Hitachi J300 Series Instruction Manual page 80

I
Symptom
. Afterchecking the wiring of
the frequcncy setter, $e rpm srill
does nol increase wh€n the setrer
is tumed.
. Replace the frequency setter
. Are terminals 7 and P24,lenninal 6
and P24 ON (Source type)?
. Tum offterminal7 and 6. (When lhe
frequenc-y and mulrisrage speed are fired ar
a grven rrequency. rhe speed potentlometer
will bc invalid.)
. Is the load too greal?
. Decrcase the load,
. when lhe load is roo areat. the limitms
lirnLtlon will be ac !tteJ. so rhar
the rotational spced will be low€r than
tne sctlmg.
: I n c
. Is the maximum frequency seuing
. Arc lhe number ofmotorpoles,
lhc gcar mtio, and pullcy ratio con€ct?
- Check the speed-change
ralio.
:.lc dala The data is
the initial
ser0ng.
. Thc STN terminal is tumed ON and the
powcr rs umeo on_
. The input terminals I to 5 are tumed
ON and then power is lumed on.
. Tum ihe STN tcrminal OFF.
.Input tie data again.
. Replace the logic PCB.
The data has
not changed,
. Was the power tumed offwithour
ou,ntn, *" ffi
kcy afier rhe dara
was changed with @p
teys.
.lnput rhc dala and push th.
ffi
rcl -*.
. The data is memorized upon power oft
ls thc dme from powcr OFF to ON less
. Take six s€conds or rnore when tuminq Dower
OFF and ON after chrnging $e dala.
- -
Datacopied
0y.|ne copy
.Is ihc power tumed off lbr five seconds
or rnorc afier the display changed
fiom REMT ro INv
(HRW OJ)
. Copy again and tum the powerofTfivc
scconds or more alier copying.
lle dala
-nangeo.
s€tting can
changed.
Run and
. The changc of rhe brminalmodc and
digilal operator mode were conect?
. Confirm the ctrange in |FIS
setring mode.
The daia can
cnangeo.
' Is lhe input lcrminal SFT ON ?
. Is lhe software lock mode set al MD2
or MDI ?
. Tum ihc switch OFF.
Notc: If software lock is ON because of
use wi$ an explosion pmof moror,
do not release thc soflware locks.
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