Schneider ATV312 Solar Drives

Schneider ATV312 Solar Drives Fault Codes:

Fault Code and MeaningCause and Remedy
bLF[NETWORK FAULT]
Cause:


  • Brake release current not reached.

  • Brake engage frequency bEn = nO (not adjusted) when brake logic bLC is assigned.



Remedy:


  • Check the drive/motor connection.

  • Check the motor windings.

  • Check the Ibr setting in the FUn- menu.

  • Carry out the recommended adjustment of bEn.
CrF[PRECHARGE FAULT]
Cause:

Load relay control fault or charging resistor damaged.

Remedy:


  • Replace the drive.
EEF[EEPROM FAULT]
Cause:

Internal memory detected fault.

Remedy:


  • Check the environment (electromagnetic compatibility).

  • Replace the drive.
IF1[INTERNAL FAULT]
Cause:

Unknown range.

Remedy:


  • Replace the drive.

  • Restart drive.

  • Contact local Schneider Electric representative.
IF2[INTERNAL FAULT]
Cause:


  • MMI card not recognized.

  • MMI card incompatible.

  • Display missing.



Remedy:


  • Contact local Schneider Electric representative.
IF3[INTERNAL FAULT]
Cause:

EEPROM detected fault.

Remedy:


  • Replace the drive.

  • Contact local Schneider Electric representative.
IF4[INTERNAL FAULT]
Cause:

Industrial EEPROM detected fault.

Remedy:


  • Replace the drive.

  • Contact local Schneider Electric representative.
OCF[OVERCURRENT]
Cause:


  • Incorrect parameters in the [SETTINGS] SEt- and [MOTOR CONTROL] drC- menus.

  • Inertia or load too high.

  • Mechanical locking.



Remedy:


  • Check parameters in [SETTINGS] SEt- and [MOTOR CONTROL] drC- menus.

  • Check the size of the motor/drive/load.

  • Check the state of the mechanism.

  • Check wiring isolation if wires are in the water.
SCF[MOTOR SHORT CIRCUIT]
Cause:


  • Short-circuit or grounding at the drive output.

  • Significant ground leakage current at the drive output if several motors are connected in parallel.



Remedy:


  • Check the cables connecting the drive to the motor, and the motor insulation.

  • Reduce the switching frequency.

  • Connect chokes in series with the motor.

  • Check wiring isolation if wires are in the water.
SOF[OVERSPEED]
Cause:


  • Speed instability.

  • Spinning load too important (load too high).



Remedy:


  • Check the motor, gain and stability parameters.

  • Add a braking resistor.

  • Check the size of the motor/drive/load.
CnF[NETWORK FAULT]
Cause:

Communication detected fault on the communication card.

Remedy:


  • Check the environment (electromagnetic compatibility).

  • Check the wiring.

  • Check the time-out.

  • Replace the option card.

  • See the [CANopen fault mgt] COL parameter to define the stop mode with a CnF.
COF[CANopen FAULT]
Cause:

Interruption in communication on the CANopen bus.

Remedy:


  • Check the communication bus.

  • Refer to the product documentation.
EPF[EXTERNAL FAULT]
Cause:

Depending on user.

Remedy:


  • Depending on user.
ILF[INTERNAL LINK FAULT]
Cause:

Identification detected fault of the communication card by the drive.

Remedy:


  • Check that the option card is compatible with the drive.

  • Replace the option card.
LFF[LOSS OF 4-20 mA]
Cause:

Loss of the 4-20 mA reference on input AI3.

Remedy:


  • Check the connection on input AI3.
ObF[OVERBRAKING]
Cause:

Braking too sudden or Driving load.

Remedy:


  • Increase the deceleration time.

  • Install a braking resistor if necessary.

  • See the [Dec ramp adapt] brA function if it is compatible with the application.
OHF[DRIVE OVERHEAT]
Cause:

Drive temperature too high.

Remedy:


  • Check the motor load, the drive ventilation and the environment.

  • Wait for the drive to cool down before restarting.
OLF[MOTOR OVERLOAD]
Cause:


  • Triggered by excessive motor current.

  • [Cold stator resist.] rSC parameter value incorrect.



Remedy:


  • Check the [Mot. therm. current] ItH setting, of the motor thermal protection.

  • Check the motor load. Wait for the drive to cool before restarting.

  • Remeasure [Cold stator resist.] rSC.
OPF[MOTOR PHASE LOSS]
Cause:


  • Loss of one phase at drive output.

  • Output contactor open.

  • Motor not connected or motor power too low.

  • Instantaneous instability in the motor current.



Remedy:


  • Check the connections from the drive to the motor.

  • If an output contactor is being used, set [Output Phase Loss] oPL to [Output cut] oAC ([FAULT MANAGEMENT] FLt- menu).

  • Test on a low-power motor or without a motor: In factory settings mode, motor output phase loss detection is active ([Output Phase Loss] oPL = [Yes] YES).

  • To check the drive in a test or maintenance environment without having to switch to a motor with the same rating as the drive, deactivate motor phase loss detection ([Output Phase Loss] oPL = [No] nO).

  • Check and optimize the [IR compensation] uFr, [Rated motor volt.] unS, and [Rated mot. current] nCr parameters.

  • Perform an [Auto-tuning] tUn operation.
OSF[MAINS OVERVOLTAGE]
Cause:


  • Line voltage is too high.

  • Disturbed line supply.



Remedy:


  • Check the line voltage.
PHF

[INPUT PHASE LOSS]
Cause:

Drive incorrectly supplied or a fuse blown; Failure of one phase; Three-phase ATV312 used on a single-phase line supply; Unbalanced load; This protection only operates with the drive on load.



Remedy:


  • Check the power connection and the fuses.

  • Reset.

  • Use a three-phase line supply.

  • Disable the detection by setting [Input phase loss] IPL = [No] nO ([FAULT MANAGEMENT] FLt- menu).
SLF

[MODBUS FAULT]
Cause:

Interruption in communication on the Modbus bus; Remote display terminal enabled ([HMI command] LCC = [Yes] YES) and terminal disconnected.



Remedy:


  • Check the communication bus.

  • Refer to the relevant product documentation.

  • Check the link with the remote display terminal.
CFF

[INCORRECT CONFIG.]
Cause:

The current configuration is inconsistent; Addition or removal of an option.



Remedy:


  • Return to factory settings or retrieve the backup configuration, if it is valid. See the [Restore config.] FCS parameter.
CFI

[INVALID CONFIG]
Cause:

Invalid configuration; The configuration loaded in the drive via the serial link is inconsistent.



Remedy:


  • Check the configuration loaded previously.

  • Load a consistent configuration.
USF

[UNDERVOLTAGE]
Cause:

Insufficient line supply; Transient voltage dip; Damaged precharge resistor.



Remedy:


  • Check the voltage and the voltage parameter. Tripping threshold in [UNDERVOLTAGE] USF.

  • ATV312••••M2: 160 V

  • ATV312••••M3: 160 V

  • ATV312••••N4: 300 V

  • Replace the drive.
LL

[Low Light]
Cause:

Not enough power from photovoltaic arrays; Cloudy weather; Sunrise or sunset period.



Remedy:

Check the configuration of rPG/rIG and rPG2/rIG2 parameters.

If there is enough sunshine:

  • Clean up the photovoltaic arrays.

  • Check the installation requirements for the number of photovoltaic arrays to deliver enough power.


If there is not enough sunshine:

  • With many LL detected faults during sunrise and sunset: increase the value of [Light timeout restart] LItr.
tF

[Tank Full]
Cause:

The tank is detected full.



Remedy:

If the tank is full:

  • No action to realize.


If the tank is not full:

  • Check the liquid probe connection.

  • Check LPt and LPtP parameters.
tSF

[Tank sensor detected fault]
Cause:

Tank water sensor disconnected; Tank water sensor broken; Alarm threshold too low (LPtP value).



Remedy:


  • Check the liquid probe connection.

  • Check LPt and LPtP parameters.
ULF

[Underload detected fault]
Cause:

Not enough water to pump; Pump blocked.



Remedy:


  • Check if the pumping water level is OK.

  • Check if the pump is blocked.

  • If there is enough water and the pump is not blocked: set [State Unld. function] SUL to AUtO.