Delta Electronics 460V Series, 230V Series, 115V Series manual Group 6 Protection Parameters

Chapter 5 ParametersVFD-S Series

Group 6: Protection Parameters

6-00	Over-Voltage Stall Prevention		Unit: 0.1
			Factory Setting: d1
	Settings d0	Disable
	d1	Enable

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 braking resistors should be used.

6-01	Over-Voltage Stall Prevention Level	Unit: 1
	Settings 230V Series d350 to d410V	Factory Setting: 390
	460V Series d700 to d820V	Factory Setting: 780

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 braking resistors should be used.

5-52 Revision August 2006, SE08, SW V2.61