The Siemens SINAMICS V20 drive may experience various fault conditions during operation. Here is a list of common fault codes and their meanings for the SINAMICS V20:
F1 Overcurrent
One of the main reasons for this fault can be the wrong choice of the converter by power, 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.
F2 Overvoltage
The main reason for this fault is 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.Siemens V20 fault codes and errors
F41 Motor data identification failure
This fault occurs due to a data read error. In this case, you need to check whether the motor is connected to the inverter and ensure the motor data is entered correctly.
F60 Asic timeout
This message occurs when internal switching is incorrect or absent. Possible reasons are problems with electromagnetic compatibility and hardware or software lack of connection. You need to reset the error and if it persists, replace the converter.
