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Home --> Morley-IAS
  • General
  • Feature
  • Specification
The 300 series Zone Display Unit is a transparent module directly connected to the Control Panel and requires no external power supply. The ZDU works with all of the 300 series detectors. When a detector goes into Alarm the ZDU responds to the current absorped by disconnecting the line to the Control Panel. The ZDU behaves like a detector in Alarm so that the Control Panel continues to warn of the Alarm and communicates with the detectors in order to obtain the addresses of those detectors in Alarm.
MINIMUM NOMINAL MAXIMUM UNITS COMMENTS Supply voltage 15 24 31 VDC Standby current --- 80 100 mA Does not include detector current Series resistor 270 330 680 W External series resistor value has to be added to the internal one (if present). Output impedance --- --- 1 W Does not include series resistor Reset time --- --- 0.3 S Alarm condition Reset time --- --- 1 S Normal condition (@24V, isolated line) Mechanical Specifications MINIMUM NOMINAL MAXIMUM UNITS COMMENTS Height --- --- 40 mm Length --- --- 132 mm Diameter --- --- 137 mm Weight --- --- 170 g Cable entry area --- --- 750 mm² Circular knock out on the box back side