Delta VFD-B Series, Руководство пользователя, Страница: 94 / 238

Chapter 5 Parameters
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VFD-B-P Series
Revision April 2009, SW V1.00 5-29
This parameter sets the Minimum Output Frequency of the AC motor drive.
01 - 06 Minimum Output Voltage (Vmin) Unit: 0.1
Settings 0.1 to 510.0V Factory Setting: 3.4
This parameter sets the Minimum Output Voltage of the AC motor drive.
The settings of Pr.01-01 to Pr.01-06 have to meet the condition of Pr.01-02
≥
Pr.01-04
≥
Pr.01-
06 and Pr.01-01
≥
Pr.01-03
≥
Pr.01-05.
When it is vector control mode, the settings of Pr.01-03, Pr.01-04 and Pr.01-06 are invalid.
Pr.01-05 is still the minimum output frequency.
01 - 07 Output Frequency Upper Limit Unit: 1
Settings 1 to 120% Factory Setting: 100
This parameter must be equal to or greater than the Output Frequency Lower Limit (Pr.01-08).
The Maximum Output Frequency (Pr.01-00) is regarded as 100%.
Output Frequency Upper Limit value = (Pr.01-00 * Pr.01-07)/100.
1-05 1-03 1-01
1-06
1-04
1-02
1-00
1-07
1-08
V/f Curve
Voltage
Frequency
Output Frequency
Lower Limit Output Frequency
Upper Limit
The limit of
Output
Frequency
Mid-point
Freq.
Maximum
Output
Frequency
Maximum
Output
Voltage
Mid-point
Voltage
Minimum
Output
Voltage
Minimum
Output
Freq.
Maximum Voltage
Frequency
(Base Frequency)
01 - 08 Output Frequency Lower Limit Unit: 1
Settings 0 to 100% Factory Setting: 0
The Output Frequency Lower Limit value = (Pr.01-00 * Pr.01-08) /100.
The Upper/Lower Limits are to prevent operation errors and machine damage.
If the Output Frequency Upper Limit is 50Hz and the Maximum Output Frequency is 60Hz, the
Output Frequency will be limited to 50Hz.