Omron RX2 Series User Manual page 800

13 Maintenance and Inspection
Target
Item
section
Control
circuit
Operation
Protec-
check
tive
circuit
Cooling fan
Cooling
system
Cooling fin
Indication
Indication
External
meter
General
Motor
Insulation
resistance
*1. The replacement period (number of years/cycles) and 13-5-5 Smoothing Capacitor Life Curve on page 13-13
are based on the designed expected life, which is not a guaranteed value.
*2. The service life of smoothing capacitor is affected by the ambient temperature. See 13-5-5 Smoothing Capac-
itor Life Curve on page 13-13 to determine replacement period.
13 - 6
Interval
Periodic
Details
Daily
1
year
(1) Through unit
operation of
inverter, check
balance of out- ○
put voltage
between each
phase.
(2) By conduct-
ing the sequence
protective opera-
tion test, check
there is no abnor- ○
mality in protec-
tive operation
and display cir-
cuit.
(1) No abnormal
vibration or
○
sound is
observed.
(2) Connections
○
are not loosened.
There is no
○
clogging.
(1) The LED lamp
and screen dis- ○
play are normal.
(2) Cleaning. ○
The indicated val-
○
ues are normal.
(1) No abnormal
vibration or
○
sound is
observed.
(2) No abnormal
smell is ○
observed.
Megger check
(between the
main circuit termi-
nals and earth
terminals)
High-function General-purpose Inverter RX2 Series User's Manual
Method
2
years
Inter-phase voltage
Measure line volt-
balance
age between
200 V class: To be
inverter main circuit
within 4 V.
terminals U, T, and
400 V class: To be
W.
within 8 V.
Simulate short or
The error is
open condition of the
generated on the
protective circuit
sequence.
output of inverter.
By hearing and To rotate smoothly.
visual check. There must be no
(Warning indication abnormality. Wind
on the operator brows in upper sec-
keypad) tion.
Appropriate service
years for replace-
By visual check.
ment: 10 years
By visual check. There is no clogging.
Check the lamp/dis-
By visual check.
play lights up.
Clean with a waste
cloth.
Check indicated Satisfy the
values of the meters specification values
on the boards. and control values.
By hearing, sensing, There must be no
and visual check. abnormality.
Check for abnormal
smell due to There must be no
overheat, damage, abnormality.
etc.
Disconnect U, V, and
W inverter main cir-
cuit terminals, short
the motor line (for
The measured value
three phases), and
*6
shall be 5 MΩ or
perform measure-
above.
ment between the
motor wire and earth
terminal using a
megger.
Mea-
sure-
Criteria ment
instru-
ment
Digital
multime-
ter
Flowme-
ter
Voltmeter
*1 *4 *5
Voltme-
ter,
amme-
ter, etc.
500-VDC
class
megger