Troubleshooting; Warnings/Alarm Messages - Danfoss VLT AutomationDrive FC 300 Programming Manual

Troubleshooting

5 Troubleshooting

5.1.1 Warnings/Alarm Messages

A warning or an alarm is signalled by the relevant LED on
the front of the frequency converter and indicated by a
code on the display.
A warning remains active until its cause is no longer
5 5
present. Under certain circumstances, operation of the
motor may still be continued. Warning messages may be
critical, but are not necessarily so.
In the event of an alarm, the frequency converter trips.
Reset the alarm to resume operation once the cause has
been rectified.
Three ways to reset:
•
Press [Reset].
•
Via a digital input with the "Reset" function.
•
Via serial communication/optional fieldbus.
NOTE
After a manual reset pressing [Reset], press [Auto On] to
restart the motor.
No. Description
1 10 Volts low
2 Live zero error
3 No motor
4 Mains phase loss
5 DC link voltage high
6 DC link voltage low
7 DC over-voltage
8 DC under voltage
9 Inverter overloaded
10 Motor ETR over temperature
11 Motor thermistor over temperature
12 Torque limit
13 Over Current
14 Earth Fault
200
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VLT AutomationDrive Programming Guide
If an alarm cannot be reset, the reason may be that its
cause has not been rectified, or the alarm is trip-locked
(see also Table 5.1).
Alarms that are trip-locked offer additional protection,
meaning that the mains supply must be switched off
before the alarm can be reset. After being switched back
on, the frequency converter is no longer blocked and can
be reset as described above once the cause has been
rectified.
Alarms that are not trip-locked can also be reset using the
automatic reset function in 14-20 Reset Mode (Warning:
automatic wake-up is possible!)
If a warning or alarm is marked against a code in Table 5.1,
this means that either a warning occurs before an alarm,
or else that it is possible to specify whether a warning or
an alarm should be displayed for a given fault.
This is possible, for instance, in 1-90 Motor Thermal
Protection. After an alarm or trip, the motor carries on
coasting, and the alarm and warning flash. Once the
problem has been rectified, only the alarm continues
flashing until the frequency converter is reset.
NOTE
No missing motor phase detection (numbers 30-32) and no
stall detection is active when 1-10 Motor Construction is set
to [1] PM non salient SPM.
Warning Alarm/Trip
X
(X)
(X)
(X)
X
X
X
X
X
(X)
(X)
X
X
X
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Alarm/Trip Lock
(X)
(X) (X)
X
X
X
(X)
(X)
X
X X
X
Parameter
Reference
6-01 Live Zero Timeout
Function
1-80 Function at Stop
14-12 Function at
Mains Imbalance
1-90 Motor Thermal
Protection
1-90 Motor Thermal
Protection