Fault
code
Fault ID
Fault name
Possible cause
How to correct the fault
9
80
Undervoltage (fault)
The DC-link voltage is lower
than the limits.
•
too low a supply volt-
age
•
defective component
•
a defective input fuse
•
the external charge
switch is not closed
NOTE!
This fault becomes active
only if the drive is in Run
state.
If there is a temporary supply volt-
age break, reset the fault and
restart the drive.
Do a check of the supply voltage. If
the supply voltage is sufficient,
there is an internal fault.
Examine the electrical network for
fault.
Ask instructions from the distribu-
tor near to you.
10
91
Input phase
•
supply voltage mal-
function
•
a defective fuse or mal-
function in the supply
cables
The load must be a mini-
mum of 10-20% for the
supervision to work.
Do a check of the supply voltage,
the fuses and supply cable, the
rectifying bridge and the gate con-
trol of the thyristor (MR6->).
11
100
Output phase super-
vision
The measurement of cur-
rent tells that there is no
current in 1 motor phase.
•
a motor or motor
cables malfunction
•
filter (du/dt, sinus)
malfunction
Do a check of the motor cable and
the motor.
Do a check of the du/dt or sinus fil-
ter.
12
110
Brake chopper super-
vision (hardware
fault)
There is no brake resistor.
The brake resistor is bro-
ken. A defective brake chop-
per.
Do a check of the brake resistor
and the cabling.
If they are in good condition, there
is a fault in the resistor or the
chopper. Ask instructions from the
distributor near to you.
111
Brake chopper satu-
ration alarm
13
120
AC drive undertem-
perature (fault)
Too low a temperature in
the heatsink of the power
unit or in the power board.
The ambient temperature is too
low for the drive. Move the drive in
a warmer position.
VACON · 340
FAULT TRACING
11
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