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Delta Electronics VFD007S23A manual Electromagnetic/Induction Noise, Environmental Condition

Models: VFD007S23A

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Chapter 7 Troubleshooting VFD-S Series

7.13 Electromagnetic/Induction Noise

Many sources of noise surround AC motor drives and penetrate it by radiation or conduction. It may cause malfunctioning of the control circuits and even damage the AC motor drive. Of course, there are solutions to increase the noise tolerance of an AC motor drive. But this has its limits. Therefore, solving it from the outside as follows will be the best.

1.Add surge suppressor on the relays and contacts to suppress switching surges.

2.Shorten the wiring length of the control circuit or serial communication and keep them separated from the power circuit wiring.

3.Comply with the wiring regulations by using shielded wires and isolation amplifiers for long wire length.

4.The grounding terminal should comply with the local regulations and be grounded independently, i.e. not to have common ground with electric welding machines and other power equipment.

5.Connect a noise filter at the mains input terminal of the AC motor drive to filter noise from the power circuit. VFD-S can have a built-in filter as option.

In short, solutions for electromagnetic noise exist of “no product”(disconnect disturbing equipment), “no spread”(limit emission for disturbing equipment) and “no receive”(enhance immunity).

7.14 Environmental Condition

Since the AC motor drive is an electronic device, you should comply with the environmental conditions as stated in the Chapter 2.1. The following step should also be.

1.To prevent vibration, the use of anti-vibration dampers is the last choice. Vibrations must be within the specification. Vibration causes mechanical stress and it should not occur frequently, continuously or repeatedly to prevent damaging to the AC motor drive.

2.Store the AC motor drive in a clean and dry location, free from corrosive fumes/dust to prevent corroded contacts. It also may cause short by low insulation in a humid location. The solution is to use both paint and dust-proof. For particular occasion, use the enclosure with whole-seal structure.

3.The ambient temperature should be within the specification. Too high or too low temperature will affect the lifetime and reliability. For semiconductor components, damage will occur once any specification is out of range. Therefore, it is necessary to periodically check air quality and the cooling fan and provide extra cooling of necessary. In addition, the microcomputer may not work in extremely low temperatures, making cabinet heating necessary.

Revision August 2006, SE08, SW V2.61

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Page 146
Image 146
Delta Electronics VFD007S23A manual Electromagnetic/Induction Noise, Environmental Condition
Page 145 Page 147

VFD007S23A specifications

Delta Electronics VFD007S23A is a highly versatile and efficient variable frequency drive (VFD) designed to control AC motors and enhance energy savings in various industrial applications. Known for its robust performance, this drive provides precise motor control and has become a preferred choice in industries requiring reliable and efficient motor management.

One of the main features of the VFD007S23A is its compact design, which makes it suitable for installations with limited space. With a compact size of only 200mm in height, 150mm in width, and 110mm in depth, it can be easily integrated into existing systems without needing extensive modifications.

The VFD supports a wide range of input voltages, accommodating 200V to 240V three-phase power supply. It is capable of delivering up to 0.75 kW of power, making it suitable for various applications including fans, pumps, and conveyors. Its adjustable frequency output allows for speed control, enhancing process efficiency and reducing energy consumption.

Equipped with advanced control technologies, the VFD007S23A offers both scalar and vector control modes. Scalar control is ideal for applications where precise speed control is not critical, while vector control provides superior torque performance, making it ideal for applications requiring high acceleration and deceleration. This feature allows users to achieve optimal performance regardless of the application requirements.

Incorporating features such as keypad programming, the VFD includes user-friendly interface allowing for easy setup and adjustments. The drive also supports various communication protocols, including Modbus RTU, enabling seamless integration into existing automation systems.

Another significant characteristic is its built-in protection features, including over-voltage, under-voltage, phase loss, and overload protection. These safety features ensure the durability and reliability of the device, extending its lifespan and minimizing downtime.

Additionally, the VFD007S23A is designed with energy efficiency in mind. It features an energy-saving mode that can reduce energy consumption significantly in variable load applications. By adjusting the motor speed according to the actual load demand, users can achieve lower operational costs while contributing to environmental sustainability.

In conclusion, Delta Electronics VFD007S23A stands out as an efficient and reliable choice for variable frequency drive applications. Its robust design, advanced control technologies, and energy-saving features make it ideal for a wide range of industrial applications, ensuring optimal performance and operational efficiency.