Những lỗi cơ bản của biến tần Schneider

Code

Name                                                      Possible causes                                      Remedy

CrF1

Precharge

•  Charging relay control fault or

•  Turn the drive off and then back on again

charging resistor damaged

•  Check the connections

•  Check the stability of the main supply

•  Contact your local Schneider Electric

representative

InFI

Unknown drive rating

•  The power card is different from

•  Contact your local Schneider Electric

the card stored

representative

InF2

Unknown or incompatible power

•  The power card is incompatible

•  Contact your local Schneider Electric

board

with the control card

representative

InF3

Internal serial link

•  Communication interruption

•  Contact your local Schneider Electric

between the internal cards

representative

InF4

Invalid industrialization zone

•  Inconsistent internal data

•  Contact your local Schneider Electric

representative

InF9

Current measurement circuit

•  Current measurement is not

•  Contact your local Schneider Electric

correct due to hardware circuit

representative

—-

Problem of application Firmware

•  Invalid application firmware

•  Flash again the application firmware of the

update using the Multi-Loader tool

product

InFb

Internal thermal sensor detected

•  The drive temperature sensor is

•  Contact your local Schneider Electric

fault

not operating correctly

representative

•  The drive is in short circuit or open

InFE

Internal CPU

•  Internal microprocessor

•  Turn the drive off and then back on again

•  Contact local Schneider Electric

representative

Code

Name                                                      Possible causes                                      Remedy

OCF

Overcurrent

•  Parameters in the Motor control menu drC- page  57 are not

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

correct

•  Check the state of the mechanism

•  Inertia or load too high•  Mechanical locking

•  Connect line chokes•  Reduce the Switching frequency SFr

page  59

•  Check the ground connection of drive, motor

cable and motor insulation.

SCF1

Motor short circuit

•  Short-circuit or grounding at the

•  Check the cables connecting the drive to the

drive output

motor, and the motor insulation

SCF3

Ground short circuit

•  Ground fault during running status

•  Connect motor chokes

•  Commutation of motors during

running status

•  Significant current leakage to

ground if several motors are

connected in parallel

SCF4

IGBT short circuit

•  Internal power component short

•  Contact your local Schneider Electric

circuit detected at power on

representative

SOF

Overspeed

•  Instability

•  Check the motor

•  Overspeed associated with theinertia of the application

•  Overspeed is 10% more than Maximumfrequency tFr page 57 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

•  Motor not connected to the drive

•  Check that the motor/drive are compatible

•  One motor phase loss

•  Check that the motor is present during auto-

•  Special motor

tuning

•  Motor is rotating (being driven by

•  If an output contactor is being used, close it

the load, for example)

during auto-tuning

•  Check that the motor is completely stopped

LFFI

AI current lost fault

Detection if:•  Analog input AI1 is configured as current•  AI1 current scaling parameter of

•  Check the terminal connection

0% CrL1 page  52 is greater

than 3 mA

•  Analog input current is lower than

2 mA

ObF

Overbraking

•  Braking too sudden or driving load

•  Increase the deceleration time

too high

•  Install a module unit with a braking resistor if necessary

•  Check the line supply voltage, to be sure that it is under

the maximum acceptable (20% over maximum line supply

during run status)

OHF

Drive overheat

•  Drive temperature too high

•  Check the motor load, the drive ventilation and the

ambient temperature. Wait for the drive to cool down

before restarting. See Mounting and temperature

conditions page  13.

OLC

Process overload

•  Process overload

•  Check the process and the parameters of the drive to be

in phase

OLF

Motor overload

•  Triggered by excessive motor

•  Check the setting of the motor thermal protection, check

current

the motor load.

OPF1

1 output phase loss

•  Loss of one phase at drive output

•  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

•  Motor not connected

•  Check the connections from the drive to the motor

•   Motor power too low, below 6% of

•  Test on a low power motor or without a motor: In factory

the drive nominal current•  Output contactor open

settings mode, motor phase loss detection is activeOutput Phase loss detection OPLpage 94 = YES. To

•  Instantaneous instability in the

check the drive in a test or maintenance environment,

motor current

without having to use a motor with the same rating as the

drive, deactivate motor phase loss detection OutputPhase loss detection OPL = nO

•  Check and optimize the following parameters: IRcompensation (law U/F) UFr page 58, Rated motor voltageUnS page 57 and Rated motor current nCr page  57 and perform an Auto-tuning tUn page  60.

OSF

Main overvoltage

•  Line voltage too high:

•  Check the line voltage

–  At drive power on only, the

Code

Name                                 Possible causes                                     Remedy

CFF

Incorrect

•  HMI block replaced by an HMI

•  Return to factory settings or retrieve the backup

configuration

block configured on a drive with a

configuration, if it is valid.

different rating

•  If the fault remains after reverting to the factory settings,

•  The current configuration of

contact your local Schneider Electric representative

customer parameters is

inconsistent

CFI

Invalid configuration

•  Invalid configuration

•  Check the configuration loaded previously.

(1)

The configuration loaded in the

•  Load a compatible configuration

drive via the bus or communication

network is inconsistent. The

configuration upload has been

interrupted or is not fully finished.

CFI2

Download invalid

•  Interruption of download operation

•  Check connection with Loader or SoMove.

configuration

with Loader or SoMove

•  To reset the default re-start the download operation or

restore the factory setting

USF

Undervoltage

•  Line supply too low•  Transient voltage dip

•  Check the voltage and the parameters of UndervoltagePhase Loss Menu USb- page 95.

Code

Name                                 Description

InIt

On initializing itself

•  Micro controller initializing•  Communication configuration search

COM.E (1)

Communication error

•  It has 50ms time out error.•  This message is shown after 220 retry attempts.

A-17 (1)

Key alarm

•  Key has been pressed consecutively for more than 10 seconds.•  Membrane switch disconnected.•  Keypad woken up while a key is being pressed.

cLr (1)

Confirm Fault reset

•  This message appears if the STOP key is pressed when there is a keypad fault.

dEU.E (1)

Drive mismatch

•  Drive type (brand) did not match with keypad type (brand)

rOM.E  (1)

ROM abnormality

•  Keypad ROM abnormality detected by the checksum calculation.

rAM.E (1)

RAM abnormality

•  Keypad RAM abnormality detected.

CPU.E (1)

The other defect

•  The other detected fault.