Danfoss VLT AutomationDrive FC 302, Руководство по эксплуатации, Страница: 107 / 122

6 Warnings and Alarms
6.1 Status Messages
6.1.1 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.
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.
An alarm trips the frequency converter. Reset alarms to
restart operation once their cause has been rectified.
This may be done in three ways
•
By pressing [Reset].
•
Via a digital input with the “Reset” function.
•
Via serial communication/optional fieldbus.
NOTICE
After a manual reset pressing [Reset], [Auto On] must be
pressed to restart the motor.
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 6.1 ).
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 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
Table 6.1 , this means that either a warning occurs before
an alarm, or else that it is possible to specify 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. Once the
problem has been rectified, only the alarm continues
flashing until the frequency converter is reset.
NOTICE
No missing motor phase detection (no 30-32) and no
stall detection is active when
1-10 Motor Construction is
set to [1] PM non salient SPM .
No. Description Warning Alarm/Trip Alarm/Trip Lock Parameter
Reference
1 10 Volts low X
2 Live zero error (X) (X) 6-01 Live Zero Timeout
Function
3 No motor (X) 1-80 Function at Stop
4 Mains phase loss (X) (X) (X) 14-12 Function at
Mains Imbalance
5 DC link voltage high X
6 DC link voltage low X
7 DC over-voltage X X
8 DC under voltage X X
9 Inverter overloaded X X
10 Motor ETR over temperature (X) (X) 1-90 Motor Thermal
Protection
11 Motor thermistor over temperature (X) (X) 1-90 Motor Thermal
Protection
12 Torque limit X X
13 Over Current X X X
Warnings and Alarms
VLT
®
Automation Drive FC 300 Operating Instructions
MG33U402 - Rev. 2013-12-16 105
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