23 01/2018 - V1
Classic
P3 60-150 A
Faults
Er
ro
r d
iag
no
sis
7
Faults
7.1
Error diagnosis
Error diagnosis
Malfunction
Causes
Motor does not run
-Wrong power supply and motor connections
-Activated fuses
-Missing enable or command value
-Current limit too low
-Missing BTB
Motor speeds up
-Wrong polarity of the actual value
(Tacho armature voltage)
-Values of the tacho switch S9 too low
-Command value too high
For armature voltage control
-Field current too low
-Fuses, armature voltage feedback activated
Motor runs unsteadily
-Mechanical defect of the tacho
-Tacho malfunction
-Amplification on the speed controller too low or too high
-Wrong PID parameter
-Command value errors
-Amplification of the current controller too low or too high
No motor torque
-Current limits too low
-Field current too low
-Mechanical overload of the axis
