PS
S1.0
1700
001
Version no
T-code
F-code
Section
C-code
Drive Motor
68
Service Manual
1997-07-15
Machine Design
30. Commutating zone too narrow
31. Commutating zone too wide
32. Brushes too thin
33. Brushes too thick
34. Magnetic saturation of interpoles
35. High bar-to-bar voltage
36. High ratio of brush contact to commutator surface area
37. Insufficient cross connection of armature coils
Load or Service Condition
38. Overload
39. Rapid change of load
40. Reversing operation of non-interpole machine
41. Plugging
42. Dynamic braking
43. Low average current density in brushes
44. Contaminated atmosphere
45. “Contact poisons”
46. Oil on commutator or oil mist in air
47. Abrasive dust in air
48. Humidity too high
49. Humidity too low
50. Silicone contamination
Disturbing External Condition
51. Loose or unstable foundation
52. External source of vibration
53. External short circuit or very heavy load surge
54. “Commutation factor” too high
55. “Commutation factor” too low
56. Contact drop of brushes too high
57. Contact drop of brushes too low
58. Coefficient of friction too high
59. Lack of film forming properties in brush
60. Lack of polishing action in brush
61. Brushes too abrasive
62. Lack of carrying capacity
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Summary of Contents for OE35
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