Chapter 4 Parameters

Settings

0.1 to 5.0 sec

If the duration of a power loss is less than this parameter setting, the AC motor drive will resume operation. If it exceeds the Maximum Allowable Power Loss Time, the AC motor drive output is then turned off (coast stop).

The selected operation after power loss in Pr.07-06 is only executed when the maximum allowable power loss time is ≤5 seconds and the AC motor drive displays “Lu”.

But if the AC motor drive is powered off due to overload, even if the maximum allowable power loss time is ≤5 seconds, the operation mode as set in Pr.07-06 is not executed. In that case it starts up normally.

 

07-08

Baseblock Time for Speed Search (BB)

Unit: 0.1

 

Control

VF

VFPG SVC FOCPG TQRPG

Factory Setting: 0.5

 

mode

 

 

 

 

 

 

 

Settings

0.1 to 5.0 sec

 

 

 

 

 

 

When momentary power loss is detected, the AC drive will block its output and then wait for a specified period of time (determined by Pr.07-08, called Base-Block Time) before resuming operation. This parameter should be set at a value to ensure that any residual regeneration

voltage from the motor on the output has disappeared before the drive is activated again. 7

Output frequency(H)

Output voltage(V)

Output current A

07-09 Current Limit for

Speed Search

FWD Run

B.B.

Input B.B. signal

Stop output voltage

Disable B.B. signal

Waiting time Pr.07-08

Speed search Synchronization speed detection

7Frequency command before B.B. Time

B.B. Search with last output frequency downward timing chart

Revision August 2008, 03VE, SW V2.04

4-109

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Delta Electronics VFD-VE Series manual 07-08, Baseblock Time for Speed Search BB Unit
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VFD-VE Series specifications

Delta Electronics VFD-VE Series is a state-of-the-art variable frequency drive (VFD) designed to enhance energy efficiency and improve the operational capabilities of various industrial applications. Renowned for its reliability and performance, the VFD-VE Series serves a diverse range of sectors including manufacturing, HVAC, and water treatment.

One of the primary features of the VFD-VE Series is its advanced control algorithms, which provide precise speed and torque control for AC motors. The series utilizes a vector control method that enables excellent dynamic response and a wide speed range. This is particularly beneficial for applications requiring variable speeds or precise positioning, as it ensures smooth acceleration and deceleration while maintaining optimal performance.

The VFD-VE Series stands out with its Energy Saving Technology. By intelligently optimizing motor control parameters based on the load, the VFD can significantly reduce energy consumption. This built-in functionality not only helps companies save on electricity costs but also contributes to a lower carbon footprint, aligning with global sustainability efforts.

Another key characteristic of the VFD-VE Series is its user-friendly interface. Equipped with a clear and intuitive LCD display, it simplifies monitoring and adjustments, allowing operators to configure settings easily. Additionally, the series supports various communication protocols such as Modbus, EtherCAT, and CANopen, enabling seamless integration with existing control systems for enhanced automation.

The VFD-VE Series is built to withstand harsh industrial environments. Its robust design includes features such as IP20 or IP55 ingress protection ratings, ensuring reliable operation even in dusty or humid conditions. Furthermore, the drives are equipped with advanced thermal management systems that prevent overheating, thereby prolonging the lifespan of the equipment.

Safety is also a priority in the VFD-VE Series, which incorporates multiple safety features such as overvoltage, undervoltage, and overcurrent protection. These safeguards help protect both the drive itself and the connected machinery, minimizing downtime and reducing maintenance costs.

Overall, Delta Electronics VFD-VE Series combines cutting-edge technology, energy efficiency, and robust design to meet the dynamic needs of modern industrial automation. With its advanced features and reliable performance, it is an ideal choice for businesses aiming to optimize their processes and achieve greater energy savings.
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