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2.7.2 Periodic Inspection
Please perform periodic inspection on the places where the inspection is a
difficult thing.
Periodic inspection Items include:
1) Check and clean the air duct periodically;
2) Check if the screws are loosened;
3) Check if the driver is corroded;
4) Check if the wire connector has arc signs;
5. Main circuit insulation test
z When using the megameter (DC 500V megameter recommended) to
measure the insulating resistance, the main circuit shall be disconnected
with the servo driver. Do not use the insulating resistance meter to
control the insulation of the circuit. It is not necessary to conduct the
high voltage test (which has been completed upon delivery).
2.7.3 Replacement of Vulnerable Parts for Driver
The vulnerable parts of the driver include cooling fan and filter electrolytic
capacitor, whose service life depends on the operating environment and
maintenance status. General service life is shown as follows:
Part name Service Life
fan 2 to 3 years
electrolytic
capacitor
4 ～ 5 years
The user can determine the year of replacement according to the operating
time.
1) Cooling fan
Possible reason for damage: Bearing is worn and blade is aging.
Judging criteria: Whether there is crack on the blade and whether there is
abnormal vibration noise upon startup.
2) Filter electrolytic capacitor
Possible reason for damage: Input power supply in poor quality, high ambient
temperature, frequent load jumping, and electrolyte aging.
Judging criteria: Whether there is liquid leakage and whether the safe valve
has projected, and measure the static capacitance, and the insulating
resistance.
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