LS ELECTRIC SV-iS7 Series, Руководство пользователя

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Learning Advanced Features
Adv
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Feat
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Note
Sensorless-2 vector control mode is greatly affected by the motor and load characteristics.
Therefore, it is sometimes necessary to adjust the controller gain values.
When a sensorless-2 vector control is operated in speed mode [DRV-10 (torque control) is set to
“0
(No) ” . If the operation is unstable at extremely low speeds (below 2 – 3 Hz), or if the speed bounces
during startup, increase the CON-22 (ASR-SL I Gain1) value to 200% of the default value. With a
regenerative load, motor torque ripples may occur frequently. In this case, decrease the CON-21
(ASR-SL P Gain1) value to 50% of the default value. If this does not solve the problem, increase the
CON-21 (ASR-SL P Gain1) value back to the default, and decrease the CON-30 (S-Est I Gain1) value to
50% of the default value.
8.13 Vector Control Mode Operation
With an optional encoder module installed to the inverter, vector control mode provides highly
precise operation abilities.
Similar to sensorless-1 and sensorless-2 vector control modes, vector control mode requires
motor parameter values for operation. Before operating the inverter in sensorless-2 mode, run
auto tuning first.
Group Code Name LCD Display Parameter Setting Unit
DRV
09 Control mode Control Mode 5 Vector -
21
Speed unit
selection
Hz / rpm Sel 1 Rpm Display -
BAS 20 Auto tuning Auto Tuning 1 All -
CON
09 Initial excitation time PreExTime - 1.0 sec
10 Initial excitation power supply Flux Force - 100.0 %
11 Continued operation duration Hold Time - 1.0 sec
12
Speed controller proportional
gain 1
ASR P Gain 1 - 50.0 %
13 Speed controller integral gain 1 ASR I Gain 1 - 300 ms
15
Speed controller
proportional gain 2
ASR P Gain 2 - 50.0 %
16 Speed controller integral gain 2 ASR I Gain 2 - 300 ms
18 Gain exchange frequency Gain Sw Freq - 0.00 Hz
19 Gain exchange time Gain Sw Delay - 0.10 sec