Installation manual

Diagnostics and Troubleshooting
294 S1A28692 03/2010
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, set
[Output Phase Loss] (OPL) to [Output cut] (OAC), page
238
.
• 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), see instructions
given page 238
.
• Check and optimize the following parameters:
[IR compensation] (UFr ) page 78
, [Rated motor volt.]
(UnS) and [Rated mot. current] (nCr) page 74
and
perform [Auto tuning] (tUn) page 75
.
OSF
[Mains overvoltage]
• Line voltage too high.
• Disturbed mains supply.
• Check the line voltage.
OtFL
[LI6=PTC overheat]
• Overheating of PTC probes detected
on input LI6.
• Check the motor load and motor size.
• Check the motor ventilation.
• Wait for the motor to cool before restarting.
• Check the type and state of the PTC probes.
PtFL
[LI6=PTC probe]
• PTC probe on input LI6 open or
short-circuited.
• Check the PTC probe and the wiring between it and the
motor/drive.
SCF4
[IGBT short circuit]
• Power component detected fault. • Contact Schneider Electric Product Support.
SCF5
[Motor short circuit]
• Short-circuit at drive output. • Check the cables connecting the drive to the motor, and the
motor’s insulation.
• Contact Schneider Electric Product Support.
SLF1
[Modbus com.]
• Communication interruption on the
Modbus bus.
• Check the communication bus.
• Check the time-out.
• Refer to the Modbus User's manual.
SLF2
[PC com.]
• Communication interruption with PC
Software.
• Check the PC Software connecting cable.
• Check the time-out.
SLF3
[HMI com.]
• Communication interruption with the
graphic display terminal or remote
display terminal.
• Check the terminal connection
• Check the time-out.
SSF
[Torque/current lim]
• Switch to torque or current limitation. • Check if there are any mechanical problems.
• Check the parameters of [TORQUE LIMITATION] (tOL-)
page 202
and the parameters of the
[TORQUE OR I LIM. DETECT.] (tId-), page 245
.
tJF
[IGBT overheat]
• Drive overheated. • Check the size of the load/motor/drive.
• Reduce the switching frequency.
• Wait for the motor to cool before restarting.
ULF
[Proc. underload Flt]
• Process underload. • Check and remove the cause of the underload.
• Check the parameters of the
[PROCESS UNDERLOAD] (Uld-) function, page 251
.
Detected Fault Name Probable cause Remedy
Courtesy of Steven Engineering, Inc.-230 Ryan Way, South San Francisco, CA 94080-6370-Main Office: [phone]-Outside Local Area: [phone]-www.stevenengineering.com