AMX Distributed Audio Controllers Delta Series Specifiche Scaricare il pdf (Pagina 122)

Chapter 5 Parameters|VFD-B Series

Revision July 2008, BE16, SW V4.08 & V5.00 5-65

Group 6: Protection Parameters

06 - 00 Over-Voltage Stall Prevention Unit: 0.1

Settings 230V series 330.0 to 410.0V Factory Setting: 390.0

460V series 660.0 to 820.0V Factory Setting: 780.0

575V series 825.0 to 1025.0V Factory Setting: 975.0

00 Disable Over-voltage Stall Prevention (with brake unit or brake

resistor)

 During deceleration, the DC bus voltage may exceed its Maximum Allowable Value due to

motor regeneration. When this function is enabled, the AC motor drive will not decelerate

further and keep the output frequency constant until the voltage drops below the preset value

again.

 Over-Voltage Stall Prevention must be disabled (Pr.06-00=00) when a brake unit or brake

resistor is used.

NOTE

With moderate inertia load, over-voltage stall prevention will not occur and the real deceleration time

will be equal to the setting of deceleration time. The AC drive will automatically extend the

deceleration time with high inertia loads. If the deceleration time is critical for the application, a brake

resistor or brake unit should be used.

high voltage at DC side

over-voltage

detection level

output

frequency

time

Deceleration characteristic

when Over-Voltage Stall

Prevention enabled

Frequency Held

time

previous deceleration time

actual time to decelerate to stop when over-voltage

stall prevention is enabled

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AMX Distributed Audio Controllers Delta Series Specifiche Pagina 122