6.4 Warning and Alarm Types
Warning/
alarm type
Description
Warning
A warning indicates an abnormal operating
condition that leads to an alarm. A warning stops
when the abnormal condition is removed.
Alarm
An alarm indicates a fault that requires
immediate attention. The fault always triggers a
trip or trip lock. Reset the drive after an alarm.
Reset the drive in any of 4 ways:
•
Press [Reset]/[Off/Reset].
•
Digital reset input command.
•
Serial communication reset input command.
•
Auto reset.
Trip
When tripping, the drive suspends operation to prevent
damage to the drive and other equipment. When a trip
occurs, the motor coasts to a stop. The drive logic
continues to operate and monitor the drive status. After
the fault condition is remedied, the drive is ready for a
reset.
Trip lock
When trip locking, the drive suspends operation to prevent
damage to the drive and other equipment. When a trip
lock occurs, the motor coasts to a stop. The drive logic
continues to operate and monitor the drive status. The
drive starts a trip lock only when serious faults occur that
can damage the drive or other equipment. After the faults
are fixed, cycle the input power before resetting the drive.
Warning and alarm displays
•
A warning is displayed in the LCP along with the
warning number.
•
An alarm flashes along with the alarm number.
130BP086.12
Status
0.0Hz 0.000kW 0.00A
0.0Hz
0
Earth Fault [A14]
Auto Remote Trip
1(1)
Illustration 6.2 Alarm Display Example
In addition to the text and alarm code in the LCP, there are
3 status indicator lights.
Back
Can
cel
In
fo
OK
On
Alarm
Warn.
130BB467.11
System status Warning indicator
light
Alarm indicator light
Warning
On
Off
Alarm
Off
On (flashing)
Trip lock
On
On (flashing)
Illustration 6.3 Status Indicator Lights
6.5 List of Warnings and Alarms
6.5.1 Warnings/Alarm Messages
A warning or an alarm is signalled by the relevant indicator
light 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 trips.
Reset the alarm to resume operation once the cause has
been rectified.
3 ways to reset:
•
Press [Reset].
•
Via a digital input with the reset function.
•
Via serial communication/optional fieldbus.
NOTICE
After a manual reset pressing [Reset], press [Auto On] 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 extra protection, meaning
that the mains supply must be switched off before the
alarm can be reset. After being switched back on, the
Maintenance, Diagnostics, a...
VLT
®
Parallel Drive Modules
34
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MG37L202
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