9
FAULT TRACING
9.1
FAULT CODES
Fault
code
Fault
Subcode in
T.14
Possible cause
How to correct the fault
1
Overcurrent
S1 = Hard-
ware trip
There is too high a current
(>4*I H) in the motor cable.
Its cause can be 1 of these.
•
a sudden heavy load
increase
•
a short circuit in the
motor cables
•
the motor is not the
correct type
Do a check of the loading. Do a
check of the motor. Do a check of
the cables and connections. Make
an identification run.
S2 =
Reserved
S3 = Cur-
rent con-
troller
supervision
2
Overvoltage
S1 = Hard-
ware trip
The DC-link voltage is
higher than the limits.
•
too short a decelera-
tion time
•
high overvoltage spikes
in the supply
•
Start/Stop sequence
too fast
Set the deceleration time longer.
Use the brake chopper or the brake
resistor. They are available as
options. Activate the overvoltage
controller. Do a check of the input
voltage.
S2 = Over-
voltage
control
supervision
3 *
Earth fault
The measurement of cur-
rent tells that the sum of the
motor phase current is not
zero.
•
an insulation malfunc-
tion in the cables or the
motor
Do a check of the motor cables and
the motor.
5
Charging switch
The charging switch is open,
when the START command
is given.
•
operation malfunction
•
defective component
Reset the fault and start the drive
again. If the fault shows again, ask
instructions from the distributor
near to you.
6
Emergency stop
Stop signal has been given
from the option board.
Do a check of the emergency stop
circuit.
VACON · 384
FAULT TRACING
9
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