Troubleshooting; Status Messages; Warnings/Alarm Messages - Danfoss VLT AutomationDrive FC 302 Programming Manual

Troubleshooting

5 Troubleshooting

5.1 Status Messages

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.
5 5
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 trips.
Reset the alarm to resume operation once the cause has
been rectified.
3 ways to reset:
•
Press [Reset].
•
Via a digital input with the "Reset" function.
•
Via serial communication/optional fieldbus.
NOTICE
After a manual reset pressing [Reset], press [Auto On] to
restart the motor.
Num Description
ber
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 overvoltage
8 DC undervoltage
9 Inverter overloaded
10 Motor ETR overtemperature
11 Motor thermistor overtemperature
12 Torque limit
13 Over current
14 Earth fault
212
®
VLT AutomationDrive FC 301/302
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 it is possible to specify whether 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. Once the
problem has been rectified, only the alarm continues
flashing until the frequency converter is reset.
NOTICE
No missing motor phase detection (numbers 30-32) and
no stall detection are 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
(X) (X)
(X) (X)
X X
X X
X X
Danfoss A/S © Rev. 10/2014 All rights reserved.
Alarm/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
MG33MJ02