Omron SYSDRIVE MX2 SERIES User Manual page 388

8-1 Inspection and Maintenance
Inspection
part
Cooling
system
Fault
display
Motor
8
*1.Smoothing capacitor life depends on ambient temperature.
Refer to " Appendix-2 Smoothing Capacitor Life Curve" for the replacement reference.
*2.The life of the cooling fan varies depending on the environmental conditions, such as ambient
temperature and/or dust. Check the operation through daily inspections.
*3.The replacement reference (year/cycles) and diagram of smoothing capacitor life are based on the
expected design life, which is not guaranteed.
8-5
Inspection
Inspection point
item
Cooling Check that there
fan are no abnormal
vibrations or
sounds.
Check that the
connection parts
are secure.
Cooling Check that there
Fin is no clogging.
Fault Check that the
display LED indicators
are lit properly.
Cleaning
Meter Check that the
indicated value is
normal.
General Check that there
are no abnormal
vibrations or
sounds.
Check that there
are no abnormal
odors.
Insulation Megger check
resistance (Between the
collective motor
terminals and
ground terminal)
Inspection
period
Periodic
Inspection
method
√
Rotate manually
when the power is
off.
√ Visual inspection
√
Visual inspection
√ Visual inspection
√
Clean with a
waste cloth.
√ Check the indicated
values on the panel
meters.
√
Acoustic, feeling,
and/or visual
inspection
√
Check that there
is no abnormal
odor caused by
damage or
overheating.
√
Disconnect
Inverter main
circuit terminals
U/T1, V/T2, and
W/T3, and short-
circuit the motor
wires (3 phases).
Then, use a
megger to
measure the
resistance
between the
motor wires and
ground terminal.
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
Measurement
Criteria
device
Rotation shall be
smooth and free
from error.
Reference of the
replacement period:
*2 , *3
10 years
No clogging.
Check that the
LED indicators
are lit.
The specified or Voltage,
control values Ammeter,
must be satisfied. etc.
No faults
No faults
5 MΩ min. 500 V
class DC
megger