Group 6: Protection Parameters - Delta Electronics Network Device VFD-S User Manual

Chapter 5 Parameters|VFD-S Series

Group 6: Protection Parameters

6-00 Over-Voltage Stall Prevention
Settings d0
d1
During deceleration, the motor DC bus voltage may exceed its Maximum Allowable Value due
to motor regeneration. When this function is enabled, the AC drive will stop decelerating.
Maintaining a constant output frequency when it happens. The AC drive will only resume
deceleration when the voltage drops below preset value.
NOTE
With a moderate inertial load, the over-voltage during deceleration won't happen, and the drive will
stop in programmed time. The AC drive will automatically extend the deceleration time with high
inertial loads. If deceleration time is critical for the application, then dynamic brake resistors should
be used.
Over-Voltage Stall Prevention Level
6-01
Settings 230V Series d350 to d410V
During deceleration, the DC bus voltage may exceed its maximum allowable value due to
motor regeneration. When this function is enabled, the AC drive will stop decelerating.
Maintaining a constant output frequency when it happens. The AC drive will resume
deceleration when the voltage drops below preset value.
With a moderate inertial load, the over-voltage during deceleration won't happen, and the
drive will stop in programmed time. The AC drive will automatically extend the deceleration
time with high inertial loads. If deceleration time is critical for the application, then dynamic
brake resistors should be used.
5-52
Disable
Enable
460V Series d700 to d820V
Factory Setting: d1
Factory Setting: 390
Factory Setting: 780
Revision August 2008, SE09, SW V2.61
Unit: 1