FC 300 Instruction Manual
Warnings and Alarms
WARNING/ALARM 13
Overcurrent:
The inverter peak current limit (approx. 200%
of the rated current) is exceeded. The warning
will last approx. 8-12 sec., then the adjustable
frequency drive trips and issues an alarm. Turn
off the adjustable frequency drive and check if the
motor shaft can be turned and if the motor size
matches the adjustable frequency drive.
If extended mechanical brake control is selected,
the trip can be reset externally.
ALARM 14
Ground fault:
There is a discharge from the output phases to
ground, either in the cable between the adjustable
frequency drive and the motor or in the motor i tself.
Turn off the adjustable frequency drive and
remove the g round fault.
ALARM 15
Incomplete hardware:
A fitted option is not handled by the present
control board (hardware or software).
ALARM 16
Short-circuit:
There is short-circ uiting in the motor or
on the motor terminals.
Turn off the adjustable frequency drive and
remove the short-circuit.
WARNING/ALARM 17
Control word timeout:
There is no communication to the adjustable
frequency drive.
The warning will only be activated when par.
8-04 is NOT set to OFF.
If par. 8-04 is set to Stop and Trip,awarning
appears and the ad justable freq uency drive ramps
down until it trips, w hile giving an alarm.
par. 8-03 Control w ord Timeout Time could
possibly be increased.
WARNING 25
Brake resistor short-circuited:
The brake resistor is monitored during operation.
If
it short-circuits, the brake function is disconnected
and the warning a ppears. The adjustable frequency
drive still works, but without the brake fun
ction.
Turn off the adjustable frequency drive and replace
the brake resistor (see par. 2- 15 Brake Check).
ALARM/WARNING 26
Brake resistor power limit:
The power transmitted to the brake resistor is
calculated as a percentage, as a mean value over
the last 120 s , on the basis of the resis tance value of
the brake resistor (par. 2-11) and the int ermed iate
circuit voltage. The warning is active when the
dissipated braking energy is higher than 90%. If Trip
[2] has been selected in par. 2-13, the adjustable
frequency drive cuts out and issues this alarm, when
the dissipated braking energy is higher than 100%.
WARNING 27
Brake chopper fault:
The brake transistor is m onitored during operation
and if it short-circuits, the brake function
disconnects and the warning comes up. The
adjustable frequency drive is still able to run,
but since the brake transistor has short-circuited,
substantial power is transmitted to the brake
resistor, even if it is inactive.
Turn off the adjustable frequency drive and
remove the brake resistor.
Warning: There is a risk of substantial
power being transmitted to the brake
resistor if the b rake transistor
is short-circuited.
ALARM/WARNING 28
Brake check failed:
Brake resistor fault: the brake resistor is
not connected/working.
ALARM 29
Drive over temperature:
If the enclosure is IP 20 or IP 21/TYPE 1, the
cut-out tem perature of the h eats ink is 203
o
F
+
9
o
[95
o
C+5
o
C]. The temperature fault cannot
be reset until the te mp erature of the heatsink
is below 158
o
F+9
o
F[70
o
C+5
o
C].
The fault could b e:
- Ambient temperature too high
- Too long motor cable
ALARM 30
Motor phase U missing:
Motor phase U between the adjustable frequency
drive and the motor is m issing.
Turn off the adjustable frequency drive and
check motor phase U.
64
MG.33.A6.22 - VLT is a registered Danfoss trademark
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