Symptom
Solutions
Door begins to close (or
open) but reverses
1) Mechanical Observations
x
Check door path for any obstructions such as large
debris, chips, tool, “rough” spot in door track, etc.
x
Does door bind or twist when ATD moves door
x
Is door staying in it’s door path and not being “lifted”
by ATD drive belt and causing an “obstruction” error
Door nearly fully closed
(
or open) but reverses
1) Incorrect Speed Parameters
x
Check “Diagnostics”
x
Error 1602 or 1603 “Torque Reversing” – ATD
Cannot decelerate the door to the desired speed
within the designated distance
x
Increase the “Braking Distance” in the “Motion
Control” screen
AND / OR
x
Decrease the “Opening” or “Closing Speed” in
the “Basic Functions” Screen
2) Is this an ATD 101?
x
Increase “Braking Distance” to at least 400mm
x
Possible fix - Turn off only the “Speed Lagging” Option
in the “Motion Control – Reversing Options” Menu
x
Possible fix - Turn off only the “Force Reversing”
Option in the “Motion Control – Reversing Options”
Menu
Door moves very short distance
and stops. Error 1301 –
“Door Opening too small”
1) Mechanically Related
x
Is the door mechanically binding such that it cannot
move more than a few inches?
x
Is the door too heavy for the ATD?
x
Did the internal drive belt come off the motor to drive
sprocket? (Controller is not sensing any encoder
movement)
2) Encoder Related problem
x
Is the encoder cable properly connected at both ends?
x
Go to SERsoft Diagnostics – Informations
x
Monitor the Encoder / Door Position information
and determine if the encoder is sensing door
movement. If not, Replace Encoder
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