Chapter 6 Fault Code InformationVFD-S Series

Fault

Fault Descriptions

 

Corrective Actions

 

Name

 

 

 

 

 

 

 

 

1. Short-circuit at motor output: Check for

 

 

 

 

possible poor insulation at the output line.

 

 

Over-current during

2. Sudden increase in motor loading: Check for

 

 

 

possible motor stall.

 

 

constant speed operation

 

 

 

3. AC motor drive output power is too small:

 

 

 

 

 

 

 

Replace the AC motor drive with the next

 

 

 

 

higher power model.

 

 

 

 

 

 

 

1. When multi-function input terminals (MI1-MI6)

 

 

External Fault

 

are set to external fault, the AC motor drive

 

 

 

stops output U, V and W.

 

 

 

2. Give RESET command after fault has been

 

 

 

 

cleared.

 

 

Internal EEPROM can not be

Return to the factory.

 

 

programmed.

 

 

 

 

 

 

Internal EEPROM can not be

Return to the factory.

 

 

programmed.

 

 

 

 

 

 

 

1.

Switch off power supply.

 

 

Drive’s internal circuitry

2.

Check whether the input voltage falls within the

 

 

abnormal.

 

rated AC drive input voltage. Switch on the AC

 

 

 

 

drive.

 

 

OH error

 

 

 

 

OV error

 

 

 

 

LV error

Return to the factory.

 

 

Current detection error

 

 

DC BUS detection error

 

 

 

 

 

 

 

 

 

Current detection error

 

 

 

 

 

When (one of) the output terminal(s) is grounded,

 

 

 

short circuit current is more than 50% of AC motor

 

 

 

drive rated current, the AC motor drive power

 

 

 

module may be damaged.

 

 

 

NOTE: The short circuit protection is provided

 

 

Ground fault

for AC motor drive protection, not for

 

 

 

protection of the user.

 

 

 

1. Check whether the IGBT power module is

 

 

 

 

damaged.

 

 

 

2. Check for possible poor insulation at the

 

 

 

 

output line.

 

 

 

1.

When the external input terminal (B.B) is

 

 

External Base Block.

 

active, the AC motor drive output will be

 

 

 

turned off.

 

 

(Refer to Pr. 8-06)

 

 

 

2.

Deactivate the external input terminal (B.B) to

 

 

 

 

 

 

 

operate the AC motor drive again.

 

 

 

1. Check if the motor is suitable for operation by

 

 

Auto accel/decel failure

 

AC motor drive.

 

 

2.

Check if the regenerative energy is too large.

 

 

 

 

 

 

3.

Load may have changed suddenly.

 

Revision August 2006, SE08, SW V2.61

6-3

Page 135 Page 137
Page 136
Image 136
Delta Electronics VFD007S23A manual Fault Descriptions Corrective Actions Name, Constant speed operation, External Fault
Page 135 Page 137

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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