Omron MX2 Series - Page 577

11 Maintenance and Inspection
12 - 9
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
Inspection
category
Inspection
item
Inspection
point
Inspection
frequency
Inspection method
Criteria
Meter
Daily
Periodic
1 year
2 years
Display
Indicator
Check that the
LED indicators
are lit properly.

Perform visual inspec-
tion.
The LED indicators
are lit.
Perform clean-
ing.

Clean it with a waste
cloth.
Meter
Check indi-
cated value.

Check the indicated val-
ues on panel meters.
Specified value, con-
trol value
Voltmeter,
ammeter,
etc.
Motor
General
Check for
abnormal vibra-
tion and sound.

Perform acoustic, sen-
sory, and visual inspec-
tion.
No faults
Check for
abnormal odor.

No abnormal odor due to
overheating, damage,
etc.
No faults
Isolation
resis-
tance
Perform meg-
ger check
(between motor
terminals and
ground termi-
nal).

Disconnect wires from
the inverter main circuit
terminals U/T1, V/T2,
W/T3 and short-circuit
the 3-phase motor wires.
Then, use a megger to
measure the resistance
between each motor wire
and the ground terminal.
5 M min.
500-VDC
class
megger
*1. The capacitor service life is influenced by the ambient temperature.
For the inverter replacement guideline, refer to A-2 Smoothing Capacitor Life Curve on page A-7.
*2. The life of the cooling fan depends on environmental conditions, such as the ambient temperature and/or dust.
Check the operating conditions in daily inspection.
11
11-1 Maintenance and Inspection
11-1-4 Daily/Periodic Inspection Items