Download Altivar 71 - Steven Engineering

ATV71-simpl.book Page 50 Jeudi, 20. janvier 2005 10:38 10
Faults that can be reset with the automatic restart function, after the cause
has disappeared (continued)
ENGLISH
These faults can also be reset by turning the drive off then on again or by means of a logic input or command bit
(consult the CD-ROM supplied with the drive).
Fault
Name
Probable cause
Remedy
OPF2
[3 MOTOR PHASE
LOSS]
• Motor not connected or
motor power too low.
• Output contactor open.
• Instantaneous instability
in the motor current.
PtF1
[MAINS
OVERVOLTAGE]
[PTC 1
OVERHEAT]
[PTC 2
OVERHEAT]
[PTC=LI6
OVERHEAT]
[PTC1 FAILURE]
PtF2
[PTC2 FAILURE]
PtFL
[PTC=LI6 FAILURE]
SCF4
[IGBT SHORT
CIRCUIT]
[LOAD SHORT
CIRCUIT]
• Line voltage too high.
• Disrupted line supply.
• Overheating of PTC1
probes detected.
• Overheating of PTC2
probes detected.
• Overheating of PTC/LI6
probes detected.
• PTC1 probes open or
short-circuited.
• PTC2 probes open or
short-circuited.
• PTC/LI6 probes open or
short-circuited.
• Power component fault.
• Check the connections from the drive to the
motor.
• If an output contactor is being used, consult
the CD-ROM supplied with the drive.
• 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) (consult the CD-ROM supplied with
the drive).
• Check and optimize the following
parameters: [Rated motor volt.] (UnS) and
[Rated mot. current] (nCr) and perform
[Auto-tuning] (tUn).
• Check the line voltage.
OSF
OtF1
OtF2
OtFL
SCF5
SLF1
50
[MODBUS COMS
FAULT]
• Short-circuit at drive
output.
• Interruption in
communication on the
Modbus bus.
•
•
•
•
Check the motor load and dimensions.
Check the motor ventilation.
Wait for the motor to cool before restarting.
Check the type and state of the PTC probes.
• Check the PTC probes and the wiring
between them and the motor/drive.
• Inspect/repair the drive.
• Check the cables connecting the drive to the
motor, and the motor’s insulation.
• Inspect/repair the drive.
• Check the communication bus.
• Check the time-out.
• Refer to the Modbus User’s Manual.