Delta VFD-L-I Series, User Manual

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Chapter 4 Parameters
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VFD-L-I Series
Revision July 2009, SW V1.1 4-13
This parameter sets Minimum Output Voltage of the AC drive.
The setting of parameters 01-01 to 01-06 should comply with Pr.01-02
≥
Pr.01-04
≥
Pr.01-06
；
Pr.01-01
≥
Pr.01-03
≥
Pr.01-05.
01-07 Output Frequency Upper Limit Unit: 1%
Settings 1 to 110% Factory Setting: 100
01-08
Output Frequency Lower Limit
Unit: 1%
Settings 0 to 100% Factory Setting: 0
The Maximum Output Frequency (Pr.01-00) is regarded as 100%.
The Upper/Lower Limit is to prevent operation error and machine damage.
Assume that the output frequency upper limit is set to 90% and max. operation frequency
Pr.01-00 is 60Hz, max. output frequency should be 54Hz. If the output frequency lower limit is
set to 10% and min. output frequency is 1.5Hz, it will run with 6Hz as the setting frequency is
less than 6Hz after start-up.
01-09 Acceleration Time 1 (Taccel 1) Unit: 0.01
01-10 Deceleration Time 1 (Tdecel 1) Unit: 0.01
Settings 0.10 to 600.00Sec Factory Setting: 1.00
01-11 Acceleration Time 2 (Taccel 2) Unit: 0.01
01-12 Deceleration Time 2 (Tdecel 2) Unit: 0.01
Settings 0.10 to 600.00Sec Factory Setting: 10.00
The acceleration time means the time required for the AC drive to ramp from 0 Hz to its
Maximum Output Frequency (Pr.01-00). The deceleration time means the time required for
the AC drive to decelerate from the Maximum Output Frequency (Pr.01-00) down to 0 Hz.
A Multi-Function Input terminal must be programmed to select acceleration/deceleration time
2 and the terminals must be closed to select acceleration/deceleration time 2.
In the diagram shown below, the acceleration/deceleration time of the AC drive is the time
between 0 Hz to Maximum Operation Frequency (Pr.01-00). If the Maximum Output
Frequency is 60 Hz, the actual time for the AC drive to accelerate from start-up to 60 Hz is
9.83 seconds and the deceleration time is also 9.83 seconds.