Danfoss FCM305 56 Instruction Manual page 107

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:
NO MOTOR
WARN. 3
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 FCM 300.
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 FCM 300 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 FCM 300 is still active.
Trip/Alarm/warning limits:
FCM 300 Series
Undervoltage
Voltage warning low
Voltage warning high
Overvoltage
* 760V in 5 sec. or 800V immediately.
The voltages stated are the intermediate circuit voltage of the FCM 300.
MG.03.B6.2G - VLT is a registered Danfoss trademark
SETUP
1
3 x 380 - 480 V
[VDC]
FCM 300 Series
Alarm messages
The alarm comes up in the 2. and 3. line of the
display, see example below:
TRIP (RESET)
ALARM:12
TORQUE LIMIT
ALARM 7
Overvoltage (DC LINK OVERVOLT):
If the intermediate circuit voltage (DC) exceeds the
inverter overvoltage limit (see table), the FCM 300
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 FCM 300 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 FCM 300, see technical data.
WARNING/ALARM 9
Inverter overload (INVERTER TIME):
The electronic, thermal inverter protection reports
that the FCM 300 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 FCM 300 cannot be reset until the
counter is below 90%.
410
440
760
760*
SETUP
1
16-3