BBV28581 05/2010 107
Diagnostics and Troubleshooting
Drive does not start, no error code displayed
• If the display does not light up, check the power supply to the drive (ground and input phases connection, see page 20).
• The assignment of the "Fast stop" or "Freewheel" functions will prevent the drive starting if the corresponding logic inputs are not powered
up. The ATV12 then displays nSt in freewheel stop and FSt in fast stop, it will display rdY en freewhell stop. This is normal since
these functions are active at zero so that the drive will be stopped if there is a wire break. Assignment of LI to be checked in COnF/
FULL/FUn-/Stt- menu.
• Make sure that the run command input(s) is activated in accordance with the selected control mode (parameters Type of control tCC
page 48 and 2 wire type control tCt page 51, in COnF/FULL/ I_O-menu).
• If the reference channel or command channel is assigned to Modbus, when the power supply is connected, the drive displays "nSt"
freewheel and remain in stop mode until the communication bus sends a command.
• In factory setting "RUN" button is inactive. Adjust parameters Reference channel 1 Fr1 page 62 and Commandchannel 1 Cd1 page
63 to control the drive locally (COnF/FULL/CtL-menu). See How to control the drive locally page 46.
Fault detection codes that cannot be cleared automatically
The cause of the detected fault must be removed before clearing by turning off and then on.
SOF and tnF faults can also be cleared remotely by means of a logic input (parameter Detected fault reset assignment rSF page 91
in COnF/FULL/FLt-menu).
Code Name Possible causes Remedy
CrF1 Precharge • Charging relay control fault or
charging resistor damaged
• 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
InFI Unknown drive rating • The power card is different from
the card stored
• Contact your local Schneider Electric
representative
InF2 Unknown or incompatible power
board
• The power card is incompatible
with the control card
• Contact your local Schneider Electric
representative
InF3 Internal serial link • Communication interruption
between the internal cards
• Contact your local Schneider Electric
representative
InF4 Invalid industrialization zone • Inconsistent internal data • Contact your local Schneider Electric
representative
InF9 Current measurement circuit • Current measurement is not
correct due to hardware circuit
• Contact your local Schneider Electric
representative
---- Problem of application Firmware • Invalid application firmware
update using the Multi-Loader tool
• Flash again the application firmware of the
product
InFb Internal thermal sensor detected
fault
• The drive temperature sensor is
not operating correctly
• The drive is in short circuit or open
• Contact your local Schneider Electric
representative
InFE Internal CPU • Internal microprocessor • Turn the drive off and then back on again
• Contact local Schneider Electric
representative