Delta VFD220B43A User Manual

Chapter 5 Parameters_VFD-B Series
5-72
Revision 10/2005, BE13, SW V4.08
Group 6: Protection Parameters
06 - 00
Over-Voltage Stall Prevention Unit: 0.1
Settings 230V series 0.1 to 255.0V Factory Setting: 390.0
460V series 0.1 to 510.0V Factory Setting: 780.0
575V series 0.1 to 1025.0V Factory Setting: 975.0
00 Disable Over-voltage Stall Prevention (with brake unit or brake resistor)
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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.
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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

Delta VFD220B43A Specifications

General

Brand	Delta
Model	VFD220B43A
Category	Controller
Language	English