Chapter 7 Troubleshooting VFD-S Series

7.9 Motor cannot Run

 

 

 

 

 

Check PU01

No

 

Motor cannot run

 

 

 

for normal

 

 

 

 

 

 

 

 

 

 

display

 

 

 

 

 

 

 

 

 

 

 

Yes

 

Reset after clearing

Yes Check if there is any

fault and then RUN

 

 

 

fault code displayed

No

Check if non-fuse breaker and magnetic contactor are ON

 

Yes

 

Check if input

No

voltage is normal

 

 

Yes

 

 

 

 

No

Set them to ON

 

Check if any faults occur, such as Lv, PHL or disconnection

 

 

It can run when

 

 

 

 

 

 

Input "RUN"

 

No

 

 

 

If jumper or DC

 

No

Use jumper

 

 

no faults occur

 

 

 

 

 

 

 

 

 

reactor is connected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

command

 

 

 

 

 

 

 

or DC reactor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

between +1 and +2/B1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

by keypad

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

Press RUN key to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

check if it can run

 

 

 

 

 

 

 

 

Maybe AC motor drive has malfunction or misoperation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

due to noise. Please contact DELTA.

 

 

 

 

 

Press UP key to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

set frequency

 

 

No Check if input FWD

 

No Check if the wiring

Yes

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

or REV command

 

 

 

 

 

 

of terminal FWD

 

 

 

 

Change switch or relay

 

 

Press UP to

 

 

 

 

 

 

 

 

 

 

and between

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REV-DCM is correct

 

 

 

 

 

 

 

 

check if motor

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

can run

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

No

No Set frequency or not

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct connection

 

 

 

 

 

 

 

 

 

 

Modify frequency

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

setting

 

 

 

 

if upper bound freq.

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and setting freq. is

 

 

 

 

 

 

 

 

Check if the parameter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

lower than the min.

 

 

 

 

 

 

 

 

setting and wiring of

 

 

 

Yes

Change defective

 

 

 

 

 

 

 

 

 

 

 

 

output freq.

 

 

 

 

 

 

 

 

analog signal and

 

 

 

 

potentiometer and

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

 

 

multi-step speed

 

 

 

 

relay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

are correct

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check if there is any

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Motor has malfunction

 

 

 

 

No

 

Maybe AC motor drive has malfunction.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

output voltage from

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

terminals U, V and W

 

 

 

 

 

Please contact DELTA.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

If load is too large

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check if motor

 

 

 

 

No

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check if the setting

 

 

 

 

 

connection

 

 

 

 

 

Connect correctly

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes

is correct

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

of torque

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

compensation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is correct

 

 

 

 

 

 

Motor is locked due to large load, please reduce load.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No

 

 

 

 

 

 

For example, if there is a brake, check if it is released.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Increase the setting of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

torque compensation

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7-6

Revision August 2006, SE08, SW V2.61

Page 143
Image 143
Delta Electronics VFD007S23A manual Motor cannot Run

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.