9 Troubleshooting
A warning or an alarm is signaled by the relevant LED on
the front of the filter and indicated by a code on the
display.
A warning remains active until its cause is no longer
present. Under certain circumstances operation may still be
continued. Warning messages are not critical for the filter
operation and is often an indication that the filter has
reached it maximum current capability. Even if filter
compensation current is low, some higher order corrected
harmonics might have reached the filter maximum
capability resulting in a overload warning. Only critical
warnings will, if not automatically resolved, generate an
alarm.
In the event of an alarm, the active filter will have tripped.
Alarms must be reset to restart operation once their cause
has been rectified.
This may be done in four ways:
1.
By using the [RESET] control button on the LCP.
2.
Via a digital input with the “Reset” function.
3.
Via serial communication/optional Serial
communication bus.
4.
By resetting automatically using the [Auto Reset]
function. See
14-20 Reset Mode
in
NOTE!
After a manual reset using the [RESET] button on the LCP,
the [AUTO ON] or [HAND ON] button must be pressed to
restart the unit.
If an alarm cannot be reset, the reason may be that its
cause has not been rectified, or the alarm is trip-locked
(see
).
Alarms that are trip-locked offer additional protection,
means that the line power supply must be switched off
before the alarm can be reset. After being switched back
on, the device is no longer blocked and may 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 and alarm is marked against a code in the
table on the following page, this means that either a
warning occurs before an alarm, or it can be specified
whether it is a warning or an alarm that is to be displayed
for a given fault.
No.
Description
Warning
Alarm/Trip
Alarm/Trip Lock
Parameter Reference
1
10 Volts low
X
2
Live zero error
(X)
(X)
6-01
4
Line phase loss
X
5
DC link voltage high
X
6
DC link voltage low
X
7
DC overvoltage
X
X
8
DC undervoltage
X
X
13
Overcurrent
X
X
X
14
Ground fault
X
X
X
15
Hardware mismatch
X
X
16
Short Circuit
X
X
17
Control word timeout
(X)
(X)
8-04
23
Internal Fan Fault
X
24
External Fan Fault
X
14-53
29
Heatsink temp
X
X
X
33
Inrush fault
X
X
34
Serial communication bus fault
X
X
35
Option fault
X
X
38
Internal fault
Troubleshooting
VLT Active Filter AAF 00x
MG.90.V2.22 - VLT
®
is a registered Danfoss trademark
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