Problem
The actuator does not trans- mit the correct position after a power loss
There is a rapid clicking noise when the motor is operating
The motor operates in one direc- tion only
The motor will not move in either direction
The motor runs intermittently, several minutes on, several min- utes off
Reason
The motor was manually moved while the position sensor was not powered.
The motor brake is not working properly
The position sensor’s EEPROM memory has failed
The photochopper is misaligned with the slotted optocouplers
The photochopper is positioned too low on the motor shaft.
A motor bearing has failed
There is a loose connection in the screw terminal blocks
There is a loose or dirty connection in the yellow Turck cable
The position sensor has failed
There is a broken motor lead or winding
The thermal switch has tripped because the motor is overheated
Any of the reasons listed in “The motor operates in one direction only”
The command shaft is jammed
Broken gears in the gearmotor
Motor is overheating and the ther- mal switch is tripping
Solution
Recalibrate.
Get the motor brake to where it operates freely and then recalibrate.
Replace the actuator.
Try to realign or replace the actuator.
Adjust the photochopper so that the fence extends further into the optocoupler slots.
Replace the actuator.
Tighten.
Clean and tighten.
Replace the actuator.
Replace the actuator.
The motor will resume opera- tion when it cools. This could be caused by a malfunction- ing control panel. Consult the factory.
See above.
Free the command shaft.
Replace the actuator.
This could be caused by a malfunctioning control panel. Consult the factory.
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