Hitachi J300 Series Instruction Manual page 76

Symprom
\OTE l: The failures detecuble in $e powermodule are ovcrcuncnls, cxccssively hot main devices, and insufficienl
vohages from the gate circuit power supply-
g_3
Cause
(explanation
ol message)
a
a
Check
;
t
Display on rhe
LCD of the
digiral op€mlor
(djsplay on the
LCD ol the
remole operalor)
a
E 1 4
( G N D . F l t )
o
Ground fault on fic
output side of$e
Chelk tE viring betveen $e
invener and motor and also
check dle notor fix a ground
fault. (Usc a megger.)
Conect the portions havine
a ground fault.
E 1 5
( O V , S R C )
o
voluge
Check whether an
rcccivedduringan
. t wef thc vohage lobc
. Reduces fluctuations
of
the received voltage.
. Install an AC .eactor on
fte input side.
E 1 6
( I n s t . P - F )
o
power oulage)
Check whe$er de vohage Reltore fte power supply
Check whe$er the MCB or
Mg har a pmr conbcl.
Replace the MCB or Mg.
E 1 7
( N G . O P 1 )
o
oplon I PC board
Check the conncctors and Rcpair $c defective
E 1 B
( N G . O P 2 )
o
oprion 2 rc borrd
Check the connecton and Rcpair lhc defective
E 1 9
( o P 1 )
cl
Dettcrivc option I PC
Reier 10 the instruction
t r z u
( o P 2 )
o
Defeclive option-2 PC Rciir to the inslruction
E 2 4
( P H . F a i 1 )
o
Dclcctivc power
supply (mrssing phasc)
Check the power supply
connections
for abnotnal
Repair rhc abnonnal
Check whelher the MCB or
Mg has a poof contact.
Replace rhe MCB orMB.
E 3 1
( P M . D r i v c )
c
(NOTEI) Failurcderckd
Fmlure rise in lhe Mvener
Check whether a load was
changed tupidly.
Do nor change loads
npidly.
Check whether there is a
shoncd outpui or ground
Check whether the oulput
lines ormotor is shoned-
E 3 2
( P M . D e c e l )
o
(NOTI l) Failur. dcre!.r.d
Check whethcr the spccd
was decrcascd rapjdly.
Scl a longcr dccclcnrion
d m e .
Chcck whcthcr thcrc is a
shoned ourput or ground
Check shether fte output
lines ormotor is shoned.