358 Fault tracing
If the overvoltage fault
appears during
deceleration, possible
causes are:
• Overvoltage controller
disabled.
• Deceleration time is
too short.
• Faulty or undersized
braking chopper.
• Check that overvoltage controller is
on (parameter 2005 OVERVOLT
CTRL).
• Check deceleration time (2203,
2206).
• Check brake chopper and resistor
(if used). DC overvoltage control
must be deactivated when brake
chopper and resistor is used
(parameter 2005 OVERVOLT
CTRL). Retrofit drive with brake
chopper and brake resistor.
0003 DEV OVERTEMP
(4210)
0305 bit 2
Drive IGBT temperature
is excessive. The fault
trip limit depends on the
drive type and size.
Ambient temperature is
too high.
Check ambient conditions. See also
section Derating on page 376.
Airflow through the
inverter is not free.
Check air flow and free space above
and below the drive (see section Free
space around the drive on page 34).
Fan is not working
properly
Check fan operation.
Overloading of the drive. 50% overload is allowed for one
minute in ten minutes. If higher
switching frequency (parameter 2606)
is used, follow the Derating rules on
page 376.
0004 SHORT CIRC
(2340)
0305 bit 3
Short-circuit in motor
cable(s) or motor.
Damaged motor or motor
cable.
Check motor and cable insulation.
Check motor winding
Internal fault of the drive.
Drive gives an
overcurrent fault after
start command even
when the motor is not
connected (use scalar
control in this trial).
Replace the drive.
High frequency noise in
STO lines.
Check the STO cabling and remove
the noise sources nearby.
0006 DC UNDERVOLT
(3220)
0305 bit 5
Intermediate circuit DC
voltage is not sufficient.
Check input power supply and fuses.
Undervoltage controller
disabled.
Check that undervoltage controller is
on (parameter 2006 UNDERVOLT
CTRL).
CODE FAULT CAUSE WHAT TO DO
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