Siemens midimaster fault - manual
Siemens vfd Midimaster (Legacy series) FAULT CODES and User manuals
stored in parameter P930. e.g. ‘0004’ indicates that the last error was F004.
F001 Overvoltage
Check whether supply voltage is within the limits indicated on the rating plate.
Increase the ramp down time (P003) or apply braking resistor (option).
Check whether the required braking power is within the specified limits.
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F002 Overcurrent
Check whether the motor power corresponds to the inverter power.
Check that the cable length limits have not been exceeded.
Check motor lead and motor for short–circuits and earth faults.
Check whether the motor parameters (P081 – P086) correspond with the motor being used.
Check the stator resistance (P089).
Increase the ramp–up time (P002).
Reduce the boost set in P078 and P079.
Check whether the motor is obstructed or overloaded.
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F003 Overload
Check whether the motor is overloaded.
Increase the maximum motor frequency if a motor with high slip is used.
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F004 Overheating of motor
(monitoring with PTC)
Check whether the motor is overloaded.
Check the connections to the PTC.
Check that P087 has not been set to ‘1’ without a PTC being connected.
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F005 Inverter overtemperature or motor
overtemperature by I2t calculation 1
Check that the ambient temperature is not too high.
Check that the air inlet and outlet are not obstructed.
Check that the motor current does not exceed the value set in P083.
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F006 Mains phase missing 2
(3–phase units only)
Check the mains supply and correct.
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F008 USS protocol timeout Check the serial interface.
Check the settings of the serial comminication bus master and P091 – P093.
Check whether the timeout interval is too short (P093).
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F009 Undervoltage Check the supply voltage.
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F010 Initialisation fault 3 Check the entire parameter set. Set P009 to ‘0000’ before power down.
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F011 Internal interface fault 3 Switch off power and switch on again.
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F013 Programme fault 3 Switch off power and switch on again.
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F015 Failure to start on the fly Try setting P016 to a different value.
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F106 Parameter fault P006 Parameterise fixed frequency(ies) and/or motor potentiometer on the digital inputs.
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F112 Parameter fault P012/P013 Set parameter P012 < P013.
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F151 – F154 Digital input parameter fault Change the settings of digital inputs P052 to P055.
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F188 Automatic calibration failure Motor not connected to inverter – connect motor.
If the fault persists, set P088 = 0 and then enter the stator resistance of the motor into P089 manually.
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F201 P006 = 1 while P201 = 2 Change parameter P006 and/or P201.
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F212 Parameter fault P211/P212 Set parameter P211 < P212.
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1 This trip can only be reset by switching off the inverter and switching on again, even when the unit is cool.
2 Only active on 3–phase 400 – 500 V MICRO MASTERS. It will only detect the missing phase when the inverter is
operating at > 50% load.
3 Ensure that the wiring guidelines described in section 2.1 have been complied with.
When the fault has been corrected the inverter can be reset. To do this press button P twice (once to display P000 and
the second time to reset the fault), or erase the fault via a binary input (see parameters P051 – P055 in section 5).
+ Siemens MIDIMASTER User manual (pdf)
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