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5 How the Ditec DAB305 works
5.1
Opening
When an activation signal is received by the control unit, the door is opened at the installer-adjusted
opening speed. Before the door is fully open at back check, it slows automatically to low speed.
The motor stops when the selected door opening angle has been reached. The open position is
held by the motor.
If the door is obstructed while opening, it will either stall or stop which can be selected with a DIP-
switch (SOS). Stop on stall is always active in program selector Mode Off.
• Continue on stall - the door will continue to try to open during the hold open time.
• Stop on stall - the door will, even if hold open time has not expired, close after 2 seconds.
5.2
Closing
When the hold open time has elapsed, the operator will close the door automatically, using spring
force and motor. The door will slow to low speed at latch check before it reaches the fully closed
position. The door is kept closed by spring power or combined with extended closing torque by
the motor.
5.3
Control switch
5.3.1
OFF/AUTO/OPEN switch
Function
OFF
AUTO
OPEN
5.4
Functions on the basic control unit CUS7 (DAB305CU)
See page 59
5.4.1
Power failure
During power failure the operator acts as a door closer with controlled closing speed and a micro
switch will make a lock kick to secure latching (only fire rated version and no Inverse installation).
5.4.2
Closing torque
To comply with authority requirements or to overcome over/under pressure the closing torque
can be adjusted according to EN1154.
14
White
Program
Key is the only valid impulse.
Every impulses are valid.
The door is held permanently open.
for more information.
Issue 2021-06-07
Brown
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1020527-DIen-3.0
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