VLT
®
FCM Series
■
List of warnings and alarms
The table gives the different warningsand alarmsand
indicates whether the fault locks the FC motor. After
Trip locked, the mains supply must be cut and the
fault must be corrected. Reconnect the mains supply
and reset the FC motor before being ready. Wherever
a cross is placed under both Warning and
Alarm, this can mean that a warning precedes the
alarm. It can also mean that it is possible to program
whether a given fault is to result in a warning or an
alarm. After a trip, alarm and warning will flash, but if
the fault is removed, only alarm will flash. After a reset,
the FC motor will be ready to start operation again.
No.
Description
Warning
Trip Alarm
Trip locked
2
Live zero fault (LIVE ZERO ERROR)
X
X
4
Phase loss (MAINS PHASE LOSS)
X
X
X
5
Voltage warning high (DC LINK VOLTAGE HIGH)
X
6
Voltage warning low (DC LINK VOLTAGE LOW)
X
7
Overvoltage (DC LINK OVERVOLT)
X
X
8
Undervoltage (DC LINK UNDERVOLT)
X
9
Inverter overload (INVERTER TIME)
X
X
11
Motor thermistor (MOTOR THERMISTOR)
X
12
Torque limit (TORQUE LIMIT)
X
13
Overcurrent (OVERCURRENT)
X
X
14
Earth fault (EARTH FAULT)
X
X
15
Supply fault (SWITCH MODE FAULT)
X
X
16
Short-circuit (CURR.SHORT CIRCUIT)
X
X
17
Standard bus timeout (STD BUS TIMEOUT)
X
X
18
HPFB bus timeout (HPFB TIMEOUT)
X
X
33
Out of frequency range (OUT FREQ RNG/ROT LIM)
X
34
HPFB error (HPFB ALARM)
X
X
35
Inrush fault (INRUSH FAULT)
X
X
36
Overtemperature (OVERTEMPERATURE)
X
X
37
Internal error (INTERNAL ERROR)
X
X
■
What if the motor does not start?
The LCP may be set for local stop. If so, the motor
does not start when you disconnect the LCP. To make
the motor start a LCP has to be connected, - there
is no other way, and the VLT Dialog Software will not
tell you what is wrong og what to do. So in case of
problems follow the procedure stated below:
Warning:
Extreme care must be taken when operating
the unit with open lid.
Green
Yellow
Red
Action
LED 302
LED 301
LED 300
OFF
OFF
OFF
Apply power
ON
OFF
OFF
Apply start and reference signals , (see drawing on page 17)
ON
OFF
ON
Apply and remove reset signal according to the drawing on page 17.
ON
ON
ON
Switch off power until all LED
’
s have turned off
For further information see the quick setup MG.03.Fx.xx.
1. Make sure no parameters have been changed from
initial delivery status (factory setting). Use the Local
Control Panel or serial port to reset to factory setting.
Make sure that parameter 002 is set for remote (if
not, the yellow LED 301 will be flashing slowly.
2. Make sure no STOP command has been
made via the optional control panel keyboard
(local stop, yellow LED 301 flashing slowly *),
Control panel STOP can only be restarted by
the Control Panel START button.
3. Check the Light Emitting Diodes visible through
a hole in the inside isolation cover (see drawing
page 16) follow table below.
*) as from software version 2.12
Serial communication problems If the bus address is
set for a high value, communication may seem to be
impossible, if the high address is not scanned by the
master. The address is not changed back to factory
setting with reset to factory setting function.
MG.03.H3.02 - VLT is a registered Danfoss trademark
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