Pilz PMCtendo SZ Series Operating Manual page 41

Commissioning
Fault
Motor shaft turning un-
controlled (positive feed-
back)
Motor vibrates
Output-stage error mes-
sage (at the servo ampli-
fier)
Feedback error message
(at the servo amplifier)
Motor temperature mes-
sage (at the servo ampli-
fier)
Motor brake not effective
Operating Manual PMCtendo SZ
1002405-EN-04
Possible fault causes
Incorrect feedback offset
Motor phases reversed
(swapped cyclically, cor-
rect rotating magnetic
field)
Feedback cable shield
disconnected
Incorrect control parame-
ters
Motor line short-circuited
or has ground fault
Motor short-circuited or
has ground fault
Feedback plug connector
not inserted correctly
Feedback cable discon-
nected, crimped, etc.
Connection to the thermal
motor protection inter-
rupted
Thermal motor protection
has activated
Required torque too high
Motor brake defective
Motor shaft axially over-
loaded
Measure
Check the feedback offset and set
it correctly if necessary
Change the direction of the ro-
}
tating magnetic field on the
servo amplifier
Set the motor phases correctly
}
Apply the shielding to the feed-
}
back cable
Replace the cable if necessary
}
Adjust the control parameters in
the servo amplifier
Replace the cable
Replace the motor
Check the plug connections
Check the cables
Apply the shielding to the feed-
}
back cable
Check the cables
}
Check the thermal situation at
}
the installation location
Use forced ventilation units if
}
necessary
Check the layout of the motor
brake
Replace the motor
Check the axial load and reduce it
as needed; replace the motor be-
cause the bearings are damaged
41