Diagnostics And Troubleshooting; Alarms And Warnings Overview - Danfoss VLT DriveMotor FCP 106 Programming Manual

Diagnostics and Troubleshoo...

5 Diagnostics and Troubleshooting

5.1 Alarms and Warnings Overview

The LEDs on the front of the frequency converter signal a
warning or an alarm, which is then indicated by a code on
the display.
Event type
Warning
Alarm
Table 5.1 Event Type LED Signals
A warning remains active until its cause is no longer
present. Under certain circumstances, motor operation can
continue. Warning messages can be critical, but are not
necessarily so.
If an alarm occurs, the frequency converter trips. Reset of
alarms is required to restart operation, once the cause is
rectified.
To reset an alarm:
•
Press [Reset].
•
Use the reset function via a digital input.
•
Reset via serial communication.
•
Use the auto reset function, which is a default
setting. See parameter 14-20 Reset Mode. This
form of reset cannot be used for a trip lock alarm.
NOTICE
To restart the motor after reset pressing [Reset], press
[Auto On] or [Hand On].
When an alarm fails to reset, check:
•
That the cause is rectified.
•
For trip lock, refer to Table 5.2.
Trip
A trip is the action occurring when an alarm has appeared.
The event that caused an alarm cannot damage the
frequency converter or cause dangerous conditions.
The trip coasts the motor and can be reset by pressing
[Reset] or via a digital input (parameter group 5-1* Digital
Inputs [1] Reset). For alarms with trip, but no trip lock, reset
using the automatic reset function in parameter 14-20 Reset
Mode.
Trip lock
A trip lock alarm occurs in situations, which can result in
equipment damage. A trip lock alarm offers more
protection, because the mains supply must be switched off
before the alarm can be reset. After rectification of the
MG03N202
Programming Guide
cause and after power cycling, the frequency converter is
no longer blocked. Reset as described in the previous.
UNINTENDED START
Automatic wake-up can occur when using reset via
parameter 14-20 Reset Mode. Failure to be prepared for
LED signal
start can result in personal injury.
Yellow
Flashing red
Warning and alarm
For events marked with warning and alarm in Table 5.2:
Example: Parameter 1-90 Motor Thermal Protection.
If this parameter is set to warning options after an alarm,
the motor coasts, and both the alarm and warning LEDs
flash. Once the cause is rectified, only the alarm LED
continues flashing. If this parameter is set to trip options
after an alarm or trip, the motor coasts and the warning
LED stops flashing when the alarm LED starts flashing.
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CAUTION
•
Be prepared for unexpected start.
•
A warning occurs before an alarm.
•
The event can be set to signal either warning or
alarm.
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