SV800/SV800A User Manual 7 Detailed function description
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sheet, sometimes the desired characteristics cannot be obtained. , So you should do everything
possible to perform a full-mode self-learning, and only need one full-mode self-learning. For
details of motor parameter self-learning, refer to "5.3 Induction Motor Self-learning".
During vector control, if this set of parameters is all zero (no full-mode self-learning or correct
electrical parameters have not been entered after performing DC-mode self-learning), a SEtE
(operation preparation not completed) warning is displayed when the run command RUN key is
input, The motor will not be allowed to drive. The motor can only be driven by performing
full-mode self-learning or after entered the correct electrical parameters and perform DC mode
self-learning. When the inverter model is changed, this group of parameters is all cleared, and
other initializations refer to parameter A0-06 (Initialization).
The parameter b1-08 ( The first motor primary side resistance) is the sum of the primary
resistance of the motor (stator resistance) and the resistance of the cable between the inverter
and the motor. In vector control, when the motor cable length changes greatly, DC mode
self-learning needs to be performed again.
The parameter b1-09 (the first motor secondary side resistance) is the conversion value of the
motor secondary resistance, i.e. the rotor resistance converted to the primary side. When the
full-mode self-learning cannot be performed, it is necessary to set the conversion value of the
motor at normal temperature (25
℃
) according to the motor design sheet. Motor self-learning
should be performed at room temperature as much as possible. Especially when running in SVC
control mode, it may cause the static accuracy of speed control to decrease. It is no longer
necessary or recommended to repeat the self-learning after the motor self-learning is performed
during debugging. The electrical parameters of the motor obtained in that way will cause the
motor model to deviate from the electrical characteristics of the motor itself.
The parameter b1-10 (the first motor leakage inductance) is the leakage inductance of the motor.
When the full-mode self-learning cannot be performed, it is necessary to manually set the
average value of the primary side leakage inductance and the secondary side leakage inductance
(primary side conversion value) according to the motor design sheet.
The parameter b1-11 (mutual inductance of the first motor) is the mutual inductance of the
motor. It will change due to different magnetic fluxes. The inductance at the rated magnetic flux
should be set in the parameter.
The parameters b1-12 (first motor inductance saturation compensation coefficient 1) and b1-13
(first motor inductance saturation compensation coefficient 2) are motor mutual inductance
saturation compensation coefficients. When setting manually, the increase rate of 90% and 70%
of the rated magnetic flux with respect to b1-11 should be set in percentages.
The parameter b1-14 (the first motor iron loss conductance) is the rated value of the
conductance of the iron loss part of the motor.
The parameters b1-15 (first motor loss factor 1) and b1-16 (first motor loss factor 2) are the
electrical and mechanical loss coefficients measured in full-mode self-learning which used for
loss compensation in vector control.
