Controllers
6.2 Drive functions
AT40, ATD400V, ATD400K, ATD4xxW, ATD400S, ATE250S, ATD400T
System Manual, 06/2016, A2B00096162-AN
57
6.2.19
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 door travels at normal speed immediately if the DCPS (see Section DCPS (Door Closed
Position Sensor) (Page 41)) or DCOPS (see Section DCOPS (door closed/opened position
sensor) (Page 42)) is installed. In this case, the door must be in the CLOSED position for the
restart.
SIDOOR ATD400T - Error response during the initialization run
During the initialization run, five attempts are made to travel through the stored door width.
An error case is signaled by error "P.", and the door remains stationary in the presumed
"closed" position.
SIDOOR ATD410W/ATD420W/ATD430W
After Power ON, the sequential control system is in the "S1: Switching On Inhibited" mode
(see Image 6-33 Sequential control state graph (Page 216)).
6.2.20
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 AT40
Reversing the direction of rotation or restarting the controller several times puts a
disproportionate strain on the drive motor.
The controller switches to motor protection mode for 30 seconds and does not accept any
door commands. This state is signaled by a "4" on the 7-segment display (H401)/the digital
display (H1).
This function prevents thermal overloading of the motor.
SIDOOR ATD4xxW
The fault "4" is generated if the drive is moved continuously in one direction for more than
65 s. This is intended to prevent thermal overloading of the motor. This can only arise in the
event of extremely high levels of system friction, at maximum door width.
