Omron MX2 Series User Manual

11 Maintenance and Inspection
12 - 7
Multi-function Compact Inverter 3G3MX2-EV2 User’s Manual (I666-E1)
11-1-4 Daily/Periodic Inspection Items
Inspection
category
Inspection
item
Inspection
point
Inspection
frequency
Inspection method
Criteria
Meter
Daily
Periodic
1 year
2 years
General
Ambient
environment
Check ambient
temperature,
humidity, and
dust.

Refer to 2-1 Installation
on page 2-5.
Ambient tempera-
ture: −10 to 50°C, no
freezing
Operating humidity:
90% max., no con-
densation
Thermometer
Hygrometer
Recorder
Entire
system
Check for
abnormal vibra-
tion and sound.

Perform visual and
acoustic inspection.
No faults
Power
supply
voltage
Check main cir-
cuit voltage.

Measure line voltage
between inverter main
circuit terminals R/L1,
S/L2, and T/L3.
Within allowable AC
voltage fluctuation
range
Tester,
digital
multimeter
Main
circuit
General
Perform meg-
ger check
(between main
circuit terminals
and ground ter-
minal).

Disconnect I/O wires
from the inverter main cir-
cuit terminal block and
remove the control circuit
terminal block PCB.
Then, after removing the
short-circuit bar for
switching the inverter
built-in filter function,
measure using a megger
the resistance between
the ground terminal and
the short-circuited termi-
nals R/L1, S/L2, T/L3,
U/T1, V/T2, W/T3, P/+,
+1, N/-, and RB.
5 M min.
500-VDC
class
megger
Check for loose
bolts and
screws.

Retighten loose bolts and
screws.
No faults
Check each part
for traces of
overheating.

Perform visual inspec-
tion.
No faults
Conductor/
wire
Check for dis-
torted conduc-
tor.

Perform visual inspec-
tion.
No faults
Check for bro-
ken cable
sheaths.

Terminal
Blocks
Check for dam-
age.

Perform visual inspec-
tion.
No faults
11
11-1 Maintenance and Inspection
11-1-4 Daily/Periodic Inspection Items

Omron MX2 Series Specifications

General

Brand	Omron
Model	MX2 Series
Category	Inverter
Language	English