8 Warnings and Alarms
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 four ways:
1.
By using the [RESET] control button on the
keypad.
2.
Via a digital input with the “Reset” function.
3.
Via serial communication/optional network.
4.
By resetting automatically using the [Auto Reset]
function, which is a default setting for AF-600 FP
Drive, see
H-04 Auto-Reset (Times)
in the AF-600
FP Programming Guide
NOTE
After a manual reset using the [RESET] button on the
keypad, the [AUTO] or [HAND] button 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 8.1
).
CAUTION
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
H-04 Auto-Reset (Times)
(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
F-10 Electronic Overload
.
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.
Warnings and Alarms
AF-600 FP High Power Operating Instructions
125
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