Technical function description WSC 304 01
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Smoke control unit - WSC 304 01
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Ventilation functions:
Ventilation OPEN:
With the dead man's circuit activated (SW2/2 = ON), the actuators only move open for as long as the OPEN
button of the ventilation button is kept pressed.
If no dead man's function is activated (SW2/2 = OFF), the actuators open after pressing the OPEN button
(self hold).
Display:
The ventilation open LED in the ventilation button is lit (only with LED integrated in the button).
Ventilation stop:
The actuators stop when both buttons are pressed.
Display:
The ventilation open LED in the ventilation button remains lit (only with LED integrated in the button).
Ventilation closed:
The actuators close after pressing the CLOSED button.
Display:
The ventilation open LED in the ventilation button has extinguished (only with LED integrated in the
button).
Option: Ventilation time module
Time setting between 1 and 30 min. Once this time has elapsed, the actuators close after ventilation „OPEN“
or ventilation „STOP“. This function is not operative if the setting potentiometer is on the right-hand stop.
Wind/rain CLOSE:
The actuators close when the wind/rain sensor has tripped (potential free contact in the sensor switches). The
ventilation functions are out of operation as long as a tripped situation is pending.
Option: Transmission of the wind/rain signal
The trip signal of the wind/rain sensor can be transmitted potential free to the next smoke control unit
by plugging in the wind/rain relaying module.
Note: All ventilation functions are locked in the event of a power failure or when an alarm is triggered!
General information:
CLOSE after a power failure:
Opened actuators will automatically close via the ventilation system 5 minutes after a power failure.
In the event of alarm, this function will be out of operation.
EMC protection:
All inputs and outputs are protected from coupled in interferences.
Short-circuit protection:
All outputs are protected against short-circuit and overload.
Maintenance:
Smoke control systems must be maintained by the builder at least once per year.
The maintenance and check of the system must be documented in a test placard in the smoke control unit as
well as in a logbook.
