21
5.
ADJUSTMENT OF THE FREQUENCY SETTING
POTENTIOMETER AND INDICATOR
•
Related parameters
Parameter
Name
Setting Range
Factory Setting
<EC Version>
38
Frequency setting voltage gain frequency
1 to 120Hz
60Hz <50Hz>
39
Frequency setting current gain frequency
1 to 120Hz
60Hz <50Hz>
C2
Frequency setting voltage bias frequency
0 to 60Hz
0Hz
C3
Frequency setting voltage bias
0 to 300%
0%*
C4
Frequency setting voltage gain
0 to 300%
96%*
C5
Frequency setting current bias frequency
0 to 60Hz
0Hz
C6
Frequency setting current bias
0 to 300%
20%*
C7
Frequency setting current gain
0 to 300%
100%*
* Settings may differ because of calibration parameters.
Ou
tput
f
re
que
ncy
(H
z)
Frequency setting voltage signal
Factory setting
5V or 10V
0V
Frequency setting current signal
Factory setting
20mA
4mA
*
C3
(0% )
Pr.73
C4
(100% )
60Hz<50Hz>
( )
Pr.39
0Hz
C6
(20% )
C7
(100% )
0Hz
C2
( )
60Hz<50Hz>
Pr.38
( )
C5
( )
Ou
tput
f
re
que
ncy
(H
z)
(Across
terminals
2-5)
(Across
terminals
4-5)
* Pr. 73 "0-5V/0-10V selection" changes the specifications of terminal "2".
POINT
•
Bias setting for 0 to 5VDC (0 to 10VDC) input: Use the calibration parameter
C2, C3 for setting.
•
Gain setting for 0 to 5VDC (0 to 10VDC) input: Use Pr. 38, calibration
parameter C4 for setting.
•
Bias setting for 4 to 20mADC input: Use calibration parameter C5, C6 for setting.
•
Gain setting for 4 to 20mADC input: Use Pr. 39, calibration parameter C7 for
setting.
(For 4 to 20mADC input, set "4" in any of Pr. 60 to Pr. 63 (input terminal
function selection) and assign AU (current input selection) to any of terminals
RH, RM, RL and STR.
5.1 Changing the Output Frequency Setting of the
Frequency Setting Potentiometer
(Bias and gain of frequency setting voltage (current))
POINT
•
Pr. 38, Pr. 39 and calibration parameters "C1 to C7" can be made to be read
by setting "1" (extended function parameter valid) in Pr. 30 "extended
function display selection".
The bias/gain of the frequency setting voltage (current) may be adjusted in any of
the following methods:
1) Changing the highest frequency
