7 Troubleshooting
7.1.1 Warnings/Alarm Messages
A warning or an alarm appears as an LED signal on the
front of the frequency converter, and is indicated by a
code on the display.
A warning remains active until its cause is no longer
present. Under certain circumstances, the motor can still
continue to operate. Warning messages can be critical, but
are not necessarily so.
If there is an alarm, the frequency converter trips. Alarms
must be reset to restart operation once their cause has
been rectified.
Perform the reset in one of three ways:
1.
By pressing [Reset] on the LCP.
2.
Via a digital input with the “Reset” function.
3.
Via serial communication/optional fieldbus.
NOTICE
After a manual reset pressing [Reset] on the LCP, [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
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. Reset the
frequency converter as described above, once the cause of
the alarm 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 RESTART
Automatic wake-up is possible after resetting the
frequency converter. This can cause the motor to be
started, possibly resulting in death or serious injury.
Make sure, that the motor working area is kept clear.
When a warning and alarm are marked against a code in
, this means that either a warning occurs before
an alarm, or else that the user can specify whether a given
fault will trigger a warning or an alarm.
Example:
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.
No. Description
Warning
Alarm/Trip
Alarm/Trip Lock
Parameter Reference
1
10 Volts low
X
2
Live zero error
(X)
(X)
Parameter 6-01 Live Zero Timeout Function
3
No motor
(X)
Parameter 1-80 Function at Stop
4
Mains phase loss
(X)
(X)
(X)
Parameter 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)
Parameter 1-90 Motor Thermal Protection
11
Motor thermistor over temperature
(X)
(X)
Parameter 1-90 Motor Thermal Protection
12
Torque limit
X
X
13
Over Current
X
X
X
14
Earth Fault
X
X
X
15
Hardware mismatch
X
X
16
Short Circuit
X
X
17
Control word time-out
(X)
(X)
Parameter 8-04 Control Timeout Function
Troubleshooting
Operating Guide
MG04F402
Danfoss A/S © 05/2016 All rights reserved.
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