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.
NOTE
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 Table 7.1).
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. 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 14-20 Reset Mode.
WARNING
Automatic wake-up is possible.
When a warning and alarm are marked against a code in
Table
7.1, 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: 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)
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
14 Earth Fault X X X
15 Hardware mismatch X X
16 Short Circuit X X
17 Control word time-out (X) (X)
8-04 Control Word Timeout Function
22 Hoist Mech. Brake (X) (X) Parameter group 2-2*
23 Internal Fan Fault X
25 Brake resistor short-circuited X
26 Brake resistor power limit (X) (X)
2-13 Brake Power Monitoring
Troubleshooting
VLT
®
Decentral Drive FCD 302 Operating Instructions
MG04F302 - VLT
®
is a registered Danfoss trademark
67
7 7
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
To Next Page
Loading...
Need help?
General
