8.9.5
Brush faults
Modify the arrangement of brush components or the brush material only with the
manufacturer's agreement.
Table 8-5
Brush faults
Symptoms of fault
↓
Knocked out or shattered brush edges
↓
High degree of brush wear
↓
High degree of wear despite good commutation
Possible causes of faults
Remedial measures
Plant fault
X
Coupled motor out of balance
Check coupling, rebalance system
X
Poor alignment
Align motor set
X
Mechanical jolts
Improve installation conditions
Cooling fault
X
X
X
Cooling air too dry
Change brush material
X
X
Silicone in the cooling air
Remove silicone, clean machine and mounting
parts
X
Cooling air contains too much dust
Change air ducting, use an air filter
X
Cooling-air flow rate too low (commutator tempera‐
ture too high)
Improve cooling
Brush fault
X
X
Incorrect or unsuitable brush material
Change brush material
Component defect
X
X
Out-of-round commutator
Overrev commutator
X
X
X
Protruding segment insulation
Pocket mill segment insulation
X
Rotor imbalance
Balance rotor
Operation
8.9 Faults
SIMOTICS DC 1GG6
80
Operating Instructions 02/2016
Summary of Contents for SIMOTICS DC 1GG6
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Page 12: ...Table of contents SIMOTICS DC 1GG6 12 Operating Instructions 02 2016 ...
Page 14: ...Introduction 1 1 About these instructions SIMOTICS DC 1GG6 14 Operating Instructions 02 2016 ...
Page 70: ...Commissioning 7 8 Switch off SIMOTICS DC 1GG6 70 Operating Instructions 02 2016 ...
Page 82: ...Operation 8 9 Faults SIMOTICS DC 1GG6 82 Operating Instructions 02 2016 ...
Page 104: ...Maintenance 9 2 Repair SIMOTICS DC 1GG6 104 Operating Instructions 02 2016 ...
Page 138: ...Service and Support SIMOTICS DC 1GG6 138 Operating Instructions 02 2016 ...
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