Delta Electronics VFD-L Series Especificaciones descargar pdf (Pagina 36)

VFD-M Series

5-10

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During a steady-state operation with the motor load rapidly increasing, the AC drive

output current may exceed the limit specified in Pr.27. When this occurs, the output

frequency will decrease to maintain a constant motor speed. The drive will accelerate to

the steady-state output frequency only when the output current drops below the setting

for Pr.27.

Output current

over-current

detection

level

output

frequency

time

output current

over-current

detection

level

Pr.27

time

output

freq.

time

over-current Stall Prevention

during Acceleration

Over-current Stall Prevention

during Operation

Pr.28

DC Braking Current Level Factory Setting: 00

Settings 00 to 100% Unit: 1%

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This parameter determines the amount of DC Braking Current applied to the motor during

starting and stopping. When setting the DC Braking Current, please note that 100%

corresponds to the rated current of the AC drive. It is recommended to start with a low DC

Braking Current level and then increase it until proper holding torque has been attained.

Pr.29

DC Braking Time during Start-up Factory Setting: 0.0

Settings 0.0 to 5.0 sec Unit: 0.1sec

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This parameter determines the duration for the DC Braking Current applied during

starting. DC Braking is applied until the Minimum Frequency is reached.

Pr.30

DC Braking Time during Stopping Factory Setting: 0.0

Settings 0.0 to 25.0 sec Unit: 0.1sec

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This parameter determines the duration for the DC Braking voltage to be applied during

stopping. If stopping with DC Braking is desired, then Pr.02 must be set to Ramp to

Stop (0.0).

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Delta Electronics VFD-L Series Especificaciones Pagina 36

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