Torque Setting Current (Voltage) Bias And Gain - Mitsubishi Electric FR-E800 Instruction Manual

13.5

Torque setting current (voltage) bias and gain

Sensorless Vector Sensorless Sensorless Vector Vector PM PM PM
The magnitude (slope) of the torque can be set as desired in relation to the torque setting signal (0 to 5 VDC, 0 to 10 VDC, or
0 to 20 mA).
Use Pr.267 Terminal 4 input selection to switch among input 0 to 5 VDC, 0 to 10 VDC, and 0 to 20 mA. (Refer to
Pr. Name
C38 (932)
Terminal 4 bias command (torque) 0%
*1
T410
C39 (932)
Terminal 4 bias (torque)
*1
T411
C40 (933)
Terminal 4 gain command (torque) 150%
*1
T412
C41 (933)
Terminal 4 gain (torque)
*1
T413
241 Analog input display unit
M043 switchover
*1 On the LCD operation panel or the parameter unit used as the command source, the parameter number in parentheses appears.
 Changing the function of analog input terminal
• In the initial setting, terminal 4 is used for analog input of the speed command (speed limit). To use the analog input
terminal to input the torque command or torque limit, set Pr.858 Terminal 4 function assignment to change the function.
(Refer to page 397.)
 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 (speed) command /
value) speed limit
4 Torque limit
6 Torque bias input
9999 No function
 Changing the torque for the maximum analog input (C40 (Pr.933))
• Use C40 (Pr.933) to change the torque setting (gain) for the maximum analog input current (voltage).
 Analog input bias/gain calibration (C38 (Pr.932) to C41 (Pr.933))
• The "bias"/"gain" function can adjust the relation between the torque and the torque limit setting input signal. Examples of
setting input signals are 0 to 5 VDC, 0 to 10 VDC, or 0 to 20 mADC, and they are externally input.
• Set the bias torque of the terminal 4 input using C38 (Pr.932). (The initial value is the torque for 0 mA.)
Initial
Setting range
value
0% to 400%
0% 0% to 300%
0% to 400%
100% 0% to 300%
0
0
1
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)
C39 (Pr.932) Terminal 4 bias (torque)
C38 (Pr.932) Terminal 4 bias command
(torque)
C39 (Pr.932) Terminal 4 bias (torque)
—
Description
Set the bias torque for the terminal 4 input.
Set the converted % of the bias current (voltage) for the
terminal 4 input.
Set the gain (maximum) torque 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
Calibration parameter
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)
C41 (Pr.933) Terminal 4 gain (torque)
C40 (Pr.933) Terminal 4 gain command
(torque)
C41 (Pr.933) Terminal 4 gain (torque)
—
13. (T) Multi-Function Input Terminal Parameters
13.5 Torque setting current (voltage) bias and gain
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page 392.)
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