Kollmorgen EB-10 Series, Instruction Manual

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Goldline EB Instructions | 1 English
1.6.5 Troubleshooting
The following table is to be seen as a “First Aid” box. There can be a large number of different
reasons for a fault, depending on the particular conditions in your system. The fault causes
described below are mostly those which directly influence the motor. Peculiarities which show up in
the control loop behaviour can usually be traced back to an error in the parameterization of the
servo amplifier. The documentation for the servo amplifier and the setup software provides
information on these matters.
For multi-axis systems there may be further hidden reasons for faults.
Fault Possible cause Measures to remove the cause of the fault
Motor doesn’t
rotate
l
Servo amplifier not enabled
l
Break in setpoint lead
l
Motor phases in wrong
sequence
l
Brake not released
l
Drive is mechanically blocked
l
Supply ENABLE signal
l
Check setpoint lead
l
Correct the phase sequence
l
Check brake controls
l
Check mechanism
Motor runs
away
l
Motor phases in wrong
sequence
l
Correct the phase sequence
Motor
oscillates
l
Break in the shielding of the
feedback cable
l
Amplifier gain to high
l
Replace feedback cable
l
Use motor default values
Error
message:
brake
l
Short-circuit in the supply
voltage
lead to the motor holding brake
l
Faulty motor holding brake
l
Remove the short-circuit
l
Replace motor
Error
message:
output stage
fault
l
Motor cable has short-circuit or
earth short
l
Motor has short-circuit or earth
short
l
Replace cable
l
Replace motor
Error
message:
feedback
l
Feedback connector is not
properly
plugged in
l
Break in feedback cable, cable
crushed or similar
l
Check connector
l
Check cables
Error
message:
motor
temperature
l
Motor thermosensor has
switched
l
Loose feedback connector or
break in feedback cable
l
Wait until the motor has cooled down.
Then investigate why the motor becomes
so hot.
l
Check connector, replace feedback cable
if necessary
Brake does not
grip
l
Required holding torque too
high
l
Brake faulty
l
Motor shaft axially overloaded
l
Check the dimensioning
l
Replace motor
l
Check the axial load, reduce it. Replace
motor, since the bearings have been
damaged
16 Kollmorgen | kdn.kollmorgen.com | August 2021