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Now I have made a summary of the common fault F0022 of the Siemens Inverter I encountered. The possible reasons are the following:
1, the first point is the most common one failure, that is, poor contact components, this is a defect in the MM440 design, inverter in the actual operating environment, it is inevitable that vibration, resulting in the emergence of the above problems.
Solution: If F0022 appears when the inverter is powered on and cannot be reset, reinsert the I/O board or give a proper tap (I tried), if not, send it for repair.
2, motor cable grounding solution: First check the motor, the cable is grounded, if determined, in order not to affect the production, can be changed to the motor cable.
3. Short circuit of IGBT (common fault) or short circuit of braking unit (uncommon). The resistance value of braking resistor is too low. If the fault occurs at the instant of inverter startup, check whether the ramp-up time is too short.
When the Siemens mm440 inverter power on the F0022 alarm appears, in fact, Siemens 440 inverter protection is more, for the applause code collectively referred to as F0022 fault code, F0022 fault I also encountered too much, if sometimes reported, sometimes not Newspaper! In most cases, it is the problem of the internal connectors of the inverter. My experience is: Remove the connectors of the inverter's control board and the main board of the control board in the bottom and reinstall it again. Observe that there are no Loose pin phenomenon, the screw should not be tightened first, give a running signal at the same time with a manual moving plate, if F0022 appears, I think the fault point can be found. Then take certain measures until you do not use the hand regardless of how the board fails and then tighten the screws
Siemens MM440 alarm F0022 common fault analysis
Nowadays, for applications requiring multiple motor speeds, they are controlled by frequency converters. Our company has many types of frequency converters in use, such as Siemens, Yaskawa, ABB, Fujitsu, etc., with sizes ranging from more than 100 kilowatts to several kilowatts. Wait.