Tecorp HC2V9G4075 [171/182] Appendix c faq

High Performance Vector Control/Torque Control Inverter User Manual

Appendix C FAQ 149

Appendix C FAQ

I. In the case of vector control 2 with encoder speed feedback or torque control, why did the inverter

have too large running current or report E.oL1 error?

Check the hardware connection:

A: (1) Check if the PG card matches the encoder;

A: (2) Check if the PG card and the encoder are properly connected, check if there is any loose connection

or broken wire;

A: (3) Check if the connectors of the PG card and inverter control board are loose or dislocated;

A: (4) Check if the control lines for the V9-G-4018/P-4022 and current sensor of above power class are

loose or dislocated.

II. Why did the inverter have abnormal operation upon vector control 2 without encoder speed

feedback?

III. Why did the inverter have abnormal operation upon vector control 2 without encoder speed

feedback or vector control 2 with encoder speed feedback?

A: (1) Check if there exists large difference between the power class of the motor and the inverter;

A: (2) Check if parameter auto-tuning has been performed under vector control 2. For details, refer to the

setting process for parameter auto-tuning in Appendix B.

A: (3) Check if the torque reference channel and speed limiting channel are properly set. For details, refer to

setting process for torque control in Appendix B.

A: (4) Check if the control lines for the V9-G-4018/P-4022 or current sensor of above power class are loose

or dislocated.