Schneider Electric Altivar 12 Manual De Usuario
BBV28581 05/2010
109
Fault detection codes that can be cleared with the automatic restart function, after
the cause has disappeared
the cause has disappeared
These faults can also be cleared by turning on and off or by means of a logic input (parameter
page
).
Code
Name
Possible causes
Remedy
LFFI
AI current lost fault
Detection if:
• Analog input AI1 is configured as
• Analog input AI1 is configured as
current
•
page
is greater
than 3 mA
• Analog input current is lower than
2 mA
• Check the terminal connection
ObF
Overbraking
• Braking too sudden or driving load
too high
• Increase the deceleration time
• Install a module unit with a braking resistor if necessary
• Check the line supply voltage, to be sure that it is under
• 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)
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
before restarting. See Mounting and temperature
conditions page
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
current
• Check the setting of the motor thermal protection, check
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
• In case of using downstream contactor, check the right
connection, cable and contactor
OPF2
3 output phase loss
• Motor not connected
• Motor power too low, below 6% of
• Motor power too low, below 6% of
the drive nominal current
• Output contactor open
• Instantaneous instability in the
• Instantaneous instability in the
motor current
• Check the connections from the drive to the motor
• Test on a low power motor or without a motor: In factory
• Test on a low power motor or without a motor: In factory
settings mode, motor phase loss detection is active
Output Phase loss detection
YES
. To
check the drive in a test or maintenance environment,
without having to use a motor with the same rating as the
drive, deactivate motor phase loss detection
without having to use a motor with the same rating as the
drive, deactivate motor phase loss detection
Phase loss detection
nO
• Check and optimize the following parameters:
page
,
and
page
and perform an
page
OSF
Main overvoltage
• Line voltage too high:
- At drive power on only, the
supply is 10% over the
maximum acceptable voltage
level
maximum acceptable voltage
level
- Power with no run order, 20%
over the maximum line supply
• Disturbed line supply
• Check the line voltage