Chapter 4 Parameters

Output frequency

Input B.B. signal

(H)

Stop output voltage

 

Output voltage

Disable B.B. signal

(V)

Waiting time 08.07

output current A

Speed Search

07-09 Current Limit

 

for Speed Search Speed

Synchronization speed detection

Time

FWD Run

B.B.

B.B. Search with minimum output frequency upward timing chart

Output frequency(H)

Output voltage(V)

Output current A

06-03 Over-Current Stall Prevention during Accel.

FWD Run

B.B.

Input B.B. signal

Stop voltage output

Disable B.B. signal

Waiting time Pr.07-08

Speed search Synchronization speed detection

Time

B.B. Search with minimum output frequency upward timing chart

 

07-09

Current Limit for Speed Search

Unit: 1

 

 

 

 

 

 

Control

VF

VFPG SVC FOCPG TQRPG

Factory Setting: 150

 

mode

 

 

 

 

 

 

 

Settings

20 to 200%

 

 

 

 

 

 

Following a momentary power loss, the AC motor drive will start its speed search operation only if the output current is greater than the value set by Pr.8-07. When the output current is less than the value of Pr.8-07, the AC motor drive output frequency is at “speed synchronization point”. The drive will start to accelerate or decelerate back to the operating frequency at which it was running prior to the power loss.

When executing speed search, the V/f curve is operated by group 1 setting. The maximum current for the optimum accel./decel. and start speed search is set by Pr.07-09.

4-110

Revision August 2008, 03VE, SW V2.04

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Delta Electronics VFD-VE Series manual 07-09, Current Limit for Speed Search 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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