12·1 Possible Causes And Countermeasures - Toshiba TOSVERT-130H Instruction And Maintenance Manual

Table 12"1 Possible Causes and Countermeasures (1/5)
1' -
Failure"---
code
Possible cause
f---I~I~mp
roper inverter sizing in relation
,-,
,-
t.1
t..
Flicker
display
otor size or load type.
I
to
m
I - -
I
Sho
--~---
rt"circuit on output wiring
U), T2(V), T3(W)
I
T1(
Pha se to phase or ground fault.
1-
!
Ove r)oad, sudden load fluctuation
I
or
s
tall of motor
-_.-
,
I
Acc e) erat
i
onld ecel eration
,
tim e set too short
I
'-~
..
,
I
1 " , -
I'
Ins tability phenomenon due to
I
an open input phase (including
one
i __
Inte
of the input fuses blowing)
~.--
rnal fault of inverter
1-
---------_.-
Inst ability phenomenon due to
,
1
Corrective Actions
I
Corrective inverter capacity based
on current requirements.
!
Ins~ect
wiring from the inverter
I
to the motor. Ensure motor has
not grounded.
!
Inspect load level, eliminate cause
~.~
I
of the overload or
r~duce
load.
I
Extend the accelerationl
I
deceleration time by adjusting
, 5RH(ACC)/6RH(DEC) in
,
adjustment area.
Inspect power source and input
fuses. If damaged, replace.
I
I
Based on troubleshooting,
inspect internal wiring and
I
correct any shorts.
I
Select proper'0 IF pattern on
rrect V/F pattern of selection selector switch in the adjustment
i inco
J
: with respect to the I"oa"d _ _ ., _____ ."ar .. ,."a", _ _ _ _ _ _ ,, _ _ _ _ _
..J
I
characteristics,
--- -
- - - -
.
- - "
~
- -
~ ~--~
12,2