Alarms And Warnings - Danfoss VLT HVAC Basic Drive FC 101 Programming Manual

Troubleshooting
4 Troubleshooting

4.1 Alarms and Warnings

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
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 has
tripped. Alarms must be reset to restart operation once
their cause has been rectified.
This may be done in four ways:
1. By pressing [Reset].
2. Via a digital input with the "Reset" function.
3. Via serial communication.
4. By resetting automatically using the [Auto Reset]
function, which is a default setting for VLT HVAC
Basic Drive, see 14-20 Reset Mode.
NOTICE
After a manual reset pressing [Reset], press [Auto
On] or [Hand On] to restart the motor.
No. Description
2 Live zero error
3 No motor
4 Mains phase loss
7 DC over voltage
8 DC under voltage
9 Inverter overloaded
10 Motor ETR over temperature
11 Motor thermistor over temperature
13 Over Current
14 Earth fault
16 Short Circuit
17 Control word timeout
24 Fan Fault (Only on 400V 30-90kW)
30 Motor phase U missing
31 Motor phase V missing
32 Motor phase W missing
38 Internal fault
44 Earth fault 2
47 Control Voltage Fault
48 VDD1 Supply Low
50 AMA Calibration Failed
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VLT HVAC Basic Drive FC 101 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 Table 4.1.
CAUTION
Alarms that are trip-locked offer additional protection,
means 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
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.
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 on the
frequency converter. Once the problem has been
rectified, only the alarm continues flashing.
Warning Alarm
(X) (X)
(X)
(X) (X)
X X
X X
X X
(X) (X)
(X) (X)
X X
X X
X
(X) (X)
X X
(X)
(X)
(X)
X
X
X
X
X
MG18B302 - Rev. 2013-09-02
Trip Lock Parameter Reference
6-01
1-80
(X) 14-12
1-90
1-90
X
X
X
8-04
14-53
(X) 4-58
(X) 4-58
(X) 4-58
X
X
X
X
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