TOSHIBA
10.8
Terminal IV
Terminal IV ( ) is a special input terminal which is used in conjunction with the
SETUP PARAMETERS group. These parameters, numbered ITEM 5 through 8, allow
setting of Terminal IV point #1setting signal, Point #1 output signal, Terminal IV point #2
setting signal, and Point #2 output signals to output exact frequencies based upon
specific input reference signals. These output frequencies do not necessarily have a
one-to-one ratio with the input reference signals. The following graphs and examples
illustrate how these parameters can be adjusted (See Setup Parameters page 9-1).
10 - 7
Hz
Max Frequency
(FH) and/or (F-P2)
0Hz (F-P1)
Factory Setting
IV
CC
Example: Application requiring the following output characteristics is shown below:
20
(F-P1)
60
(F-P2)
FH 80
Hz
35%
50%
(P1)
80%
(P2)
95% 100%
Note:
In most cases the value of UL is less than FH.The value of UL cannot be greater than FH.
(F-P2) 60
(F-P1) 40
In the above graph the inverter has an output frequency of 20Hz
even with a 0% input signal. Also notice that the maximum
output frequency is never reached unless the input signal goes
above 100%. (i.e. a 7Vdc input signal is considered a 140%
input signal when using a 0~5Vdc input.
FH
20
33%
0(P2)
100%(P1)
66%
In the above graph the inverter has a negative output. In
other words, as the input signal increases the output
frequency decreases. Notice that at 0% and 100% input the
inverter outputs 60Hz and 0Hz, respectively.
Hz
Input
Signal
FH 80
(F-P2) 60
(F-P1)40
20
40%(P1)
80%(P2) 100%
0
Hz
% INPUT SIGNAL
JP1=V
JP1=I
JP2=5V
JP2=10V
100%
5Vdc
20mAdc
5Vdc
10Vdc
0%
0V
0mA
0V
0V
20%
IV
IV
REF
REF
4mA
In the above graph the inverter has no output frequency until the input signal has reached 35%
of its maximum. This is due to the linear characteristics of the IV Function. Also notice that the
maximum frequency is reached before 100% of the input signal is applied.
INPUT SIGNAL
P1=50% of maximum input signal
F-P1=20Hz
P2=80% of maximum input signal
F-P2=60Hz
FH=80Hz
efesotomasyon.com -Toshiba inverter,drive,servo,plc
