Mitsubishi Electric MELDAS MDS-B-SVJ2 Series, Specifications And Instruction Manual

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Chapter 12 Inspections
12-2
12-1 Inspections
Periodically inspecting the following points is recommended.
①
Are any screws on the terminal block loose? Tighten if loose.
②
Is there any abnormal noise from the servomotor bearings or the brakes?
③
Are any of the cables damaged or cracked? If the cable moves with the machine, carry out a
periodic inspection according to the usage conditions.
④
Is the axis at the load coupling section misaligned?
12-2 Life parts
The guidelines for the part replacement interval are as shown below. These will differ according to the
usage methods and environmental conditions, of if an abnormality is found, the part must be replaced.
Contact your dealer for repairs and part replacements.
Part name Standard replacement time Remarks
Smoothing capacity 10 years
Relay –
Cooling fan 10,000 to 30,000 hours
(2 to 3 years)
Servo amplifier
Battery 10,000 hours
Bearings 20,000 to 30,000 hours
Detector 20,000 to 30,000 hours
Servomotor
Oil seal, V-ring 5,000 hours
The standard replacement time is a
reference time. If an abnormality is
found before the standard
replacement time is reached, the part
must be replaced.
①
Smoothing capacitor : The smoothing capacitor characteristics will deteriorate due to the effect
of the ripple current, etc. The capacitor life will be greatly affected by the
ambient temperature and usage conditions, but when run continuously in
a normal air-conditioned environment, the life will be reached in 10 years.
②
Relays : Contact defects will occur due to contact wear caused by the switching
current. This will differ according to the power capacity, but the life will be
reached at a No. of cumulative switches (switching life) of 100,000 times.
③
Servomotor bearings : When used at the rated speed and rated load, replace the bearings after
about 20,000 to 30,000 hours. This will differ according to the operation
state, but if abnormal noise or vibration is found during the inspection, the
bearings must be replaced.
④
Servomotor oil seal, V-ring: These parts must be replaced after about 5,000 hours of operation at the
rated speed. This will differ according to the operation state, but these
parts must be replaced if oil leaks, etc., are found during the inspection.
DANGER
1. Wait at least 10 minutes after turning the power OFF and check that the
input/output and voltage are zero with a tester, etc., before starting wiring or
inspections. Failure to observe this could lead to electric shocks.
2. Only qualified persons must carry out the inspections. Failure to observe
this could lead to electric shocks. Contact your dealer for repairs or part
replacements.
CAUTION
１．
Do not perform a megger test (insulation resistance measurement) on the
servo amplifier. Failure to observe this could lead to faults.
２． Never disassemble or modify the unit.