Table 8-1
Electrical faults
↓ Motor fails to start
↓ Motor accelerates sluggishly
↓ Humming noise when starting
↓ Humming noise in operation
↓ High temperature rise during no-load operation
↓ High temperature rise under load
↓ High temperature rise of individual winding sections
Possible causes of faults
Remedial measures
X
X
X
X
Overload
Reduce the load.
X
Interruption of a phase in the
supply cable
Check frequency converters and supply cables.
X
X
X
X
Interruption of a phase in the
supply after switching on
Check frequency converters and supply cables.
X
X
X
X Winding short circuit or phase
short circuit in stator winding
Determine the winding and insulation resistances. Con‐
tact the Service Center.
X
Converter output voltage too
high, frequency too low
Check the settings at the frequency converter and per‐
form the automatic motor identification.
X
External fan is not running
Check the external fan and its connections.
X
Wrong direction of rotation of the
external fan
Check the electrical connections to the external fan.
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.
Table 8-2
Electrical faults
↓ Motor fails to start
↓ Motor accelerates sluggishly
↓ Humming noise when starting
↓ Humming noise in operation
↓ High temperature rise during no-load operation
↓ High temperature rise under load
↓ High temperature rise of individual winding sections
Possible causes of faults
Remedial measures
X
X
X
X
Overload
Reduce the load.
X
Interruption of a phase in the feeder
cable
Check the frequency converters and feeder cables.
Operation
8.10 Faults
SIMOTICS M-1PH8 1PH818., 1PH822., 1PH828.
Operating Instructions 10/2017
101
Summary of Contents for SIMOTICS M-1PH818
Page 2: ...20 10 2017 15 09 V20 00 ...
Page 14: ...Introduction SIMOTICS M 1PH8 1PH818 1PH822 1PH828 14 Operating Instructions 10 2017 ...
Page 28: ...Description SIMOTICS M 1PH8 1PH818 1PH822 1PH828 28 Operating Instructions 10 2017 ...
Page 104: ...Operation 8 10 Faults SIMOTICS M 1PH8 1PH818 1PH822 1PH828 104 Operating Instructions 10 2017 ...
Page 166: ...Quality documents SIMOTICS M 1PH8 1PH818 1PH822 1PH828 166 Operating Instructions 10 2017 ...
Page 171: ...171 ...
Page 172: ...172 ...
Page 173: ...173 ...
Page 174: ...174 ...
Page 175: ...175 ...
Page 176: ...176 ...
Page 177: ...177 ...
Page 178: ...178 ...
Page 179: ...179 ...
Page 180: ...180 ...
Page 181: ...181 ...
Page 182: ...182 ...
Page 183: ...183 ...
Page 184: ...184 ...
Page 185: ...185 ...
Page 186: ...186 ...
Page 187: ...187 ...
Page 188: ...188 ...
Page 189: ...189 ...
Page 190: ...190 ...
Page 191: ...191 ...
Page 192: ...192 ...
Page 278: ...278 ...
Page 308: ...308 ...