13. The soft starter reports a fault when starting, the soft starter does not work, and the motor does not respond.
The cause of the failure may be: a- motor phase loss (check the motor and peripheral circuits) b- the main component thyristor in the soft starter is short-circuited (check whether the motor and grid voltage are abnormal. Contact the manufacturer to replace the thyristor) c- filter Board breakdown short circuit (replace the filter board))
14. When the soft starter starts the load, the start time-out phenomenon occurs. The soft starter stops working and the motor coasts to a stop.
The reasons for the failure may be: a-The parameter setting is unreasonable (re-set the parameters, the initial voltage is appropriately increased, and the time is appropriately lengthened) b-The full load starts when starting, (the load should be reduced as much as possible when starting)
15. During the starting process, the current is unstable and the current is too large.
The reasons for the failure may be: a- The indication of the ammeter is inaccurate or does not match the transformer (replace with a new ammeter) b- The grid voltage is unstable and the fluctuation is relatively large, causing the soft starter to malfunction (contact the manufacturer to replace the control board) c – The soft starter parameter setting is unreasonable. (re-tuning parameters)
16. The soft starter starts repeatedly.
The reasons for the failure may be: a- During the starting process, the peripheral protection components act, and the contactor cannot be pulled in, resulting in repeated starting of the soft starter (check the peripheral components and lines)
17. The overheating fault light is on when starting, and the soft starter stops working.
The reasons for the failure may be: a- Frequent starting, which leads to overheating, and causes the soft starter to overheat protection action. (The number of starts of the soft starter should be controlled to no more than 6 times per hour, especially for heavy loads, be sure to pay attention) b- During the starting process, the protection element acts so that the contactor cannot be bypassed, and the soft starter works for a long time. cause protective action. (Check the peripheral circuit) c- Over-load start time is too long to cause overheating protection. (When starting, reduce the load as much as possible) d- The parameter setting of the soft starter is unreasonable. If the time is too long, the starting voltage is too low. (Raise the starting voltage) The cooling fan of the e-soft starter is damaged and cannot work normally. (replace the fan)
18. SCR damage
The reasons for the failure may be: a- When the motor is starting, the overcurrent will break down the soft starter (check whether the power of the soft starter matches the power of the motor, and whether the motor is started with load) b- The cooling fan of the soft starter is damaged (replace the fan) c-frequent starting, high temperature will damage the thyristor (control the number of starts) d-filter board damage (replace damaged components)
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