Chziri ZVF9V-G/P, User Manual

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6.1 Schedule of Function Parameters 6.1 Schedule of Function Parameters
Group FA Advanced Function Parameters
FA.00Zero frequency operation threshold Setting range: 0.00~50.00Hz Default setting: 0.00Hz
FA.01 Zero frequency clipping Setting range: 0.00~50.00Hz Default setting: 0.00Hz
This parameter defines frequency's zero characteristic. If analog signal is used to set
the frequency, the inverter's output will be interfered due to instabilityof analog
signal. The lagging function of this parameter can be used to avoid fluctuation near
zero point, as shown in Fig.6-33. Take the example of analog voltage input path AVI:
Voltage
Input
Frequency
Voltage
Frequency
Fig.6-33 Zero Frequency Clipping Operation
Once the operation command is ordered, if the parameter (FA.00, FA.01) is not set,
the output frequency will output in strict accordance with the correlation between
analog voltage and frequency. Once FA.00 and FA.01 setting is done, if the
corresponding input AVI does not reach the frequency A.00+FA.01, the inverter
will not run till the corresponding input AVI reaches the frequency FA.00+FA.01.
Then the motor will begin the starting and accelerate to the frequency value
corresponding to AVI in the preset acceleration time. During deceleration, the
inverter will not stop when the frequency reaches FA.00+FA.01. It will stop only
when the setting frequency corresponding to AVI reaches or is lower than FA.00.
By using this function, inverter's sleep function can be performed and energy-
saving can thus be realized.
FA.02 Energy consumption dynamic braking initial voltage Setting range 300~750V Default setting As per spec.
FA.03Energy consumption dynamic braking proportional action Setting range 10~100%
Default setting As per spec.
This function defines action parameters for inverter's built-in braking units. If the inverter's
inside DC-voltage is higher than dynamic braking initial voltage, then the built-in braking units
start action. If a braking resistor is connected at the moment, DC voltage will fall after a rise
through a braking resistor which releases DC voltage pumping-up inside the inverter. When DC
voltage falls to a certain value, the inside braking units of the inverter will shut down.
Dynamic braking proportional action is used to define average voltage value applied onto braking
resistors when braking units start action. The braking resistor voltage is the voltage pulse width
modulation wave, whose duty ratio is
equivalent to braking action ratio . The larger value the
proportional action is, the faster the energy releases, the more obvious the effect is and the larger
power rate consummated by braking resistors. Therefore, user may set this parameter with full
consideration of the braking resistance value, power rate and expected braking effect.
FA.04 Cooling fan control Setting range 0~1 Default setting 1
This function is used to control the action of the inverter's built-in cooling fan.
0
Auto control mode
The cooling fan works once the inverter is started and stops automatically if the
inverter stops or the radiator temperature is detected to be below 40 .
1
The fan keeps running once being energized and doesn't stop until power
failure.
FA.05 UP/DOWN terminal modification velocity Setting range 0.01~100.0Hz/s
Default setting 1.00Hz/s
This parameter can regulate the frequency up and down velocity by UP/DOWN
FA.06 Over modulation enabled Setting range 0~1 Default setting 0
This function can raise the output voltage which increases torque output if PWM
works in an occasion that the modulation ratio>1, whereas it may increase the
harmonic component of output voltage, resulting in waveform variation of current.
If the line voltage maintains low (the rated voltage <15%) for a long time, or the
motor's output torque is lower than power frequency when the inverter is in the
state of operation, i.e., with long-term heavy loads, then this function shall be
recommended.
Terminal control frequency .
FA.07 Clocking time Setting range 0~65535s Default setting 0s
This function is used to set the time for clocking, Compare F4.00~F4.05 with F4.07~F4.09 for use.