Siemens SIMOTICS DC 1GG5 User Manual

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 1GG5
78 Operating Instructions 02/2016

Siemens SIMOTICS DC 1GG5 Specifications

General

Brand	Siemens
Model	SIMOTICS DC 1GG5
Category	Engine
Language	English