4-103
Motor line to line resistance (02-15)
Refer to figure 4.3.15, Y-equivalent model an induction motor
Figure 4.3.15 Y-equivalent model an induction motor
No-load motor voltage (02-19)
Parameter determines the rated flux during motor rated rotation in SLV control mode. Set the value
of this parameter to the same value as parameter 17-08. A value of 10~50V below the input voltage
level ensures that the motor is capable of providing adequate torque performance when operating
at nominal speed (or higher speed). Setting the value to small can result in a reduction in no-load
current, weakened motor flux and an increase in motor current while the motor is loaded.
Proportion of Motor Leakage Inductance <1> (02-33)
(1) It is set by manual tuning function. Normally, it does not need to be adjusted because magnetic
function does not exist in this adjustment.
Lr
LlKg
(2) Definition of leakage inductance proportion is the ratio of leakage inductance to rotor
inductance. If the default value is set to 3.4%, adjust this ratio will affect the motor leakage
inductance parameter to be changed.
(3) When the adjustment of leakage inductance proportion is larger or smaller, it will cause the
motor jittering with abnormal noise and the motor cannot run. Generally, the adjusted value is
3.0%~5.0%. 4.0% is the universal adjustment value that can make the motor run normally. The
adjustment of leakage inductance proportion depends on the motor rating.
02-34 Motor Slip <1>
Range 【0.1~20.0】Hz
(1) Normally, it is not required to be adjusted. It can be obtained via manual tuning parameter f
unction. Such tuning does not have magnetic function.
(2) The default value of motor slip is set to 1 Hz. Motor slip is obtained from the nameplate.
Take 60Hz, 4-pole motor for example, synchronous speed：
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