Service manual

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61
cut off PWM wave output, the motor in free running state, when the given value
exceeds the lower limit frequency, the motor restart to accelerate from 0Hz to the
given value.
F0.13 Torque boost mode
Range: 0:manual boost
1:automatic boost
0
0: manual boost. Torque boost voltage is determined completely by parameter
F0.14，its characteristic is boost voltage fixed，but the motor is prone to magnetic
saturation when lightly loaded.
1: automatic torque boost. Torque boost voltage varies as stator current of
the motor changes，bigger stator current corresponds to bigger boost voltage.
Boost volt.= ×motor rated volt.×
F0.14 Torque boost Range: 0.0－12.0(%) 2.0(%)
To improve inverter’s low frequency torque characteristic，can carry on boost
compensation for output voltage，degressive torque curve and constant torque
curve torque boost are separately shown as Fig.6-4a, b.
Fig.6-4 torque boost graph
F0.15 V/F curve setting Range: 0~4 0
This function code defines EDS1000 flexible V/F setting mode to satisfy
different load characteristic. Can choose 4 kinds of fixed curve and one custom
curve according to definition of F0.15.
inverter output current
2×inverter rated current
(a)degressive torque curve torque boost graph
(b) constant torque curve torque boost graph
motor rated volt.
Volt.
Boost
voltage
rated freq.
Freq.
Volt.
Boost
rated freq.
Freq.
motor rated volt.
voltage
100
F0.14
Improper setting to this parameter can cause motor heating or over current protection.
note