Axpert-Eazy AC Variable Frequency Drive
6-63
6
= 3: Rotational (Belt OFF) (for Vector open and close loop)
The automatic tuning process is executed with rotating the motor. Select this option when it is
possible to decouple the load from motor. In this mode, motor rotate up to the half of base speed.
=4: Extended Rotational (Belt OFF) (for Vector open and close loop)
The automatic tuning process is executed with rotating the motor with different speed. Select this
option when it is possible to decouple the load from motor. In this mode, motor rotate up to base
speed or higher depends on maximum frequency.
=5: Reserved for future use.
B202 & B203: Primary Resistance R1 (mΩ)
The motor circuit constant is set. This value is decided by mantissa section B202 and exponent
section B203 as below. R1 = Value of B202 x (10^ value of B203) [mΩ].
For example, if B202= 0.200 and B203= 2, the value of R1= 0.200 x 10^2 = 0.200 x 100 = 20 mΩ
B204 & B205: Secondary Resistance R2’ (mΩ)
This is the secondary resistance (rotor resistance) of induction motor.
B206 & B207: Leakage Inductance L (mH)
This is the value of leakage inductance of the induction motor.
B208 & B209: Excitation Inductance M’ (mH)
This is the value of excitation inductance of the induction motor.
B210 & B211: Iron Loss resistance Rm (mΩ)
These parameters (B202 ~ B211) are related to motor’s internal distributed parameters. They are
useful for auto torque boost application (B202 ~ B203). During auto tuning mode these parameters
are automatically calculated.
GROUP – 3: PROTECTION PARAMETERS
B301: Stall Current Limit (%)
When the AC DRIVE output current crosses the stall current limit, the output ramps down with Current
limit deceleration time A209. This is effective only when the AC DRIVE is operating at set speed. This
feature is not active while the AC DRIVE is accelerating or decelerating. When the current decreases
below the programmed value, the AC DRIVE again starts accelerating to the set speed with Current
limit acceleration time A208. This feature helps in maintaining relatively constant output torque
characteristics.
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