Omron M1 Series User Manual page 540

10 Maintenance and Inspection
Inspec-
Inspec-
tion cat-
tion item
egory
Main cir- General
cuit
Conduc-
tors/wires
Terminal
Blocks
Smooth-
ing ca-
pacitor
10-4
Inspec-
tion fre-
quency
Inspection
Peri-
point
Perform meg-
ger check
(Between main
circuit termi-
nals and
ground termi-
nal).
Check for
loose bolts and
screws.
Check each
part for traces
of overheating.
Check for dis-
torted conduc-
tors.
Check for bro-
ken cable
sheaths.
Check for dam-
age.
Check that
there is no liq-
uid leakage.
*1
Check that the
safety valve
does not come
out and that
there is no
bulge.
Inspection method
odic
Disconnect I/O wires
from the inverter
main circuit terminal
block and remove
the control terminal
block PCB. Then, af-
ter removing the
short-circuit bar for
switching the inverter
built-in filter function,
measure using a
megger the resist-
ance between the
ground terminal and
the short-circuited
terminals L1/R, L2/S,
L3/T, U, V, W, P(+),
P1, N(-) and DB.
Retighten loose bolts
and screws.
Perform visual in-
spection.
Perform visual in-
spection.
Perform visual in-
spection.
Perform visual in-
spection.
M1 Series EtherCAT Type User's Manual (I670)
Criteria Meter
5 MΩ min. 500-VDC
class
megger
No faults
No faults
No faults
No faults
No faults Capacity
meter