Omron RX - 2, Руководство пользователя

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13 - 5
13 Maintenance and Inspection
High-function General-purpose Inverter RX2 Series User’s Manual
1
3-3 In
spection
Item
s
13
Main
circuit
General
(1) Megger check
(between the
main circuit termi-
nals and earth
terminals)
○
Remove the
input/output wires of
main circuit terminal
block of the inverter,
remove the control
terminal block board,
then, remove the
short bar for switch-
ing the functions of
filter included in the
inverter. Then, using
a megger, perform
measurement
between each por-
tion where R, S, T,
U, V, W, P, PD, N,
RB, R0, and T0 ter-
minals are shorted
and earth terminal.
The measured value
shall be 5 MΩ or
above. 500-VDC
class
megger
(2) Fastened por-
tions are not
loosened.
○
Re-tighten the
portion. There must be no
abnormality.
(3) No residual
mark of overheat
is observed on
each component.
○ By visual check.
There must be no
abnormality.
Connected
conductor and
wire
(1) The conductor
is not distorted.
○
By visual check.
There must be no
abnormality.
(2) The coatings
of wires are not
torn.
○
Terminal block
It is not
damaged.
○ By visual check.
There must be no
abnormality.
Inverter
Converter
(including
resistor)
Check
resistance
between each
terminal
○
Remove the wires of
the main circuit ter-
minal block of
inverter, and perform
measurement
between terminals
R, S, T and termi-
nals P, N, and
between terminals
U, V, W and termi-
nals P, N at the
range of tester ×1 Ω.
See 13-5-3 Checking
Method of Inverter
and Converter
on
page 13-10
.
Appropriate replace-
ment interval of
inverter, converter,
and thyristor
Start/stop: 10
6
cycles
*1
Analog
tester
Smoothing
capacitor
(1) There is no
leakage of fluid.
○
By visual check.
There must be no
abnormality.
Appropriate service
years for replace-
ment: 10 years
*1 *2 *3
(2) The belly
(safety valve)
shall not stick
and there shall
be no bump.
○
Relay
(1) There shall be
no beat noise
during operation.
○ By hearing.
There must be no
abnormality.
(2) There are no
worn contacts.
○ By visual check.
There must be no
abnormality.
Target
section
Item Details
Interval
Method Criteria
Mea-
sure-
ment
instru-
ment
Daily
Periodic
1
year
2
years