Hitachi J300 Series Instruction Manual page 119

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* 1: Il fte desired characteristic cannot be obtained in a sensorless vector control oD€ration with
auto tuning measured data, adjust the motor constant according to the detected symptom shown
(DOP, DRW, HOP, and HRW functions of the rcmote operaror are needed for this adjustment.)
Operadon Status Symptom
AdJustment
AdjustinS Item
(DOPDRW Fundion No.)
Powerrunning
When low fr€quency Increase the mobr constanr Rl in r€lation to
tF-05 AUX Rll
Gtatus with an
(a fcw Hz) torque is
auto tuning data step by step wirhin 1.2 rimes.
accelerating torque) insuffi cienl
When $e sp€ed
lluctuation cc€ffi cient
lncrcasc the mobr constanr R2 in relaiion to
IF-05 AUX R2l
auto tuning data step by step within 1.2 times.
fluctuation c()efficient
Dccrcasc ihe motorconsranr R2 in relation ro
lF-05 AUX R2l
aulo tuning data srep by step within 0.8 tincs.
Regeneradon W})en low frequency
(status witb a (a few Hz) torquc is
decelerating torque) insuffi cicnt
i! Increasc the motor constant Rl in relation
to aulo tuning data sr,ep by step within 1.2
dmes-
lF,os AUX Rtl
?l Decrcas. the motor constanr M in relation
to auto tuning data step by sGp wi$in 0.8
tF,Os AUX Ml
it Decreas€ the carri€r frcquency s€t value. tF.36 CARRIER]
(mfordigital
Combine the methods Q_r to ,3 above to adjust
r
*2: If, when the sensorless vector is controlled, 2 frames or less maximum applicable motots are
t
operated. then the characteri\lic may not be sauslactory.
*3: No sensorless vector control opeaation is possible if plural motors are operated.
A-7