11.4 Motor Parameters Auto-Tuning
For the applications with higher requirement to control accuracy in V/f control,
motor parameter auto-tuning is necessary.
Check and make sure the following points before auto-tuning:
●
The motor is in standstill and not at high temperature.
●
The power rating of the frequency converter is close to that of the motor.
●
Set C1.05...C1.10 based on motor nameplate data. If the power factor data is
unavailable on the nameplate, keep the default setting of C1.10.
●
Set E0.08 according to motor parameters and actual application conditions.
Set auto-tuning mode and start motor parameter auto-tuning:
Set the following parameter according to the control mode of the frequency con-
verter and the application situation.
Code
Name
Setting range
Default
Min.
Attri.
C1.01
Motor parameter tuning
0, 1
0
–
Stop
●
0: Inactive.
●
1: Static auto-tuning.
Press the <Run> button on the operating panel to start auto-tuning. In the proc-
ess of auto-tuning, a status code 'tUnE' will be displayed on the operating panel.
When the auto-tuning process is complete, the status code disappears and the
settings of the following parameters will be obtained automatically:
Static auto-tuning
Parameters obtained by auto-tuning
√
C1.12: Motor rated slip frequency
√
C1.20: Motor no-load current
√
C1.21: Stator resistance
√
C1.22: Rotor resistance
√
C1.23: Leakage inductance
√
C1.24: Mutual inductance
Tab. 11-6: Parameters obtained by auto-tuning
Bosch Rexroth AG
Quick Start
VFC 3210
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