8
MOTOR CONTROL
It sets the number of pulses per revolution (ppr) of the incremental encoder. This parameter influences the indication
of the speed parameters (P038) and pulse counter (P039) of the encoder.
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NOTE!
Parameter P405 is only visible on the HMI if the IOAENC expansion module is connected to the
inverter.
P408 - Run Self-Tuning
Range: 0 = No
1 = Yes
Properties: cfg, VVW
Description:
Parameter P408 in 1 activates the self-tuning of the VVW mode, where the motor stator resistance is measured.
The self-tuning can only be activated via HMI, and it can be interrupted at any time with the key.
During the self-tuning, the bar graph shows the progress of the operation and the motor remains still, because a
DC signal is sent to measure the stator resistance.
If the estimated value of the motor stator resistance is too high for the inverter used (for example: motor not
connected or motor too small for the inverter) the inverter indicates fault F033.
At the end of the self-tuning process, the measured motor stator resistance is saved in P409.
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NOTE!
The self-tuning will not run if the inverter is in Alarm or Fault.
P409 - Stator Resistance
Range: 0.01 to 99.99
Properties: cfg, VVW
Description:
Motor phase stator resistance in ohms (Ω). This value can be estimated by Self-Tuning.
If the value adjusted in P409 is too high or too low for the inverter used, the inverter indicates fault F033. In order
to exit this condition, just perform a reset by using the
key, in this case, P409 will be loaded with the factory
default value.
8-34 | Micro Mini Drives
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