
VLT
®
FCM Series
All about FCM
300
■
Warnings
The display flashes between normal state and warning.
A warning comes up on the first and second line
of the display. See examples below:
175NA1
17.10
SETUP
1
WARN.
6
DC LINK VOLTAGE LOW
Alarm messages
The alarm comes up in the 2. and 3. line of
the display, see example below:
175NA1
18.10
SETUP
1
ALARM:12
TRIP (RESET)
TORQUE LIMIT
SETUP
1
WARNING/ALARM 2
Live zero fault (LIVE ZERO ERROR):
The current signal on terminal 1 is less than 50% of the
value set in parameter 336
Terminal 1, min. scaling
.
WARNING/ALARM 4
Phase loss (MAINS PHASE LOSS):
Phase missing on the supply side. Check the
supply voltage to the FC motor.
WARNING 5
Voltage warning high (DC LINK VOLTAGE HIGH):
The intermediate circuit voltage (DC) is higher than
the overvoltage limit of the control system, see table
on this page. The FC motor is still active.
WARNING 6
Voltage warning low (DC LINK VOLTAGE LOW):
The intermediate circuit voltage (DC) is below the
undervoltage limit of the control system, see table
below. The FC motor is still active.
ALARM 7
Overvoltage (DC LINK OVERVOLT):
If the intermediate circuit voltage (DC) exceeds
the inverter overvoltage limit (see table), the
FC motor will trip. Furthermore, the voltage
will be stated in the display.
ALARM 8
Undervoltage (DC LINK UNDERVOLT):
If the intermediate circuit voltage (DC) drops below the
inverter lower voltage limit (see table on this page),
the FC motor will trip after 3 - 28 sec., depending
on unit. Furthermore, the voltage will be stated
in the display. Check whether the supply voltage
matches the FC motor, see technical data.
WARNING/ALARM 9
Inverter overload (INVERTER TIME):
The electronic, thermal inverter protection reports
that the FC motor is about to cut out because of an
overload (too high current for too long). The counter for
electronic, thermal inverter protection gives a warning at
95% and trips at 100%, while giving an alarm. The FC
motor cannot be reset until the counter is below 90%.
Trip/Alarm/warning limits:
FC motor Series
3 x 380 -
480 V
[VDC]
Undervoltage
410
Voltage warning low
440
Voltage warning high
760
Overvoltage
760*
* 760V in 5 sec. or 800V immediately.
The voltages stated are the
intermediate circuit voltage of the
FC motor.
ALARM 11
Motor thermistor (MOTOR THERMISTOR):
If a thermistor is mounted and parameter 128 is set to
Enable
[1], the FC motor will trip if the motor gets too hot.
WARNING 12
Current limit (CURRENT LIMIT):
The current is higher than the value in parameter
221 (in motor operation).
ALARM 13
Overcurrent (OVERCURRENT):
The inverter peak current limit (approx. 230% of
the rated current) has been exceeded. The FC
motor will trip, while giving an alarm.
MG.03.H3.02 - VLT is a registered Danfoss trademark
95