Mitsubishi Electric FR-E800, Инструкция по эксплуатации, Страница: 142 / 484

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6. Torque Control
6.2 Setting procedure of Real sensorless vector control (torque control)
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6.2
Setting procedure of Real sensorless vector
control (torque control)
Operating procedure
1.
Perform wiring properly. (Refer to the Instruction Manual (Connection).)
2.
Make the motor setting ( Pr.71 ). (Refer to page 340 .)
Set Pr.71 Applied motor to "0" (standard motor) or "10" (constant-torque motor).
3.
Set the motor overheat protection ( Pr.9 ). (Refer to page 238 .)
4.
Set the motor capacity and the number of motor poles ( Pr.80, Pr.81 ). (Refer to page 97 .)
Operation does not start when the setting value is "9999" (initial value).
5.
Set the rated motor voltage and frequency ( Pr.83, Pr.84 ). (Refer to page 345 .)
6.
Select the control method ( Pr.800 ). (Refer to page 97 .)
Select Pr.800 Control method selection = "11" (torque control) or "12" (speed/torque switchover) to enable torque
control.
7.
Set the torque command ( Pr.804 ). (Refer to page 143 .)
8.
Set the speed limit ( Pr.807 ). (Refer to page 147 .)
9.
Perform the offline auto tuning ( Pr.96 ). (Refer to page 345 .)
10.
Set the acceleration time to "0" ( Pr.7 ). (Refer to page 196 .)
11.
Perform the test operation.
As required
• Select online auto tuning ( Pr.95 ). (Refer to page 362 .)
• Adjust the torque control gain manually. (Refer to page 149 .)
NOTE
• During Real sensorless vector control, offline auto tuning must be performed properly before starting operations.
• The carrier frequency is limited during Real sensorless vector control. (Refer to
page 184 .)
• Torque control is not available in a low-speed (about 10 Hz or lower) regenerative range, or with a low speed and light load
(about 5 Hz or lower and rated torque about 20% or lower).
• 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.
• Switching between the forward rotation command (STF) and reverse rotation command (STR) must not be performed during
operations under torque control. An overcurrent trip (E.OC[]) or opposite rotation deceleration fault (E.11) will occur.
• If starting may occur while the motor is coasting under Real sensorless vector control, the frequency search must be set for
the automatic restart after instantaneous power failure function ( Pr.57 ≠ "9999", Pr.162 = "10").
• When Real sensorless vector control is applied, there may not be enough torque provided in the ultra low-speed range of about
2 Hz or lower.
Generally, the speed control range is as follows.
For power driving, 1:200 (2, 4 or 6 poles) (available at 0.3 Hz or higher when the rating is 60 Hz), 1:30 (8 or 10 poles) (available
at 2 Hz or higher when the rating is 60 Hz).
For regenerative driving, 1:12 (2 to 10 poles) (available at 5 Hz or higher when the rating is 60 Hz).
• To give the constant torque command in the constant output range, set "1" in Pr.803 Constant output range torque
characteristic selection . (Refer to page 143 .)
• For the settings for the SF-V5RU, refer to page 365 .
Sensorless Sensorless Sensorless