Delta VFD022B21A - Over-Current Stall Prevention During Acceleration; Over-Current Stall Prevention During Operation

Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-73
06 - 01
Over-Current Stall Prevention during Acceleration Unit: 1
Settings 20 to 250% Factory Setting: 170
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A setting of 100% is equal to the Rated Output Current of the drive.
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During acceleration, the AC drive output current may increase abruptly and exceed the value specified by
Pr.06-01 due to rapid acceleration or excessive load on the motor. When this function is enabled, the AC
drive will stop accelerating and keep the output frequency constant until the current drops below the
maximum value.
06-01
Over-Current
Detection
Level
Output
Frequency
Over-Current Stall
prevention during
Acceleration,
frequency held
output current
time
setting
frequency
previous acceleration time
actual acceleration time when over-current stall
prevention is enabled
06 - 02
Over-current Stall Prevention during Operation Unit: 1
Settings 20 to 250% Factory Setting: 170
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If the output current exceeds the setting specified in Pr.06-02 when the drive is operating, the drive will
decrease its output frequency to prevent the motor stall. If the output current is lower than the setting
specified in Pr.06-02, the drive will accelerate again to catch up with the set frequency command value.