Appendix B Accessories

1.Please select the factory setting resistance value (Watt) and the duty-cycle value (ED%).

2.If damage to the drive or other equipment are due to the fact that the brake resistors and the brake modules in use are not provided by Delta, the warranty will be void.

3.Take into consideration the safety of the environment when installing the brake resistors.

4.If the minimum resistance value is to be utilized, consult local dealers for the calculation of the Watt figures.

5.Please select thermal relay trip contact to prevent resistor over load. Use the contact to switch power off to the AC motor drive!

6.When using more than 2 brake units, equivalent resistor value of parallel brake unit can’t be less than the value in the column “Minimum Equivalent Resistor Value for Each AC Drive” (the right-most column in the table). An example of 575V 100HP, the min. equivalent resistor value for each AC motor drive is 12.5Ω with 2 brake units connection. Therefore, the equivalent resistor value for each brake unit should be 25Ω.

7.Please read the wiring information in the user manual of brake unit thoroughly prior to taking into operation.

8.Definition for Brake Usage ED%

Explanation: The definition of the barke usage ED(%) is for assurance of enough time for the brake unit and brake resistor to dissipate away heat generated by braking. When the brake resistor heats up, the resistance would increase with temperature, and brake torque would

decrease accordingly. Suggested cycle time is one minute

 

10 0%

 

 

 

Brak e Time

T1

ED% = T1 /T0 x10 0(%)

 

 

 

C ycle Time

T0

 

 

9.

For safety consideration, install an overload relay between the brake unit and the brake resistor.

 

In conjunction with the magnetic contactor (MC) prior to the drive, it can perform complete

 

protection against abnormality. The purpose of installing the thermal overload relay is to protect

 

the brake resistor from damage due to frequent brake, or due to brake unit keeping operating

 

resulted from unusual high input voltage. Under such circumstance, just turn off the power to

 

prevent damaging the brake resistor.

 

 

B-2

Revision August 2008, 03VE, SW V2.04

Page 240 Page 242
Page 241
Image 241
Delta Electronics VFD-VE Series manual Decrease accordingly. Suggested cycle time is one minute
Page 240 Page 242

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.
Top Page Image Contents