Delta Electronics AC Drive VFD-F Series, User Manual

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VFD-F Series
DELTA ELECTRONICS, INC. ALL RIGHTS RESERVED
5-38
Unsuitable setting value may cause over compensation.
07 - 05 Rated Slip Frequency of Motor
Factory Setting: 0.00
Settings 0.00~20.00Hz Unit: 0.01
This parameter is to set rated slip of loaded motor. Users need to input rated rotation speed
according to nameplate of loaded motor. If rated frequency of motor is 60Hz, number of
motor poles is 4 and rated rotation speed of motor is 1650rpm. The rated slip frequency of
motor is 60Hz-(1650rpm X 4/120) = 5Hz.
This parameter has relation with 07-04 slip compensation. To have the best slip
compensation, this parameter must be set correctly. Incorrect setting may cause above
functions disable and even damage the motor and AC drive.
07 - 06 Auto Torque Compensation Gain
a
Factory Setting: 0.0
Settings 0.0~10.0 Unit: 0.1
This parameter is to set auto torque compensation gain.
When motor loading is high, a part of output frequency of AC drive will be absorbed by
impedance of stator winding to make voltage of exciting inductance of motor is not enough.
Therefore, the short of gap magnet field will make a high output current but low output
torque. Auto torque compensation gain could adjust output voltage automatically according
to loading to maintain in a fixed gap magnet of the motor to get the best running situation.
If the setting of compensation gain is too great, over-exciting magnet will cause the
following situation: output current of AC drive is too great, motor is over-heating or
protection function occurs.
07 - 07 Torque Compensation Gain by Manual Operation
a
Factory Setting: 0.0
Settings 0.0~10.0 Unit: 1.0
This parameter determines torque compensation gain by manual operation.
Torque compensation gain by manual operation won’t refer to the loading situation and
adds compensation voltage on the setting V/f curve. Basically, it just changes V/f curve. It
could be reached by adjusting V/f curve.
07 - 08 Calculate Total Running Time of the Motor (Min)
Factory Setting: 00
Settings 00 to 1439 Min Unit: 1
07 - 09 Calculate Total Running Time of the Motor (Day)
Factory Setting: 00
Settings 00 to 65535 Day Unit: 1
This parameter could display running time of the motor.