12.4
Frequency setting voltage (current) bias and gain
The magnitude (slope) of the output frequency can be set as desired in relation to the frequency setting signal (0 to 5 VDC, 0
to 10 VDC, or 4 to 20 mA). Use Pr.73 Analog input selection (Pr.267 Terminal 4 input selection) and the voltage/current
input selection switch to switch among input of 0 to 5 VDC, 0 to 10 V, and 0 to 20 mA. (Refer to
Pr.
Name
C2
Terminal 2 frequency setting
T200
bias frequency
C3
Terminal 2 frequency setting
T201
bias
125
Terminal 2 frequency setting
T202
gain frequency
T022
C4
Terminal 2 frequency setting
T203
gain
C5
Terminal 4 frequency setting
T400
bias frequency
C6
Terminal 4 frequency setting
T401
bias
126
Terminal 4 frequency setting
T402
gain frequency
T042
C7
Terminal 4 frequency setting
T403
gain
241
Analog input display unit
M043
switchover
*1
Gr.1 and Gr.2 are the parameter initial value groups. (Refer to
Relationship between the analog input terminal function and the
calibration parameter
• Calibration parameter according to the terminal 4 function
Pr.858
Terminal function
setting
0 (initial
Frequency command
value)
4
Torque limit
9999
No function
Changing the frequency for the maximum analog input (Pr.125, Pr.126)
• Use Pr.125 (Pr.126) to change the frequency setting (gain) for the maximum analog input voltage (current).
(The C2 to C7 settings need not be changed.)
Analog input bias/gain calibration (C2 to C7)
• The "bias" and "gain" functions serve to adjust the relationship between a setting input signal and the output frequency. A
setting input signal is such as a 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mADC signal externally input to set the output
frequency.
• Set the bias frequency of the terminal 2 input using C2. (It is initially set to the frequency at 0 V.)
• Use Pr.125 to set the output frequency to the frequency command voltage (current) set by Pr.73 Analog input selection.
• Set the bias frequency of the terminal 4 input using C5. (It is initially set to the frequency at 4 mA.)
*1
Initial value
Setting
range
Gr.1
Gr.2
0 Hz
0 to 590 Hz Set the bias frequency for the terminal 2 input.
0% to
0%
300%
60 Hz 50 Hz 0 to 590 Hz Set the gain (maximum) frequency for the terminal 2 input.
0% to
100%
300%
0 Hz
0 to 590 Hz Set the bias frequency for the terminal 4 input.
0% to
20%
300%
60 Hz 50 Hz 0 to 590 Hz Set the gain (maximum) frequency for the terminal 4 input.
0% to
100%
300%
0
0
1
Bias setting
C5 Terminal 4 frequency setting bias frequency
C6 Terminal 4 frequency setting bias
C38 Terminal 4 bias command (torque/
magnetic flux)
C39 Terminal 4 bias (torque/magnetic flux)
—
Description
Set the converted % of the bias voltage (current) for the terminal
2 input.
Set the converted % of the gain voltage (current) for the terminal
2 input.
Set the converted % of the bias current (voltage) for the terminal
4 input.
Set the converted % of the gain current (voltage) for the terminal
4 input.
% display
Select the unit for analog input display.
V/mA display
page
82).
Calibration parameter
Pr.126 Terminal 4 frequency setting gain
frequency
C7 Terminal 4 frequency setting gain
C40 Terminal 4 gain command (torque/
magnetic flux)
C41 Terminal 4 gain (torque/magnetic flux)
—
12. (T) Multi-Function Input Terminal Parameters
12.4 Frequency setting voltage (current) bias and gain
page
266.)
Gain setting
11
12
13
14
15
16
17
18
19
20
273