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Sinamics V20 Fault Codes

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"Sinamics V20 Fault Codes" indicate an error occur in drive due to internal hardware problem or parameter issue. With the help of these error code you can easily identify and correct the issue in drive.

Fault codes Siemens Sinamics V20 Fault Codes and their solutions:

F1 Overcurrent- This fault comes when a short circuit to the ground or in the output cable, motor overload, or mechanical blocking of the shaft. To fix the error, you need to ensure that the motor power matches the power of the frequency converter in the absence of ground faults and cables, then ensure that there is no mechanical blockage. If the problem persists, you must increase the acceleration time and reduce the starting torque.

F3 Undervoltage- When encountering a DC link voltage undervoltage fault with a Siemens SINAMICS V20 drive, it indicates that the voltage level in the DC link has dropped below the acceptable threshold.

F2 Overvoltage- This fault comes when too fast braking in electrodynamic mode and excess voltage in the network. To eliminate this fault, it is necessary to ensure that the rated mains voltage is within acceptable limits and to check the activation of the Vdc controller and its correct configuration.F3 Undervoltage
This fault indicates an unacceptably low voltage value. To fix it, you need to measure the voltage in the power supply network.

F4 Inverter overtemperature- There can be several reasons for this fault: failure of the built-in fan, invalid pulse frequency, device overload, and high ambient temperature. To get rid of the problem, you need to determine if your VFD meets the required power, check the temperature where the device is installed, and make sure the fan is working properly.

F5 Inverter I2t- This type of error indicates that the motor power is too high, the load cycle is high, and the frequency converter overloads. To troubleshoot, you need to check the electric motor's and frequency converter's technical characteristics and ensure that the load cycle does not exceed the limit values.

F6 Chip temperature rise exceeds critical levels- The main reasons you may see this message are insufficient acceleration time or excessive starting load. To fix the error, you need to check if the load matches the capabilities of your device and, if necessary, increase the acceleration time.

F11 Motor overtemperature- This error appears if you use 4 or 2 pole micromotors for voltages up to 250 V, at a low frequency of 15 Hz. To fix the problem check the motor temperature and if it is normal then you need to reset the P0335 characteristic to 1. In other cases, you must check the load cycle and overheating parameters.

F12 Inverter temperature signal lost- This message indicates an open circuit in the heatsink temperature sensor of your VFD. You must check the cable for damage and restore its integrity in such cases.

F20 DC ripple too high- The calculated DC ripple level has exceeded the safe threshold. This is commonly caused by loss of one of the mains input phases.

F41 Motor data identification failure- This fault comes when motor data identification failed.

F51 Parameter EEPROM fault- Read or write failure while access to EEPROM. This can also be caused by the EEPROM being full, too many pa- rameters have been changed.

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