telemecanique vfd fault code 2

Drive does not start, no fault displayed
• If the display does not light up, check the power supply to the drive.
• The assignment of the "Fast stop" or "Freewheel" functions will prevent the drive starting if the corresponding logic inputs are not powered up. The Altivar vfd then displays [Freewheel] (nSt) in freewheel stop and [Fast stop] (FSt) in fast stop.

This is normal since these functions are active at zero so that the drive will be stopped safely if there is a wire break.
• Make sure that the run command input or inputs are activated in accordance with the selected control mode ([2/3 wire control] (tCC) and [2 wire type] (tCt) parameters,)

• If an input is assigned to the limit switch function and this input is at zero, the drive can only be started up by sending a command for the opposite direction.

• If the reference channel or command channel is assigned to a communication bus, when the power supply is connected, the drive will display [Freewheel] (nSt) and remain in stop mode until the communication bus sends a command.

Faults, which cannot be reset automatically
The cause of the fault must be removed before resetting by turning off and then back on.
AnF, brF, ECF, EnF, SOF, SPF and tnF faults can also be reset remotely by means of a logic input or control bit ([Fault reset] (rSF) parameter).
AnF, EnF, InFA, InFb, SOF, SPF, and tnF faults can be inhibited and cleared remotely by means of a logic input or control bit ([Fault inhibit assign.] (InH) parameter).

////
Drive state codes:
The display flashes when a value is stored.
Normal display, with no fault present and no startup:
- ACC: Acceleration
- CLI: Current limit
- CTL: Controlled stop on input phase loss
- DCB: DC injection braking in progress
- DEC: Deceleration
- FLU: Motor fluxing in progress
- FST: Fast stop
- NLP: No line power (no line supply on L1, L2, L3)
- NST: Freewheel stop
- OBR: Auto-adapted deceleration
- PRA: Power Removal function active (drive locked)
- RDY: Drive ready
- RUN: Drive running
- SOC: Controlled output cut in progress
- TUN: Auto-tuning in progress
- USA: Undervoltage alarm

////

InFA [Internal-mains circuit]
• The input stage is not operating correctly
• Perform the diagnostic tests via the [1.10 DIAGNOSTICS] menu.
• Inspect/repair the drive
----------------
InFb [Internal- th.sensor]
• The drive temperature sensor is not operating correctly
• The braking unit's temperature sensor is not operating correctly.
• Replace the drive temperature sensor
• Inspect/repair the drive
• Replace the braking unit's temperature sensor
• Inspect/repair the braking unit
• The monitoring of this fault must be disabled by the [Brake res. fault Mgt.] (bUb) parameter, page 241 if there is no braking unit connected to the drive.
----------------
InFC [Internal-time meas.]
• Fault on the electronic time measurement component
• Inspect/repair the drive
----------------
InFE [internal- CPU ]
• Internal microprocessor fault
• Turn off and reset. Inspect/repair the drive.
----------------
OCF [Overcurrent]
• Parameters in the [SETTINGS] (SEt-) and [1.4 MOTOR CONTROL] (drC-) menus are not correct.
• Inertia or load too high
• Mechanical locking
• Check the parameters.
• Check the size of the motor/drive/load.
• Check the state of the mechanism.
----------------
PrF [Power removal]
• Fault with the drive’s "Power removal" safety function
• Inspect/repair the drive
----------------
SCF1,SCF2,SCF3 [Motor short circuit]
• Short-circuit or grounding at the drive output
• Significant earth leakage current at the drive output if several motors are connected in parallel
• Check the cables connecting the drive to the motor, and the motor insulation.
• Perform the diagnostic tests via the [1.10 DIAGNOSTICS] menu.
• Reduce the (PWM) switching frequency.
• Connect chokes in series with the motor.
• Check the adjustment of speed loop and brake.
• Increase the [Time to restart] (ttr).
----------------
SOF [Overspeed]

• Instability or driving load too high

• Check the motor, gain and stability parameters.
• Add a braking resistor.
• Check the size of the motor/drive/load.
• Check the parameters settings for the [FREQUENCY METER] (FqF-) function,, if it is configured
----------------
SPF [Speed fdback loss]

• Encoder feedback signal missing
• Signal on "Pulse input" missing, if the
input is used for speed measurement
• Check the wiring between the encoder and the drive
• Check the encoder
• Check the wiring of the input cable and the detector used
----------------
tnF [Auto-tuning]
• Special motor or motor whose power is not suitable for the drive
• Motor not connected to the drive
• 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 autotuning
----------------
APF [Application fault]
• Controller Inside card fault
• Please refer to the card documentation
----------------
bLF [Brake control]
• Brake release current not reached
• Brake engage frequency threshold [Brake engage freq] (bEn) only regulated when brake logic control is assigned
• Check the drive/motor connection
• Check the motor windings
• Check the [Brake release I FW] (Ibr) and [Brake release IRev] (Ird) settings,
• Apply the recommended settings for [Brake engage freq] (bEn).
----------------
CnF [Com. network]

• Communication fault on communication card
• Check the environment (electromagnetic compatibility)
• Check the wiring.
• Check the time-out
• Replace the option card
• Inspect/repair the drive
----------------
COF [CANopen com.]
• Interruption in communication on the CANopen bus
• Check the communication bus.
• Check the time-out
• Refer to the CANopen User's Manual
----------------
EPF1 [External flt-LI/Bit]

• Fault triggered by an external device, depending on user
• Check the device which caused the fault, and reset
----------------
EPF2 [External fault com.]
• Fault triggered by a communication network
• Check for the cause of the fault and reset
----------------
FCF2 [Out. contact. open.]
• The output contactor remains open although the closing conditions have been met
• Check the contactor and its wiring
• Check the feedback circuit
----------------
LCF [input contactor]
• The drive is not turned on even though [Mains V. time out ] (LCt) has elapsed.
• Check the contactor and its wiring
• Check the time-out
• Check the line/contactor/drive connection LFF2,LFF3,LFF4
• Loss of the 4-20 mA reference on analog input AI2, AI3 or AI4
• Check the connection on the analog inputs.
----------------
ObF [Overbraking]
• Braking too sudden or driving load
• Increase the deceleration time
• Install a braking resistor if necessary
• Activate the [Dec ramp adapt.] (brA) function, if it is compatible with the application
----------------
OHF [Drive overheat]
• Power board -PCB over temperature
• Braking unit over temperature
• Phase module over temperature
• Rectifier over temperature
• Check the motor load, the drive ventilation and the ambient temperature. Wait for the drive to cool down before restarting
----------------
OLF [Motor overload]
• Triggered by excessive motor current
• Check the setting of the motor thermal protection, check the motor load. Wait for the drive to cool down before restarting.
----------------
OPF1 [1 output phase loss]
• Loss of one phase at drive output
• Check the connections from the drive to the motor
----------------
OPF2 [3 motor phase loss]
• Motor not connected or motor power too low
• Output contactor open
• Instantaneous instability in the motor current
• Check the connections from the drive to the motor
• If an output contactor is being used, parameterize [Output Phase Loss] (OPL) = [Output cut] (OAC).
• Test on a low power motor or without a motor:In factory settings mode, motor phase loss detection is active [Output Phase Loss] (OPL) = [Yes] (YES). To check the drive in a test or maintenance environment, without having to use a motor with the same rating as the drive (in particular for high power drives), deactivate motor phase loss detection [Output Phase Loss] (OPL) = [No] (nO)
• Check and optimize the following parameters: [IR compensation] (UFr), page 76, [Rated motor volt.] (UnS) and [Rated mot. current] (nCr) page 70 and perform [Auto-tuning] (tUn) page 71.
----------------
OSF [Mains overvoltage]
• Line voltage too high
• Disturbed mains supply
• Check the line voltage