6. Control Functions and Parameter Settings
6-44
B13-6
ASR gain compensation in constant power range
B13-7
ACR gain compensation in constant power range
Increase or decrease each ASR gain and ACR gain in power constant speed range.
B 1 3 -6
B 1 3 -7
M a x sp e ed
(B 01 -4 )
B a se sp e ed
(B 01 -5 )
1 00 %
A S R g ain
M o tor spe e d
B14-0
ASR dead band setting
Refer to Fig. 5-1 for details.
B15-0
Machine time constant 2
This is used to calculate the ASR gain. This is valid when the sequence input machine time
constant changeover is ON (MCH = ON).
TM [s] =
B17-0~3
V/f middle point
1 00 %
B 17-1
B 17-3
Vo ltag e
F req ue nc y
B 1 7-0
B 0 0-5
B a se
F r e qu e n c y
(F 2 , V 2 )
(F 1 , V 1 )
B 1 7-2
GD
2
[kgm
2
]
∗
1.027
∗
(Nbase[min
−
1
])
2
375
∗
Power [W]
TM
: Machine time constant
GD
2
: Total inertia of motor and load
Nbase : Base
speed
Power : Motor rated output
A V/f characteristic as shown on the right can
be obtained for motors having special V/f
characteristics.
(Note)
Set so that F1
≤
F2
≤
Base frequency (B00-
5) and V1
≤
2.
ACR gain