Ground Fault, Over Voltage OV | Delta Electronics VFD007S23A

Chapter 7 Troubleshooting VFD-S Series

7.2 Ground Fault

GFF

Ground fault

7.3 Over Voltage (OV)

Is output circuit(cable or			No
motor) of AC motor drive			No
motor) of AC motor drive
grounded?
		Yes
		Yes

	Remove ground fault

Maybe AC motor drive has malfunction or misoperation due to noise. Please contact DELTA.

Over voltage

Reduce voltage to	No Is voltage within
be within spec.		specification
			Yes
			Yes

Maybe AC motor drive has malfunction or misoperation due to noise. Please contact with DELTA.

Has over-voltage occurred without load Yes No

No When OV occurs, check if the voltage of DC BUS is greater than protection value

YesYes

Reduce moment of inertia

Dose OV occur when				Increase			Yes
sudden acceleration				deceleration
sudden acceleration				deceleration
stops				time
		Yes			No

	Increase			Yes
	acceleration					Increase setting time
	acceleration					Increase setting time
	time
	time
		No
								Need to consider using
No	Reduce moment of load inertia							braking unit or
	Reduce moment of load inertia							DC braking
								DC braking
			No
							No
	Use braking unit or DC braking						No
	Use braking unit or DC braking
				Yes

Need to check control method. Please contact DELTA.

7-2	Revision August 2006, SE08, SW V2.61

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.

Delta Electronics VFD007S23A manual Ground Fault, Over Voltage OV

Models: VFD007S23A

7.2 Ground Fault

7.3 Over Voltage (OV)

VFD007S23A specifications