Schneider ATV12 Drives

Schneider ATV12 Drives Fault Codes:

Fault Code and Meaning	Cause and Remedy
CrF1 Precharge	Cause: Charging relay control fault or charging resistor damaged. Remedy: Turn the drive off and then back on again. Check the connections. Check the stability of the main supply. Contact your local Schneider Electric representative.
InF1 Unknown drive rating	Cause: The power card is different from the card stored. Remedy: Contact your local Schneider Electric representative.
InF2 Unknown or incompatible power board	Cause: The power card is incompatible with the control card. Remedy: Contact your local Schneider Electric representative.
InF3 Internal serial link	Cause: Communication interruption between the internal cards. Remedy: Contact your local Schneider Electric representative.
InF4 Invalid industrialization zone	Cause: Inconsistent internal data. Remedy: Contact your local Schneider Electric representative.
InF9 Current measurement circuit	Cause: Current measurement is not correct due to hardware circuit. Remedy: Contact your local Schneider Electric representative.
—- Problem of application Firmware	Cause: Invalid application firmware update using the Multi-Loader tool. Remedy: Flash again the application firmware of the product.
InFb Internal thermal sensor detected fault	Cause: The drive temperature sensor is not operating correctly. The drive is in short circuit or open. Remedy: Contact your local Schneider Electric representative.
InFE Internal CPU	Cause: Internal microprocessor. Remedy: Turn the drive off and then back on again. Contact local Schneider Electric representative.
OCF Overcurrent	Cause: Parameters in the Motor control menu (drC) are not correct. Inertia or load too high. Mechanical locking. Remedy: Check the parameters. Check the size of the motor/drive/load. Check the state of the mechanism. Connect line chokes. Reduce the Switching frequency (SFr). Check the ground connection of drive, motor cable and motor insulation.
SCF1 Motor or Ground short circuit	Cause: Short-circuit or grounding at the drive output. Ground fault during running status. Commutation of motors during running status. Significant current leakage to ground if several motors are connected in parallel. Remedy: Check the cables connecting the drive to the motor, and the motor insulation. Connect motor chokes.
SCF3 Ground short circuit	Cause: See SCF1. Remedy: See SCF1 remedies.
SCF4 IGBT short circuit	Cause: Internal power component short circuit detected at power-on. Remedy: Contact your local Schneider Electric representative.
SOF Overspeed	Cause: Instability. Overspeed associated with the inertia of the application. Remedy: Check the motor. Overspeed is 10% more than Maximum frequency (tFr), so adjust this parameter if necessary. Add a braking resistor. Check the size of the motor/drive/load. Check parameters of the speed loop (gain and stability).
tnF Auto-tuning	Cause: Motor not connected to the drive. One motor phase loss. Special motor. Motor is rotating (being driven by the load, for example). Remedy: Check that the motor/drive are compatible. Check that the motor is present during auto-tuning. If an output contactor is being used, close it during auto-tuning. Check that the motor is completely stopped.
LFF1 AI current lost fault	Cause: Detection if AI1 is current, scaling > 3 mA, and input < 2 mA. Remedy: Check the terminal connection.
ObF Overbraking	Cause: Braking too sudden or driving load too high. Remedy: Increase the deceleration time. Install a module unit with a braking resistor if necessary. Check the line supply voltage.
OHF Drive overheat	Cause: Drive temperature too high. Remedy: Check the motor load, drive ventilation, and ambient temperature. Wait for the drive to cool down before restarting.
OLC Process overload	Cause: Process overload. Remedy: Check the process and the parameters of the drive to be in phase.
OLF Motor overload	Cause: Triggered by excessive motor current. Remedy: Check the setting of the motor thermal protection, check the motor load.
OPF1 1 output phase loss	Cause: Loss of one phase at drive output. Remedy: Check the connections from the drive to the motor. In case of using downstream contactor, check the right connection, cable and contactor.
OPF2 3 output phase loss	Cause: Motor not connected, low power, contactor open, or instability. Remedy: Check connections. Test on a low-power motor (set OPL = YES). To check without motor, deactivate OPL (= no). Check parameters: UFr, UnS, nCr, and perform Auto-tuning.
OSF Main overvoltage	Cause: Line voltage too high or disturbed line supply. Remedy: Check and adjust the line voltage. If intermittent, set Relay R1 to FLt and connect to upstream protection.
PHF Input phase loss	Cause: Incorrect supply, blown fuse, phase failure, or unbalanced load. Remedy: Check the power connection and the fuses. Use a 3-phase line supply. Disable the fault by setting IPL = no.
SCF5 Load short circuit	Cause: Short-circuit at drive output or during run/DC injection. Remedy: Check the cables connecting the drive to the motor, and the motor’s insulation.
SLF1 Modbus communication	Cause: Interruption in communication on the Modbus network. Remedy: Check connections of communication bus. Check time-out (ttO). Refer to the Modbus user manual.
SLF2 SoMove communication	Cause: Communication interruption with SoMove. Remedy: Check the SoMove connecting cable. Check the time-out.
SLF3 HMI communication	Cause: Communication interruption with the external display terminal. Remedy: Check the terminal connection.
SPIF PI Feedback detected fault	Cause: PID feedback below lower limit. Remedy: Check the PID function feedback. Check supervision threshold (LPI) and time delay (tPI).
ULF Process underload fault	Cause: Process underload or motor current below threshold (LUL) for time (ULt). Remedy: Check the process and the parameters of the drive to be in phase.
tJF IGBT overheat	Cause: Drive overheated (IGBT temp too high). Remedy: Check load size. Reduce Switching frequency (SFr). Wait for the drive to cool.
EPF1 External detected fault	Cause: Event triggered by an external device. Remedy: Check the device which caused the trip and reset.
CFF Incorrect configuration	Cause: HMI block replaced with different rating or inconsistent parameters. Remedy: Return to factory settings or retrieve valid backup. Contact Schneider Electric if fault remains.
CFI Invalid configuration	Cause: Configuration loaded is inconsistent or upload interrupted. Remedy: Check configuration loaded previously. Load a compatible configuration.
CFI2 Download invalid configuration	Cause: Interruption of download operation (Loader/SoMove). Remedy: Check connection. Restart download or restore factory setting.
USF Undervoltage	Cause: Line supply too low or transient dip. Remedy: Check voltage and Undervoltage Phase Loss Menu (USb) parameters.
InIt On initializing itself	Description: Micro controller initializing. Communication configuration search.
Com.E Communication error (Flashing)	Description: 50ms time-out error. Shown after 220 retry attempts.
A-17 Key alarm (Flashing)	Description: Key pressed > 10s. Membrane switch disconnected. Keypad woken up while key pressed.
cLr Confirm Fault reset (Flashing)	Description: Appears if STOP key is pressed when there is a keypad fault.
dEU.E Drive mismatch (Flashing)	Description: Drive type (brand) did not match with keypad type.
rOM.E ROM abnormality (Flashing)	Description: Keypad ROM abnormality detected by checksum.
rAM.E RAM abnormality (Flashing)	Description: Keypad RAM abnormality detected.
CPU.E The other defect (Flashing)	Description: The other detected fault.