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300
Frequency/torque setting by analog
input (terminal 1, 2, 4)
4.21.6 Bias and gain of torque (magnetic flux) setting voltage (current)
(Pr. 241, C16(Pr. 919) to C19(Pr. 920), C38 (Pr. 932) to C41 (Pr. 933))
(1) Change functions of analog input terminal
In the initial setting status, terminal 1 and terminal 4 used for analog input are respectively set to speed setting
auxiliary (speed limit auxiliary) and speed command (speed limit). To use an analog input terminal as torque
command, torque limit input or magnetic flux command input, set Pr. 868 Terminal 1 function assignment and Pr. 858
Terminal 4 function assignment to change functions. (Refer to page 285)
Magnetic flux command is valid only under vector control.
(2) The relationship between analog input terminal and calibration parameter
Terminal 1 functional calibration parameter
—: No function
* Use Pr. 148 Stall prevention level at 0V input and Pr. 149 Stall prevention level at 10V input to adjust bias/gain of stall prevention operation level.
You can set the magnitude (slope) of the torque as desired in relation to the torque setting signal (0 to 5VDC, 0 to
10V or 4 to 20mA).
Use Pr. 73 and Pr. 267 to switch from among 0 to 5V, 0 to 10V, 4 to 20mADC. (Refer to page 286)
Parameter
Number
Name
Initial
Value
Setting
Range
Description
241 *2
Analog input display unit
switchover
0
0 Displayed in %
Select the unit of analog input
display.
1 Displayed in V/mA
C16(919)
*1
Terminal 1 bias command (torque/
magnetic flux)
0% 0 to 400%
Set the torque (magnetic flux) on the bias side of
terminal 1 input.
C17(919)
*1
Terminal 1 bias (torque/magnetic
flux)
0% 0 to 300%
Set the converted % of the bias side voltage
(current) of terminal1 input.
C18(920)
*1
Terminal 1 gain command (torque/
magnetic flux)
150% 0 to 400%
Set the torque (magnetic flux) of the terminal 1 input
gain (maximum).
C19(920)
*1
Terminal 1 gain (torque/magnetic
flux)
100% 0 to 300%
Set the converted % of the gain side voltage of
terminal1 input.
C38(932)
*1
Terminal 4 bias command (torque/
magnetic flux)
0% 0 to 400%
Set the torque (magnetic flux) on the bias side of
terminal 4 input.
C39(932)
*1
Terminal 4 bias (torque/magnetic
flux)
20% 0 to 300%
Set the converted % of the bias side current
(voltage) of terminal 4 input.
C40(933)
*1
Terminal 4 gain command (torque/
magnetic flux)
150% 0 to 400%
Set the torque (magnetic flux) of the terminal 4 input
gain (maximum).
C41(933)
*1
Terminal 4 gain (torque/magnetic
flux)
100% 0 to 300%
Set the converted % of the gain side current
(voltage) of terminal 4 input.
*1 The parameter number in parentheses is the one for use with the parameter unit (FR-PU04/FR-PU07).
*2 The above parameters allow its setting to be changed during operation in any operation mode even if "0" (initial value) is set in Pr. 77 Parameter
write selection .
Pr. 868
Setting
Terminal
Function
Calibration Parameters
Bias setting Gain setting
0
(initial
value)
Frequency (speed)
setting auxiliary
C2(Pr. 902) Terminal 2 frequency setting bias frequency
C3(Pr. 902) Terminal 2 frequency setting bias
C5(Pr. 904) Terminal 4 frequency setting bias frequency
C6(Pr. 904) Terminal 4 frequency setting bias
Pr. 125 Terminal 2 frequency setting gain frequency
C4(Pr. 903) Terminal 2 frequency setting gain
Pr. 126 Terminal 4 frequency setting gain frequency
C7(Pr. 905) Terminal 4 frequency setting gain
1
Magnetic flux
command
C16(Pr. 919) Terminal 1bias command (torque/magnetic flux)
C17(Pr. 919) Terminal 1bias (torque/magnetic flux)
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)
2
Regenerative
torque limit
C16(Pr. 919) Terminal 1 bias command (torque/magnetic flux)
C17(Pr. 919) Terminal 1 bias (torque/magnetic flux)
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)
3 Torque command
4
Stall prevention
operation level */
torque limit/torque
command
5
Forward/reverse
rotation speed limit
C12(Pr. 917) Terminal 1 bias frequency (speed)
C13(Pr. 917) Terminal 1 bias (speed)
C14(Pr. 918) Terminal 1 gain frequency (speed)
C15(Pr. 918) Terminal 1 gain (speed)
6 Torque bias input
C16(Pr. 919) Terminal 1 bias command (torque/magnetic flux)
C17(Pr. 919) Terminal 1 bias (torque/magnetic flux)
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)
9999
⎯⎯ ⎯
Sensorless
Sensorless
Sensorless
Vector
Vector
Vector