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.
B13-6
B13-7
Max speed
(B01-4)
Base speed
(B01-5)
100%
ASR gain
Motor speed
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
100%
B17-1
B17-3
Voltage
Frequency
B17-0 B00-5
Base
Frequency
(F2, V2)
(F1, V1)
B17-2
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
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