Speed Proportional Control - Toshiba TOSVERT VF-FS1 Instruction Manual

6.1. Speed proportional control

Various inclinations can be set by frequency point setting.
The frequency command value on the slave side during inter-drive communication can be ex-
pressed by the following formulas.
If inter-drive communication is not selected (
Point conversion is performed only when the command "S" is received.
(Ex.)
Master (Fc)
Slave 1
Slave 2
Sending data from the master:
Master send fc(%) =
Slave frequency Command(Hz)=
Point 2 frequency(
Point
By the point conversion process,
(
Slave : 1 fc Hz
(
Slave : 2 fc Hz
【 Diagram of speed proportional control 】
<Outside>←
Master FC
×
Master send data＝ 1000
Master FH
Master command (%)
< unit > Frequency unit: 1=0.01(Hz), point setting unit: 1=0.01%
Maximum Point 1
frequency setting
( ) ( )
100.00Hz
－
(10000)
100.00Hz 0.00%
(10000) (0)
100.00Hz 0.00%
(10000) (0)
Master side fc × 10000
Master side FH
F813) - Point 1 frequency( F812)
2(F814) - point 1(F811)
−
9000 0
) = × ( −
5000 0
−
10000 0
−
8000 0
) = × ( −
5000 0
−
10000 0
→<Inverter's internal computation>
Point conversion
Point2 Frequency(
Slave command (Hz)
Point1 Frequency(
0
Slave command (Hz)
= ), point conversion is not performed.
Point 1 fre- Point 2
quency setting
( ) (
－ －
0.00Hz 100.00%
(0) (10000)
0.00Hz 100.00%
(0) (10000)
5000 × 10000
=
10000
x (Master command (%) - Point 1(F811)) + Point 1 frequency(F812)
) = =
0 4500 45 Hz
＋
) = =
0 4000 40 Hz
＋
(Note)fc=frequency reference, FH=Maximum frequency
(Hz)
)
)
Point1 Point2
( )
（
Master command (%)
−
F814 F812
= ×
( Master command
−
F813 F811
42
Point 2 Frequency
frequency (Fc)
) ( )
50.00Hz
－
90.00Hz 45.00Hz
(9000)
80.00Hz 40.00Hz
(8000)
= 5000 = 50%
Slave command (Hz)
（％)
)
(%)
－F811）＋F81 2
E6581393
(5000)
(4500)
(4000)