKE VENTILATION
PLC SYSTEM.
IMAGE BELOW SHOWS 1 OF 5 REMOTE FIREMAN OPERATOR PANELS UPGRADED.
OLD VENTILATION CONTROL PANEL
THE ABOVE WAS REPLACED WITH A NEW PANEL CONSISTING OF A COLOUR TOUCHSCREEN, WITH BUILT IN I/O. MODBUS PROTOCOL WAS USED
TO SIGNAL TO A DUPLINE MASTER GENERATOR. THIS WAS THEN CONVERTED TO A DUPLINE SIGNAL, TO OPERATE TRANSMITTERS
AND RECIEVERS. THEN USING TEMPERATURE, WIND SPEED AND WIND DIRECTION SENSORS WE OPERATE THE VENTILATORS TO CONTROL BUILDING
TEMPERTURE. THERE ARE ALSO SMOKE DETECTORS WHICH OVERIDE THE SYSTEM TO OPEN THE VENTS.
THE BENEFIT OF THE TOUCHSCREEN IS THAT THE ALARMS, GRAPHICS AND INFORMATION DISPLAYED IS MORE USER FRIENDLY THAN BASIC
2 OR 4 LINE DISPLAYS.
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