Troubleshooting; Introduction To Alarms And Warnings - Danfoss VLT HVAC Basic Drive FC 101 Programming Manual

Troubleshooting

4 Troubleshooting

4.1 Introduction to Alarms and Warnings

A warning or alarm is signaled by the relevant indicator
light on the front of the frequency converter and indicated
by a code on the display.
4 4
A warning remains active until its cause is no longer
present. Under certain circumstances, operation of the
motor may still continue. Warning messages may be
critical, but are not necessarily so.
If an alarm occurs, the frequency converter has tripped.
Alarms must be reset to restart operation once their cause
has been rectified.
This may be done in 4 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, see parameter 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 overtemperature
11 Motor thermistor overtemperature
13 Overcurrent
14 Ground fault
16 Short circuit
17 Control word time-out
24 Fan fault (Only on 400 V 30–90kW)
30 Motor phase U missing
31 Motor phase V missing
98
®
VLT HVAC Basic Drive FC 101
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.
Alarms that are trip-locked offer extra protection. This
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 parameter 14-20 Reset Mode
(Warning: automatic wake-up is possible.)
If a warning and alarm are marked against a code in
Table 4.1, this means that either a warning occurs before
an alarm, or it can be specified if a warning or an alarm
should be displayed for a given fault.
This is possible, for instance, in parameter 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)
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Trip Lock Parameter Reference
– Parameter 6-01 Live Zero
Timeout Function
– Parameter 1-80 Function at
Stop
(X) Parameter 14-12 Function at
Mains Imbalance
– –
– –
– –
– Parameter 1-90 Motor Thermal
Protection
– Parameter 1-90 Motor Thermal
Protection
X –
X –
X –
– Parameter 8-04 Control
Timeout Function
– Parameter 14-53 Fan Monitor
(X) Parameter 4-58 Missing Motor
Phase Function
(X) Parameter 4-58 Missing Motor
Phase Function
MG18B502