LS LSLV-iV5 Series, Руководство пользователя

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9. Inspection and Replacement
9-3
Area
Ch
e
c
k
ing
point
s
Description How to Check Judgment Criterion
Ins
trument
Res
is
tan
c
e
1) Isn't there any
damage to the insulation
resistance?
2) Check the existence
of the clue
1) Check by eyes.
2) Remove the
connection at one side,
and measure it using a
tester.
1) There must be no
unusual record
2) It should be within
±10% tolerance range
Di
g
ita
l M
ul
ti
-
Me
ter/
A
na
lo
g Tes
ter
Di
od
e,
IG
B
T
Check if they are stained
with trash or dust
Check by eyes.
Remove them by
blowing a dry air.
-
Ci
rc
ui
t
B
o
ard
1) Check if they generate
unusual smell are
discolored, rusted,
covered with dust or oil
mist
2) Check if the connector
is mounted
Check by eyes
1) Clean it using anti-
static cloth or cleaner. If
not, replace with new
circuit board
2) Do not clean the
circuit board using the
solution.
3) Remove trash or dust
by blowing a dry air.
4) Mount the connectors
again.
5) If the damaged area
cannot be repaired or is
the part that cannot be
replaced, replace the
inverter itself.
-
Cont
ro
l c
ir
c
ui
t
protec
ti
ng
c
ir
c
u
it
O
pe
rati
on
1) Check the unbalance
of the output voltage
during the operation of
inverter
2) Display circuit must
not have any unusual
phenomenon after the
sequence protecting
operation test is done
1) Measure the voltage
among the U, V, and W
at the Inverter output
terminal.
2) Have the inverter
protecting circuit output
shorted out or open it by
force.
1) Balance of inter-phase
voltage
200V (400V) Use: Within
4V(8V)
2) Unusual circuit to be
operated in sequence
Di
g
ita
l M
ul
ti
-Me
ter/
DC ty
pe
V
o
lt M
ete
r
Cool
in
g S
y
s
te
m
Cool
in
g f
a
n,
Cool
in
g p
in
1) Isn't there any
looseness on the
junction?
2) Isn't cooling pin or
cooling fan covered with
dust
1) Fasten it once again.
2) Check with eyes and
then remove dust
1) There must be no
unusual record
2) There must be no dust
-