Learning Advanced Features
Sensorless Vector Control Operation Setting Details for Induction Motors
Does not display sensorless (II) vector control gain code.
Allows the user to set various gains applied when the
motor rotates faster than medium speed (approx. 1/2 of
the base frequency) through sensorless (II) vector
control.
Codes available when setting to 1 (Yes): Cn.23 ASR-SL P Gain2/Cn.24
ASR-SL I Gain2/Cn.26 Flux P Gain/Cn.27 Flux I Gain Gain3/Cn.28 S-
Est P Gain1/Cn.29 S-Est I Gain1/Cn.30 S-Est I Gain1/Cn.31 ACR SL P
Gain/Cn.32 ACR SL I Gain
Sets pre-excitation time. Pre-excitation is used to start the operation
after performing excitation up to the motor’s rated flux.
Allows for the reduction of the pre-excitation time. The motor flux
increases up to the rated flux with the time constant as shown in the
following figure. To reduce the time taken to reach the rated flux, a
higher motor flux base value than the rated flux must be provided.
When the magnetic flux reaches the rated flux, the provided motor flux
base value is reduced.
Sets the zero-speed control time (hold time) in the stopped position. The
output is blocked after zero-speed operation for a set period when the
motor decelerates and is stopped by a stop command.
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