Maintenance
‑89‑
Item Description Solution Checked
Load Check whether the running
current of the AC drive exceeds
the rated current of the AC drive
and motor.
● Check whether the motor parameters are
set correctly.
● Check whether the motor is overloaded.
● Check whether the mechanical vibration
is severe (allowed value: < 0.6 g).
Input voltage Check whether the voltage of the
main circuit power supply and the
control circuit power supply is
normal.
● Check whether the input voltage is within
the permissible range.
● Check whether startup of heavy load
exists.
9.1.2 List of Periodic Inspection Items
Check the items listed in the following table every one or two years, dependent on
actual use and work environment of the product. Periodic maintenance helps detect
product function deterioration and damage.
Copy this checklist and sign the "Checked" column after each inspection.
To prevent electric shock, do not perform inspection or wiring with power ON. Switch off
the power supplies of all the devices before wiring or maintenance. Wait for at least a peri‑
od of time specified on the product warning label before further operations because resid‑
ual voltage still exists after power‑off. Measure the DC voltage in the main circuit to ensure
the DC voltage is within the safe range; failure to comply may result in electric shock.
Inspection Item Description Solution Checked
General Check for waste, dirt, and dust on the
surface of the AC drive.
● Check whether the controller
cabinet is powered off.
● Use a vacuum cleaner to suck
up waste and dust to avoid
direct touching.
● Wipe stubborn stains with
alcohol and do not operate the
AC drive until the alcohol
completely evaporates.
Cables
● Check power cables and connections
for discoloration.
● Check wiring insulation for aging or
wear.
● Replace cracked cables.
● Replace damaged terminals.
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