6. Control Functions and Parameter Settings
6-12
Block-B parameters (Extended function constants) list
ApplicationNo. Parameter Unit Default Min. Max. Function
ST V/f VEC PM
B20 – Output rating (Dual drive)
0 Max./base frequency
simple setting
1. 0 9 Select the output frequency rating
from the following table.
1 Rated output voltage V 200
/400.
40. 480. The Automatic Voltage regulator DC-
AVR, is always enabled, so the set
voltage is attained at the base
frequency.
This is the rated motor voltage, which
can not be set to a larger value than the
input voltage set in B00-0.
2 Max. frequency Hz 50.0 3.0 440.0
3 Base frequency Hz 50.0 1.0 440.0
When "B20-0" is a value other than 0,
these values will be rewritten with the
data set in B20-0
4 Motor rated current A Inverter
rating
Inverter
rating
× 0.3
Inverter
rating
The overcurrent limit, OLT, current %
display and meter output. are related
to this setting
5 Carrier frequency 17.0 1.0 21.0 The noise can be lowered by
changing the PWM carrier frequency
and control method, which affects to
the sound generated from the motor.
This can be changed while running.
1.0 to 15.0:
Monotone sound method (Carrier
frequency: 1.0 to 15.0kHz)
15.1 to 18.0:
Soft sound method 1 (Basic
carrier frequency: 2.1 to 5.0kHz)
18.1 to 21.0:
Soft sound method 2 (Basic
carrier frequency: 2.1 to 5.0kHz)
B21 – Frequency setting (Dual Drive)
0
Local frequency
setting
Hz 10.00 0.10
Max.fre-
quency
This is the frequency set from the
operation panel.
1 Frequency setting for
jogging
Hz 5.00 0.10 Max.fre
-quency
This is the frequency setting for
jogging.
B22 – Acceleration/deceleration time (Dual Drive)
0
1
Acceleration ramp
time-1
Deceleration ramp
time-1
sec
sec
10.0
20.0
0.1
0.1
6000.0
6000.0
This is the time to reach the max.
frequency or max. speed from 0
This value can be set x0.1 or x10
units by setting the parameter B10-5
2
3
Acceleration ramp
time for jogging
Deceleration ramp
time for jogging
sec
sec
5.0
5.0
0.1
0.1
6000.0
6000.0
This is the acceleration/deceleration
time value when the JOG sequence
(F JOG, R JOG) is ON.
This value can be set x0.1 or x10
units by setting the parameter B10-5.
Value Ftrq (Hz) Fmax (Hz)
0 Free setting on B20-2,3
150 50
260 60
360
475
5
50
100
670
780
890
9
60
120