Mitsubishi Electric E80 Series, Maintenance Manual

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M800/M80/E80 Series Maintenance Manual
3 Maintenance of the Drive Unit
53 IB-1501273-F
3.2 Durable Parts
A guide to the part replacement cycle is shown below. Note that these will differ according to the working conditions or en-
vironmental conditions, so replace the parts if any abnormality is found. Contact Mitsubishi branch or your dealer for repairs
or part replacements.
[MDS-E/EH Series]
[MDS-EJ/EJH Series]
[MDS-EM/EMH Series]
(1) Power smoothing capacitor:
The characteristics of the power smoothing capacitor will deteriorate due to the effect of ripple currents, etc. The ca-
pacitor life is greatly affected by the ambient temperature and working conditions. However, when used continuously
in a normal air-conditioned environment, (ambient temperature is an average of 40°C or less) the service life will be ten
years.
(2) Relays:
Contact faults will occur due to contact wear caused by the switching current. The service life will be reached after
100,000 cumulative switches (switching life) although this will differ according to the power capacity.
(3) Servo motor bearings:
The motor bearings should be replaced after 20,000 to 30,000 hours of rated load operation at the rated speed. This
will be affected by the operation state, but the bearings must be replaced when any abnormal noise or vibration is found
in the inspections.
(4) Servo motor oil seal, V-ring:
These parts should be replaced after 5,000 hours of operation at the rated speed. This will be affected by the operation
state, but these parts must be replaced if oil leaks, etc., are found in the inspections.
Part name Standard replacement time Remarks
Servo drive unit Smoothing capacitor 10 years The standard replacement time is
a reference. Even if the standard
replacement time is not reached,
the part must be replaced if any ab-
normality is found.
Cooling fan 10,000 to 30,000 hours (2 to 3 years)
Battery 10,000 hours (for MDS-BAT6V1SET,
MDSBTBOX-LR2060)
Servo motor Bearings 20,000 to 30,000 hours
Encoder 20,000 to 30,000 hours
Oil seal, V-ring 5,000 hours
Part name Standard replacement time Remarks
Servo drive unit Smoothing capacitor 10 years The standard replacement time is
a reference. Even if the standard
replacement time is not reached,
the part must be replaced if any ab-
normality is found.
Cooling fan 10,000 to 30,000 hours (2 to 3 years)
Battery 10,000 hours (for MR-BAT6V1SET)
Servo motor Bearings 20,000 to 30,000 hours
Encoder 20,000 to 30,000 hours
Oil seal, V-ring 5,000 hours
Part name Standard replacement time Remarks
Servo drive unit Smoothing capacitor 10 years The standard replacement time is
a reference. Even if the standard
replacement time is not reached,
the part must be replaced if any ab-
normality is found.
Cooling fan 10,000 to 30,000 hours (2 to 3 years)
Battery 10,000 hours (for MR-BAT6V1SET,
MDSBTBOX-LR2060)
Servo motor Bearings 20,000 to 30,000 hours
Encoder 20,000 to 30,000 hours
Oil seal, V-ring 5,000 hours