Setting Procedure For Vector Control (Torque Control) - Mitsubishi Electric 800 Series Instruction Manual (Function

6.3
Setting procedure for Vector control (torque
control)
Vector Vector Vector
Operating procedure
1.
Perform secure wiring. (Refer to the Instruction Manual (Connection).)
Install a Vector control compatible option.
2.
Set the motor and the encoder (Pr.71, Pr.359, Pr.369). (Refer to
3.
Set the overheat protection of the motor (Pr.9). (Refer to
When using the SF-V5RU or a motor equipped with a thermal sensor, set Pr.9 = 0 A. For details on connecting a
motor equipped with a thermal sensor, refer to the Instruction Manual (Connection).
4.
Set the motor capacity and the number of motor poles (Pr.80, Pr.81). (Refer to
V/F control is performed when the setting is "9999" (initial value).
5.
Set the rated motor voltage and frequency (Pr.83, Pr.84). (Refer to
6.
Select the control method (Pr.800). (Refer to
Select Pr.800 Control method selection = "1" (torque control), "2" (speed/torque switchover), or "5" (position/
torque switchover) to enable torque control.
7.
Set the torque command (Pr.804). (Refer to
8.
Set the speed limit (Pr.807). (Refer to
9.
Set the acceleration time to "0" (Pr.7). (Refer to
10.
Perform the test operation.
As required
• Perform offline auto tuning (Pr.96). (Refer to
• Select online auto tuning (Pr.95). (Refer to
• Adjust the torque control gain manually. (Refer to
NOTE
• Under Vector control, the magnetic flux observer is enabled to estimate or measure the flux within the motor using the current
running through the motor and the inverter output voltage. This improves the torque accuracy since the flux of a motor can be
accurately estimated and optimum characteristics can be obtained without being affected by temperature change in the
second resistor.
• Performing pre-excitation (LX signal and X13 signal) under torque control may start the motor running at a low speed even
when the start signal (STF or STR) is not input. This product with the start command ON may also rotate the motor at a low
speed when the speed limit value is set to zero. Confirm that the motor running does not cause any safety problems before
performing pre-excitation.
• The carrier frequency is limited during Vector control. (Refer to
• Torque control is not available under the Vector control with PM motors.
• To give the constant torque command in the constant output range, set "1" in Pr.803 Constant output range torque
characteristic selection. (Refer to
• For the settings for the SF-V5RU, refer to
148
6. Torque Control

6.3 Setting procedure for Vector control (torque control)

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