Fault codes and software
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4
F22 S2 Checksum error. Parameter
(RS485_SlaveAddress, RS485_BaudRate,
RS485_PartyType, RS485_StopBit,
RS485_Protocol, AIA1Mode, AIA2Mode, MeasRS-
VoltageDrop, Counter_ms,
RS485_CommTimeOut, MotorNomEfficiency, Set-
MotorNomTorque) has EEPROM CRC error
returned to default value.
F22 S3 Checksum error. Application defined parameter
variable checksum error for counter or reference
and returned to default value.
F22 S4 Checksum error. Interface powerdown variable
has a EEPROM CRC error and returned to default
value.
F22 S5 Checksum error. Interface powerdown variable
has a EEPROM CRC error and returned to default
value.
F24 Counter fault.
F25 S1 Microprocessor watchdog fault. Reason: software
bug, hardware failure, software overload.
F25 S2 Watchdog shooting of modulator.
F25 S3 Watchdog NMI. Activation of NMI interrupt.
F25 S4 Watchdog DBC. Debug.
F25 S5 Watchdog singlestep. Debug.
F25 S6 Watchdog AM. Address match interrupt.
F25 S7 Watchdog break.
F25 S8 Watchdog overflow. Overflow interrupt.
F25 S9 Watchdog UDI. Undefined instruction interrupt.
F29 Thermistor fault.
F34 S1 Internal bus communication. CRC failure of inter-
nal bus. Activated by modulator controller.
F34 S2 CRC failure of internal bus. Activated by applica-
tion controller.
F34 S3 CRC failure of internal bus. Activated by modula-
tor controller. Modulator send nothing (measured
voltage under 70V, temperature 0, electicity in
the power section).
F34 S4 CRC failure of internal bus. Modulator controller
do no wake up. External power to the control
board.
F35 Application out of RAM.
TABLE 7.
Fault codes in NXL unit.
Fault code Subcode Explanation
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