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Connection
The "Door locked" function is connected to "Input 2" (X6). See also section Digital input
signals (Page 38).
Signals
Signal
1 (voltage applied)
0 (voltage not applied)
3.3
System functions
Introduction
The system functions described below are needed to protect the door system and are
performed autonomously by the controller.
3.3.1
Restart after power failure
Description of function
After a power failure, the controller has to redetermine the end positions of the door travel.
To do this, the door travels at reduced speed (initial speed) until the controller has detected
the OPEN and CLOSED end positions. The door then resumes traveling at normal speed.
The initialization run is automatically started after a restart of the controller. During the
initialization run, five attempts are made to travel the learned door width. If the learned door
width is not detected, the error "P." is signaled and the door remains in the assumed "Closed"
position.
3.3.2
Overload protection
Description of function
If the drive motor placed under a high load with frequent DOOR OPEN and DOOR CLOSE
commands in quick succession, the hold-open time is automatically lengthened. The next
closing movement is delayed even if a DOOR CLOSE command is present, the 7-segment
display (H401)/digital display (H1) shows "4". This function prevents thermal overloading of
the motor.
SIDOOR ATD400T door control units for railway applications
System Manual, 06/2020, A5E42201947-AB
Description
Door interlocking is active
Door interlocking is not active
SIDOOR functions
3.3 System functions
21
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