Chapter 6 Fault Code Information

The AC motor drive has a comprehensive fault diagnostic system that includes several different alarms and fault messages. Once a fault is detected, the corresponding protective functions will be activated. The following faults are displayed as shown on the AC motor drive digital keypad display. The three most recent faults can be read from the digital keypad or communication.

NOTE

Wait 5 seconds after a fault has been cleared before performing reset via keypad of input terminal.

6.1 Common Problems and Solutions

Fault

Fault Descriptions

 

Corrective Actions

Name

 

 

 

 

 

 

1.

Check if motor power corresponds with the

 

 

 

AC motor drive output power.

 

 

2.

Check the wiring connections to U/T1, V/T2,

 

 

 

W/T3 for possible short circuits.

 

 

3.

Check the wiring connections between the AC

 

 

 

motor drive and motor for possible short

 

 

 

circuits, also to ground.

 

Over current

4.

Check for loose contacts between AC motor

 

 

drive and motor.

 

Abnormal increase in current.

 

 

5.

Increase the Acceleration Time.

 

 

 

 

6.

Check for possible excessive loading

 

 

 

conditions at the motor.

 

 

7.

If there are still any abnormal conditions when

 

 

 

operating the AC motor drive after a short-

 

 

 

circuit is removed and the other points above

 

 

 

are checked, it should be sent back to

 

 

 

manufacturer.

 

 

 

 

 

 

1.

Check if the input voltage falls within the

 

Over voltage

 

rated AC motor drive input voltage range.

 

2.

Check for possible voltage transients.

 

The DC bus voltage has

3.

DC-bus over-voltage may also be caused by

 

exceeded its maximum

 

motor regeneration. Either increase the

 

allowable value.

 

Decel. Time or add an optional brake resistor.

 

 

4.

Check whether the required braking power is

 

 

 

within the specified limits.

Revision August 2006, SE08, SW V2.61

6-1

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Delta Electronics VFD007S23A manual Fault Code Information, Common Problems and Solutions, Over current, Over voltage
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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.
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