Chziri ZVF9V-G/P, Руководство пользователя

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6.1 Schedule of Function Parameters 6.1 Schedule of Function Parameters
F0.08 Basic operation frequency Setting range: 1.00~uppper limiting frequency
Factory default setting: 50.00Hz
Basic operation frequency is the minimal frequency corresponding to the maximum
voltage output by the inverter. Generally, it is motor's rated frequency, which is the
basis for frequency setting and acceleration/deceleration time. Note: This can not be
regulated at will, as shown in f of Fig.6-1.
2
F0.09 Maximum output voltage Setting range: 100~500V
Factory default setting: Determined as per specification
This is the maximum output voltage corresponding to the basic frequency output by
the inverter. Generally, it is motor's rated voltage. Under the mode of V/F control,
output voltage value can be changed by regulating this parameter, while under the
mode of vector control, this parameter will be invalid, as shown in V
of Fig.6-1.
max
F0.10 Model selection Setting range: 0~1 Factory default setting: 0
0 Model G
Applicable to torque constant torque loads.
1 Model P
Applicable to loads of fan, pump series that the torque and the rotating speed is parabolic.
Caution
This parameter can not be changed at will. Otherwise, there will
be error display of the inverter's current, causing abnormal
operation.
F0.11 Torque lifting selection Setting range: 0~1 Factory default setting: 0
This parameter is used to lift motor's low frequency torque characteristic under V/F
mode. It will be invalid under vector control.
0: Hand-operated
Torque lifting voltage is set by parameter F0.12, and the voltage will rise according
to the value set by F0.12.
1: Auto
Torque lifting voltage changes as the rotator current changes. The larger the rotator current is, the
larger voltage is lifted. If auto torque lifting is set, magnetic circuit saturation caused by overlarge
lifting voltage when the motor has a light load can be prevented and overheat can e avoided when
the motor is in low frequency operation.
The formula for auto torque lifting voltage is shown below:
Lifting voltage= (F0.12 200)
F0.09 (Inverter output current inverter rated current)
The calculation method for hand-operated torque lifting voltage is similar to auto torque lifting.
The difference lies in that hand-operated torque lifting voltage should remove the ratio of output
current to rated current. The torque value shall be moderate in accordance with loads.
F0.12 Torque lifting selection Setting range: 0.0~30.0% Factory default setting: as per spec.
Excitation voltage falls in the zone of low frequency rotation. So, it is necessary to
compensate excitation current of the motor and enhance the torque in the state of low
frequency rotation (improve V/F characteristic), as shown in Fig.6-2.
1 Square descending
torque characteristic
2 Constant torque characteristic
Fig.6-2 Torque Lifting Diagram
The "Vb" in the figure refers to manual torque lifting voltage; "Fn" refers to rated
frequency of the inverter.
Too high torque lifting may result in over-current protection of the
inverter which may lead to failure starting of the motor. When this
occurs, the setting value shall be decreased properly.
WARNING
Heat dissipation will be less effective when a motor runs at a low
frequency for a long period. Oversetting of torque lifting value in
this case may speedup this phenomena and lead to burnout of the
motor. DO keep in mind to take a forced method to release heat
from the exterior of motor or perform derating before use.