Diagnostics and Troubleshooting
NVE41295 04/2018 311
Fault detection codes which require a power reset after the detected fault is cleared
The cause of the detected fault must be removed before resetting by turning off and then back on.
ASF, brF, SOF, SPF and tnF detected faults can also be cleared remotely by means of a logic input
or control bit ([Fault reset] (rSF) parameter, page 251
).
Detected Fault Name Probable cause Remedy
AnF
[Load slipping]
• The difference between the output
frequency and the speed feedback is not
correct.
• Check the motor, gain and stabillity parameters.
• Add a braking resistor.
• Check the size of the motor/drive/load.
• Check the encoder's mechanical coupling and its wiring.
• Check the setting of parameters
ASF
[Angle Error]
• This occurs during the phase-shift angle
measurement, if the motor phase is
disconnected or if the motor inductance is
too high.
• Check the motor phases and the maximum current allowed
by the drive.
brF
[Brake feedback]
• The brake feedback contact does not
match the brake logic control.
• The brake does not stop the motor quickly
enough (detected by measuring the
speed on the "Pulse input" input).
• Check the feedback circuit and the brake logic control
circuit.
• Check the mechanical state of the brake.
• Check the brake linings.
CrF1
[Precharge]
• Charging relay control detected fault or
charging resistor damaged.
• Turn the drive off and then turn on again.
• Check the internal connections.
• Contact Schneider Electric Product Support.
EEF1
[Control Eeprom]
• Internal memory detected fault, control
block.
• Check the environment (electromagnetic compatibility).
• Turn off, reset, return to factory settings.
• Contact Schneider Electric Product Support.
EEF2
[Power Eeprom]
• Internal memory detected fault, power
card.
FCF1
[Out. contact.
stuck]
• The output contactor remains closed
although the opening conditions have
been met.
• Check the contactor and its wiring.
• Check the feedback circuit.
HdF
[IGBT desaturation]
• Short-circuit or grounding at the drive
output.
• Check the cables connecting the drive to the motor, and the
motor insulation.
ILF
[internal com. link]
• Communication interruption between
option card and drive.
• Check the environment (electromagnetic compatibility).
• Check the connections.
• Replace the option card.
• Contact Schneider Electric Product Support.
InF1
[Rating error]
• The power card is different from the card
stored.
• Check the reference of the power card.
InF2
[Incompatible PB]
• The power card is incompatible with the
control block.
• Check the reference of the power card and its compatibility.
InF3
[Internal serial link]
• Communication interruption between the
internal cards.
• Check the internal connections.
• Contact Schneider Electric Product Support.
InF4
[Internal-mftg zone]
• Internal data inconsistent. • Recalibrate the drive (performed by Schneider Electric
Product Support).
InF6
[Internal - fault
option]
• The option installed in the drive is not
recognized.
• Check the reference and compatibility of the option.
• Check that the option is well inserted into the ATV320.
InF9
[Internal- I
measure]
• The current measurements are incorrect. • Replace the current sensors or the power card.
• Contact Schneider Electric Product Support.
InFA
[Internal-mains
circuit]
• The input stage is not operating correctly. • Contact Schneider Electric Product Support.
InFb
[Internal- th.
sensor]
• The drive temperature sensor is not
operating correctly.
• Replace the drive temperature sensor.
• Contact Schneider Electric Product Support.
InFE
[internal- CPU ]
• Internal microprocessor detected fault. • Turn off and reset.
• Contact Schneider Electric Product Support.
SAFF
[Safety fault]
• Debounce time exceeded.
• SS1 threshold exceeded.
• Wrong configuration.
• SLS type overspeed detected.
• Check the safety functions configuration.
• Check the ATV320 Integrated safety Functions manual
• Contact Schneider Electric Product Support.