14.4
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.
C2 (902)
Terminal 2 frequency setting
*1
bias frequency
T200
C3 (902)
Terminal 2 frequency setting
*1
bias
T201
125 (903)
Terminal 2 frequency setting
T202
gain frequency
*1
T022
C4 (903)
Terminal 2 frequency setting
*1
gain
T203
C5 (904)
Terminal 4 frequency setting
*1
bias frequency
T400
C6 (904)
Terminal 4 frequency setting
*1
bias
T401
126 (905)
Terminal 4 frequency setting
T402
gain frequency
*1
T042
C7 (905)
Terminal 4 frequency setting
*1
gain
T403
241
Analog input display unit
M043
switchover
*1
On the LCD operation panel used as the command source, the parameter number in parentheses appears instead of that starting with the letter C.
*2
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
6
Torque bias input
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).
(C2 (Pr.902) to C7 (Pr.905) settings need not be changed.)
Analog input bias/gain calibration (C2 (Pr.902) to C7 (Pr.905))
• 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 (Pr.902). (It is initially set to the frequency at 0 V.)
358
14. (T) Multi-Function Input Terminal Parameters
14.4 Frequency setting voltage (current) bias and gain
Initial value
Name
Gr.1
Gr.2
0 Hz
0%
60 Hz 50 Hz 0 to 590 Hz Set the gain (maximum) frequency for the terminal 2 input.
100%
0 Hz
20%
60 Hz 50 Hz 0 to 590 Hz Set the gain (maximum) frequency for the terminal 4 input.
100%
0
Bias setting
C5 (Pr.904) Terminal 4 frequency setting bias
frequency
C6 (Pr.904) Terminal 4 frequency setting bias
C38 (Pr.932) Terminal 4 bias command (torque/
magnetic flux)
C39 (Pr.932) Terminal 4 bias (torque/magnetic
flux)
C38 (Pr.932) Terminal 4 bias command (torque/
magnetic flux)
C39 (Pr.932) Terminal 4 bias (torque/magnetic
flux)
—
*2
Setting
range
0 to 590 Hz Set the bias frequency for the terminal 2 input.
0% to
Set the converted % of the bias voltage (current) for the terminal
300%
2 input.
0% to
Set the converted % of the gain voltage (current) for the terminal
300%
2 input.
0 to 590 Hz Set the bias frequency for the terminal 4 input.
0% to
Set the converted % of the bias current (voltage) for the terminal
300%
4 input.
0% to
Set the converted % of the gain current (voltage) for the terminal
300%
4 input.
0
% display
1
V/mA display
page
54).
Calibration parameter
Pr.126 Terminal 4 frequency setting gain
frequency
C7 (Pr.905) Terminal 4 frequency setting gain
C40 (Pr.933) Terminal 4 gain command (torque/
magnetic flux)
C41 (Pr.933) Terminal 4 gain (torque/magnetic
flux)
C40 (Pr.933) Terminal 4 gain command (torque/
magnetic flux)
C41 (Pr.933) Terminal 4 gain (torque/magnetic
flux)
—
page
350.)
Description
Select the unit for analog input display.
Gain setting