Common troubleshooting methods for Reynolds soft starters.
During the debugging process of the soft starter, the fault light is on, the motor is unresponsive, and the cause of the fault is analyzed:
When the start-up method is live, the operation sequence is wrong (the correct operation sequence must be delivered to the main power supply first, and then the control power supply).
Power supply phase loss, soft start protection action (check power supply)
The output of the soft starter is not connected to the load (the soft starter can only work properly after the output is connected to the load)
After the start-up is completed during use, the side contactor is not adsorbed, and the cause of the failure is analyzed:
When starting, the protection device malfunctions due to small setting. (Resetting the protective device is sufficient)
During debugging, the parameters of the soft starter are not set properly. (Mainly for soft starters below 55KW, re-set the parameters of soft starters)
Poor contact of the control line (check the control line)
During the start-up process, the user occasionally skips the air switch. Failure Cause Analysis:
The setting value of the long delay of the pneumatic switch is too small or the selection of the pneumatic switch does not match the motor. (Amplify the air switch parameter appropriately or reselect the air switch)
The start-up voltage parameter of the soft starter is set too high or the start-up time is too long. (Appropriately reduce the start-up voltage or shorten the start-up time according to the load situation)
During the start-up process, the soft starter is prone to issue wrong instructions due to large fluctuations in the grid voltage. Bypass in advance. (It is recommended that users do not start high-power motors at the same time.)
Full load start at start-up (minimize load at start-up)
When the user uses the soft starter, the display is not displayed or the coding is confused. The soft starter is not working. The causes of the failure can be:
During the use of the soft starter, the internal connection of the soft starter is loose due to the vibration of the external components (open the cover of the soft starter and reinsert the connection of the monitor).
Soft-start control board failure (contact manufacturer to replace control board)
The soft starter fails when starting, the soft starter does not work, the motor does not respond, and the cause of the failure is analyzed:
Motor phase loss (check the motor and surrounding circuits)
Thyristor short circuit of the main component in the soft starter (check if the motor and grid voltage are abnormal). Contact the manufacturer for a thyristor)
Filter plate destruction short circuit (filter plate replacement)
When the soft starter starts the load, the startup times out. The soft starter stops working, and the motor stops freely. The causes of the failure are as follows:
Unreasonable parameter setting (readjust the parameters, increase the starting voltage appropriately, and extend the time appropriately)
Full load start at startup (minimize load at startup)
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