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Delta Electronics VFD-VE Series ⋅ IM ≤ the rated current of AC motor drive a, General Precaution

Models: VFD-VE Series

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Appendix C How to Select the Right AC Motor Drive

2.3When it is running continuously

„The requirement of load capacity should be less than the capacity of AC motor drive(kVA)

The requirement of load capacity=

k ⋅ P

η⋅ cosϕ ≤ the _ capacity _ of _ AC _ motor _ drive(kVA)

„The motor capacity should be less than the capacity of AC motor driveM

k ⋅ 3 ⋅VM ⋅ IM ⋅10−3 ≤ the_ capacity_ of _ AC _ motor _ drive(kVA)

„The current should be less than the rated current of AC motor drive(A)

k ⋅ IM ≤ the _ rated _ current _ of _ AC _ motor _ drive( A)

Symbol explanation

PM

η

cosϕ

VM

IM

k

PC1

kS

nT nS

GD2

TL

tA

N

:Motor shaft output for load (kW)

:Motor efficiency (normally, approx. 0.85)

:Motor power factor (normally, approx. 0.75)

:Motor rated voltage(V)

:Motor rated current(A), for commercial power

:Correction factor calculated from current distortion factor (1.05-1.1, depending on PWM method)

:Continuous motor capacity (kVA)

:Starting current/rated current of motor

:Number of motors in parallel

:Number of simultaneously started motors

:Total inertia (GD2) calculated back to motor shaft (kg m2)

:Load torque

:Motor acceleration time

:Motor speed

C.2 General Precaution

Revision August 2008, 03VE, SW V2.04

C-3

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Delta Electronics VFD-VE Series manual ⋅ IM ≤ the rated current of AC motor drive a, General Precaution
Page 285 Page 287

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.