Bias And Gain Of Frequency Setting Voltage (Current); (Pr. 125, Pr. 126, Pr. 241, C2(Pr. 902) To C7(Pr. 905), C12(Pr. 917) To C15(Pr. 918)) - Mitsubishi Electric FR-A720-0.4K Instruction Manual

Frequency/torque setting by analog
input (terminal 1, 2, 4)

4.21.5 Bias and gain of frequency setting voltage (current)

(Pr. 125, Pr. 126, Pr. 241, C2(Pr. 902) to C7(Pr. 905), C12(Pr. 917) to C15(Pr. 918))

You can set the magnitude (slope) of the output frequency as desired in relation to the frequency setting signal (0
Pr.124
to 5V, 0 to 10V or 4 to 20mADC).
page 314
Set Pr. 73 and Pr. 267 to switch between 0 to 5VDC, 0 to 10VDC and 4 to 20mADC. (Refer to page 273)
Pr.127
page 341
Parameter
Pr.240
Number
page 271
Terminal 2 frequency setting gain
125
Pr.242
frequency
page 277
Terminal 4 frequency setting gain
126
C1(Pr.901)
frequency
page 250
Analog input display unit
C16(Pr.919)
241
*2
switchover
page 285
Terminal 2 frequency setting bias
C2(902)
*1
frequency
Terminal 2 frequency setting bias
C3(902)
*1
C4(903) Terminal 2 frequency setting gain
*1
Terminal 4 frequency setting bias
C5(904)
*1
frequency
C6(904) Terminal 4 frequency setting bias
*1
C7(905) Terminal 4 frequency setting gain
*1
C12(917) Terminal 1 bias frequency (speed)
*1
C13(917) Terminal 1 bias (speed)
*1
C14(918) Terminal 1 gain frequency (speed)
*1
C15(918) Terminal 1 gain (speed)
*1
*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.
(1) The relationship between analog input terminal and calibration parameter
Terminal 1 functional calibration parameter
Pr. 868
Terminal Function
Setting
0
Frequency (speed) setting
(initial
value)
1 Magnetic flux command
2 Regenerative torque limit
3 Torque command
Stall prevention operation level */
4
torque limit/torque command
Forward/reverse rotation speed
5
6 Torque bias input
9999
Terminal 4 functional calibration parameter
Pr. 858
Advanced Magnetic Flux
Setting
0
Frequency command/speed
(initial
value)
1 Magnetic flux command
Stall prevention operation level */
4
9999

: 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
280
Name
C2(Pr. 902) Terminal 2 frequency setting bias frequency
C3(Pr. 902) Terminal 2 frequency setting bias
auxiliary
C5(Pr. 904) Terminal 4 frequency setting bias frequency
C6(Pr. 904) Terminal 4 frequency setting bias
C16(Pr.919) Terminal 1bias command (torque/magnetic flux)
C17(Pr.919) Terminal 1bias (torque/magnetic flux)
C16(Pr. 919) Terminal 1 bias command (torque/magnetic flux)
C17(Pr. 919) Terminal 1 bias (torque/magnetic flux)
C12(Pr. 917) Terminal 1 bias frequency (speed)
limit
C13(Pr. 917) Terminal 1 bias (speed)
C16(Pr. 919) Terminal 1 bias command (torque/magnetic flux)
C17(Pr. 919) Terminal 1 bias (torque/magnetic flux)

V/F Control
Vector Control
C5(Pr. 904) Terminal 4 frequency setting bias frequency
command
C6(Pr. 904) Terminal 4 frequency setting bias
C38(Pr.932) Terminal 4 bias command (torque/magnetic flux)
C39(Pr.32) Terminal 4 bias (torque/magnetic flux)
C38(Pr. 932) Terminal 4 bias command (torque/magnetic flux)
torque limit C39(Pr. 932) Terminal 4 bias (torque/magnetic flux)

Setting
Initial Value
Range
60Hz 0 to 400Hz
60Hz 0 to 400Hz
0
0
1
0Hz 0 to 400Hz
0% 0 to 300%
100% 0 to 300%
0Hz 0 to 400Hz
20% 0 to 300%
100% 0 to 300%
0Hz 0 to 400Hz
0% 0 to 300%
60Hz 0 to 400Hz
100% 0 to 300%
Calibration Parameters
Bias setting

Calibration Parameters
Bias setting

Description
Set the frequency of terminal 2 input gain
(maximum).
Set the frequency of terminal 4 input gain
(maximum).
Displayed in %
Select the unit of
analog input display.
Displayed in V/mA
Set the frequency on the bias side of
terminal 2 input.
Set the converted % of the bias side
voltage (current) of terminal 2 input.
Set the converted % of the gain side
voltage (current) of terminal 2 input.
Set the frequency on the bias side of
terminal 4 input.
Set the converted % of the bias side
current (voltage) of terminal 4 input.
Set the converted % of the gain side
current (voltage) of terminal 4 input.
Set the frequency (speed) on the bias side
of terminal 1 input.
Set the converted % of the bias side
voltage of terminal 1 input.
Set the frequency (speed) of terminal1
input gain (maximum).
Set the converted % of the gain side
voltage of terminal 1 input.
Gain setting
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
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)
C14(Pr. 918) Terminal 1 gain frequency (speed)
C15(Pr. 918) Terminal 1 gain (speed)
C18(Pr. 920) Terminal 1 gain command (torque/magnetic flux)
C19(Pr. 920) Terminal 1 gain (torque/magnetic flux)

Gain setting
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)
