MPC ATD ACTUATOR 50 ATD-313186 - Manual (Page 28)

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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