Table of Contents
Advertisement
Explanation of functions (parameters)
2.3.18 Biases and gains of the frequency setting voltage (current)
(Pr. 38
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.
50Hz
( Pr.38 )
C2
0Hz(
)
0V
(0% C3 *1)
Frequency setting voltage signal
Parameter
Frequency setting voltage gain
38
frequency
Frequency setting current gain
39
frequency
Frequency setting voltage bias
C2 (902) *2
frequency
C3 (902) *2 Frequency setting voltage bias
C4 (903) *2 Frequency setting voltage gain
Frequency setting current bias
C5 (904) *2
frequency
C6 (904) *2 Frequency setting current bias
C7 (905) *2 Frequency setting current gain
*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).
POINT
Bias setting for 0-5VDC (0-10VDC) input
Gain setting for 0-5VDC (0-10VDC) input
Bias setting for 4-20mADC input
Gain setting for 4-20mADC input
(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.)
, Pr. 39
Factory setting
(Across
terminals
2-5)
5V or 10V
(100% C4 *1)
Name
, C2
to C7
50Hz
( Pr.39 )
C5
0Hz(
)
Pr.73
(20% C6 *1)
Frequency setting current signal
Factory Setting
50Hz
50Hz
0Hz
0% *1
96% *1
0Hz
20% *1
100% *1
Use calibration parameters C2, C3
for setting.
Use Pr. 38, calibration parameter
C4 for setting.
Use calibration parameters C5, C6
for setting.
Use Pr. 39, calibration parameter
C7 for setting.
80
)
Factory setting
4mA
20mA
(100% C7 *1)
Setting
Remarks
Range
1 to 120Hz
1 to 120Hz
0 to 60Hz
Setting is enabled
0 to 300%
when Pr. 30 = "1".
0 to 300%
0 to 60Hz
0 to 300%
0 to 300%
(Across
terminals
4-5)
Advertisement
Table of Contents
