8.10.2
Electrical faults at force-ventilated motors
Note
When operating the machine with a converter, also refer to the operating instructions of the
frequency converter if electrical faults occur.
Table 8-1
Electrical faults
↓ Motor fails to start
↓ Motor accelerates sluggishly
↓ Humming noise when starting
↓ Humming noise in operation
↓ High temperature rise under load
↓ High temperature rise of individual winding sections
Possible causes of faults
Remedial measures
X
X
Rotor (partially) demagnetized
Contact the Service Center.
X
X
X
X
Overload
Reduce the load.
X
Interruption of a phase in the
feeder cable
Check the frequency converters and feeder cables.
X
X
X
X
Interrupted phase in the feeder
cable after switching on
Check the frequency converters and feeder cables.
X
X
X
X Winding short circuit or inter-
phase short circuit in stator wind‐
ing
Determine the winding resistances and insulation resistan‐
ces. Contact the Service Center.
X
Converter output voltage too
high, frequency too low
Check the settings at the frequency converter and perform
the automatic motor identification.
X
External fan is not running
Check the external fan and its connections.
X
Reduced air intake
Check the air ducts; clean the machine.
8.10.3
Electrical faults at water-cooled motors
Note
When operating the machine with a converter, also refer to the operating instructions of the
frequency converter if electrical faults occur.
Operation
8.10 Faults
SIMOTICS M-1PH8 1PH818., 1PH822.
Operating Instructions 07/2016
97
Summary of Contents for 1PH818
Page 2: ...18 07 2016 14 04 V14 00 ...
Page 12: ...Introduction SIMOTICS M 1PH8 1PH818 1PH822 12 Operating Instructions 07 2016 ...
Page 28: ...Description SIMOTICS M 1PH8 1PH818 1PH822 28 Operating Instructions 07 2016 ...
Page 100: ...Operation 8 10 Faults SIMOTICS M 1PH8 1PH818 1PH822 100 Operating Instructions 07 2016 ...
Page 136: ...Quality documents SIMOTICS M 1PH8 1PH818 1PH822 136 Operating Instructions 07 2016 ...
Page 197: ...AA Manual STROMAG Break AC Manual Ziehl Abegg external fan ...