Malfunctions
9.1 Malfunction table
Malfunction
Possible cause
To repair malfunction
To be repaired by
The telescopic pillar
does not move
Control unit not operational Check mains power connection to control unit
Professional
electrician
Ensure that the operating device is connected
correctly
to the control unit
Qualified personnel
Ensure that the current limit of the control unit
matches the requirements defined in this manual
Qualified personnel
Consult the operating manual of the control unit
Qualified personnel
Operating device defective
Replace operating device
Qualified personnel
Consult the operating manual of the operating
device
Qualified personnel
Poor connector contact to
control unit
Ensure that the connector is inserted correctly
into the control unit
Operator
Incorrect load
Ensure that the load of the pillar does not exceed
the load limit in the technical specification
Qualified personnel
Obstacle in the stroke area
of the device
Remove all obstacles in the stroke area
Operator
Cable defective
Check cable for squeezing, tearing or other
damage
Professional
electrician
Motor has stopped due to
high temperature safety
shut off
Observe duty cycle in technical specification.
Wait 20 minutes and try again.
Qualified personnel
Device cannot be set in
motion by any of the
suggested repair measures
Contact SKF service
Qualified personnel
Lifespan of the drive is
exceeded
Replace the drive, if the drive is older than 10
years
Qualified personnel
The telescopic pillar
only operates in one
direction
Telescopic pillar reached
internal end limit switch
Operate in other direction
Operator
Control unit malfunction
Consult operating manual of control unit
Qualified personnel
Operating device
malfunction
Consult operating manual of operating device
Qualified personnel
Obstacle in the stroke area
of the device
Remove all obstacles in the stroke area
Operator
The telescopic pillar
stops before reaching
its maximum stroke
Control unit cuts off power
Ensure the centric and eccentric load does not
exceed the load limits given in the specification
Qualified personnel
Obstacle in the stroke area
of the device
Remove all obstacles in the stroke area
Operator
Significant reduction
in speed of
movement
Incorrect load
Ensure that the load of the pillar does not exceed
the load limit in the technical specification
Qualified personnel
Obstacle in the stroke area
of the device
Remove all obstacles in the stroke area
Operator
Motor, gearbox or nut
defective
Contact SKF service
Qualified personnel
Incorrect voltage set
Ensure the correct voltage is set
Qualified personnel
48
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