Troubleshooting; Status Messages - Danfoss VLT AQUA Drive FC 202 Design Manual

Troubleshooting

8 Troubleshooting

8.1 Status Messages

A warning or an alarm is signaled 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 can
continue. Warning messages are sometimes critical, but are not always so.
In case of an alarm, the frequency converter has tripped. Alarms must be reset to restart operation once their cause has
been rectified.
There are four ways to restart:
1. By pressing [Reset].
2. Via a digital input with the "Reset" function.
3. Via serial communication/optional fieldbus.
4.
By resetting automatically using the [Auto Reset] function, which is a default setting for VLT
8 8
Drive. See 14-20 Reset Mode in VLT
NOTE
After a manual reset pressing [Reset], [Auto On] or [Hand On] must be pressed to restart the motor.
If an alarm cannot be reset, the possible reason is that its cause has not been rectified, or the alarm is trip-locked (see also
Table 8.1).
Alarms that are trip-locked offer more 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 can be reset 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
NOTE
Automatic wake-up is possible!
If a warning and alarm are marked against a code in Table 8.1, 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 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.
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
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VLT AQUA Drive FC 202 Design Guide
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AQUA Drive FC 202 Programming Guide
Warning Alarm/Trip
X
(X) (X)
(X)
(X) (X)
X
X
X
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MG20Z102 - VLT is a registered Danfoss trademark
Alarm/Trip Lock
(X)
X
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AQUA Drive FC 202
Parameter Reference
6-01 Live Zero Timeout
Function
1-80 Function at Stop
14-12 Function at
Mains Imbalance