The codes in this list indicate errors and warnings occurring in the Micromaster inverter or motor drive. Each code includes a description of a specific issue, and the method for resolving these issues may vary depending on the protocols defined by the system. These codes should be read by the engineer or technician operating the system, and necessary steps must be taken to configure or repair the system properly when required.

F Codes:
These are error codes and indicate that there is a problem with the inverter or motor drive. These errors can prevent the system from operating normally, and continuing to operate without resolving them may cause damage to the system.

A Codes:
These are warning codes and indicate that there might be an issue with the system or that the system is operating outside normal conditions. These warnings typically do not disrupt the normal operation of the system but should be checked by an engineer or technician. However, a warning can potentially escalate into an error over time.
Example:

    F0001 Overcurrent:
    This error code indicates that an overcurrent condition has occurred in the inverter or motor drive. It may be caused by an issue with the power supply or a short circuit within the system.

    A0535 Brake resistor hot:
    This warning code indicates that the brake resistor's normal operating temperature has been exceeded. This condition may result from excessive use of the brake resistor or an issue within the system.

These types of definitions apply to the other codes in the list as well.

- F0001 Overcurrent. (read more >)

- F0002 Overvoltage. (read more >)

- F0003 Undervoltage. (read more >)

- F0004 Inverter overtemperature. (read more >)

- F0005 Inverter I2T. (read more >)

- F0011 Motor overtemperature. (read more >)

- F0012 No inverter temperature signal. (read more >)

- F0015 No motor temperature signal. (read more >)

- F0020 Line supply phase missing. (read more >)

- F0021 Ground fault. (read more >)

- F0022 Hardware monitoring active. (read more >)

- F0023 Output fault. (read more >)

- F0024 Rectifier temperature too high. (read more >)

- F0030 Fan failed. (read more >)

- F0035 Restart after n. (read more >)

- F0040 Fault, for automatic calibration. (read more >)

- F0041 Failure, motor data identification. (read more >)

- F0042 Fault/error when optimizing the speed controller. (read more >)

- F0051 Parameter EEPROM fault. (read more >)

- F0052 Power stack fault. (read more >)

- F0053 I/O EEPROM fault. (read more >)

- F0054 Incorrect I/O module. (read more >)

- F0060 Asic time slice overflow. (read more >)

- F0070 CB setpoint fault. (read more >)

- F0071 USS(BOP link) setpoint fault. (read more >)

- F0072 USS(COMM link) setpoint fault. (read more >)

- F0080 ADC input signal lost. (read more >)

- F0085 External fault. (read more >)

- F0090 Signal loss, encoder. (read more >)

- F0101 Stack overflow. (read more >)

- F0221 PID feedback below the minimum value. (read more >)

- F0222 PID feedback above maximum value. (read more >)

- F0422 No load applied to inverter. (read more >)

- F0450 Failure BIST tests. (read more >)

- F0452 Load torque fault detected. (read more >)

- F0453 Motor stalled. (read more >)


- A0501 Current limit value. (read more >)

- A0502 Overvoltage limit value. (read more >)

- A0503 Undervoltage limit value. (read more >)

- A0504 Inverter overtemperature. (read more >)

- A0505 Inverter I2T. (read more >)

- A0506 Inverter load duty cycle. (read more >)

- A0510 Motor overtemperature. (read more >)

- A0511 Motor overtemperature. (read more >)

P0604 alarm threshold, motor overtemperature. (read more >)

P0625 motor ambient temperature. (read more >)

- A0520 Rectifier overtemperature. (read more >)

- A0521 Ambient temperature too high. (read more >)

- A0522 Read I2C, time exceeded. (read more >)

- A0523 Output fault.. (read more >)

- A0535 Brake resistor hot. (read more >)

- A0541 Motor data identification routine active. (read more >)

- A0542 Speed controller optimization running. (read more >)

- A0590 Alarm, no signals from the speed encoder. (read more >)

- A0600 RTOS data loss alarm. (read more >)

- A0700 CB alarm 1. (read more >)

- A0701 CB alarm 2. (read more >)

- A0702 CB alarm 3. (read more >)

- A0703 CB alarm 4. (read more >)

- A0704 CB alarm 5. (read more >)

- A0705 CB alarm 6. (read more >)

- A0706 CB alarm 7. (read more >)

- A0707 CB alarm 8. (read more >)

- A0708 CB alarm 9. (read more >)

- A0709 CB alarm 10. (read more >)

- A0710 CB communications error. (read more >)

- A0711 CB communications error. (read more >)

- A0910 Vdc-max controller disabled/switched-out. (read more >)

- A0911 Vdc-max controller active. (read more >)

- A0912 Vdc-min controller active. (read more >)

- A0920 ADC parameters not correctly set. (read more >)

- A0921 DAC parameters not set properly. (read more >)

- A0922 No load at the inverter. (read more >)

- A0923 JOG counter-clockwise as well as JOG clockwise are requested. (read more >)

- A0952 Load fault detected. (read more >)

- A0936 PID auto tuning active. (read more >)

+ Micromaster User manuals >

- MicroMaster Fault code 1 >

- MicroMaster Fault code 2 >

- MicroMaster Fault code 3 >

- MicroMaster Fault code 4 >

- MicroMaster Fault code 5 >

- MicroMaster Fault code 6 >

- About Siemens Micromaster >>

++ Siemens Homepage