Filter
Top Products
82
Explanation of functions (parameters)
2.3.18 Biases and gains of the frequency setting voltage (current)
(Pr. 38 , Pr. 39 , C2 to C7 )
*1.Factory settings may differ because of calibration parameters.
*2.The parameter number in parentheses is the one for use with the parameter unit (FR-PU04).
You can set the magnitude (slope) of the output frequency as desired in relation
to the external frequency setting signal (0 to 5V, 0 to 10V or 4 to 20mADC).
The "bias" and "gain" functions are used to adjust the relationship between the
input signal entered from outside the inverter to set the output frequency, e.g. 0
to 5V, 0 to 10V or 4 to 20mADC, and the output frequency.
Parameter Name Factory Setting
Setting
Range
Remarks
38
Frequency setting voltage gain
frequency
60Hz 1 to 120Hz
Setting is enabled
when Pr. 30 = "1".
39
Frequency setting current gain
frequency
60Hz 1 to 120Hz
C2 (902) *2
Frequency setting voltage bias
frequency
0Hz 0 to 60Hz
C3 (902) *2 Frequency setting voltage bias 0% *1 0 to 300%
C4 (903) *2 Frequency setting voltage gain 96% *1 0 to 300%
C5 (904) *2
Frequency setting current bias
frequency
0Hz 0 to 60Hz
C6 (904) *2 Frequency setting current bias 20% *1 0 to 300%
C7 (905) *2 Frequency setting current gain 100% *1 0 to 300%
POINT
•Bias setting for 0-5VDC (0-10VDC) input Use calibration parameters C2, C3
for setting.
•Gain setting for 0-5VDC (0-10VDC) input Use Pr. 38, calibration parameter
C4 for setting.
•Bias setting for 4-20mADC input Use calibration parameters C5, C6
for setting.
•Gain setting for 4-20mADC 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, and turn on the AU signal.)
Frequency setting voltage signal
Factory setting
0Hz( )
C2
5V or 10V
(96% C4 *1)
0V
Pr.73
Output
frequency (Hz)
( Pr.38 )
Frequency setting current signal
20mA
4mA
Factory setting
( Pr.39 )
Output
frequency (Hz)
0Hz( )
C5
(0% C3 *1)
(Across
terminals
2-5)
(20% C6 *1)
(100% C7 *1)
(Across
terminals
4-5)