Troubleshooting - Danfoss VLT AQUA Drive FC 202 Operating Instructions Manual

Troubleshooting

8 Troubleshooting
8.1 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 will have
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] on the LCP.
2. Via a digital input with the "Reset" function.
3. Via serial communication/optional fieldbus.
4. By resetting automatically using the [Auto Reset]
function. See 14-20 Reset Mode inVLT
FC 202 Programming Guide
NOTICE
After a manual reset pressing [RESET] on the LCP, press
[AUTO ON] or [HAND ON] to restart the motor.
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
8 DC under voltage
9 Inverter overloaded
10 Motor ETR over temperature
11 Motor thermistor over temperature
12 Torque limit
13 Over Current
14 Earth fault
15 Hardware mismatch
16 Short Circuit
17 Control word timeout
23 Internal Fan Fault
24 External Fan Fault
25 Brake resistor short-circuited
26 Brake resistor power limit
27 Brake chopper short-circuited
MG20Y202
Operating Instructions
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 on following page).
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
AQUA Drive
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/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
X
X
(X) (X)
X
X
X
(X) (X)
X X
Danfoss A/S © Rev. 06/2014 All rights reserved.
Alarm/Trip Lock Parameter Reference
6-01
1-80
(X) 14-12
1-90
1-90
X
X
X
X
8-04
14-53
2-13
8 8
109