Warnings And Alarms; System Monitoring; Warning And Alarm Types; Warning And Alarm Displays - GE AF-650 GP Design And Installation Manual

Warnings and Alarms

10 Warnings and Alarms

10.1 System Monitoring

The frequency converter monitors the condition of its
input power, output, and motor factors, and other system
performance indicators. A warning or alarm does not
necessarily indicate a problem internally in the frequency
converter.
Often, it indicates failure conditions from:
•
Input voltage.
•
Motor load.
•
Motor temperature.
•
External signals.
•
Other areas monitored by internal logic.
Investigate as indicated in the alarm or warning.

10.2 Warning and Alarm Types

Warnings
A warning is issued when an alarm condition is impending
or when an abnormal operating condition is present and
may result in the frequency converter issuing an alarm. A
warning clears by itself when the abnormal condition is
removed.
Alarms
Trip
0 10
An alarm is issued when the frequency converter is
tripped, that is, the frequency converter suspends
operation to prevent frequency converter or system
damage. The motor will coast to a stop. The frequency
converter logic continues to operate and monitor the
frequency converter status. After the fault condition is
remedied, the frequency converter can be reset. It is then
ready to start operation again.
A trip can be reset in any of 4 ways:
•
Press [Reset] on the keypad
•
Digital reset input command
•
Serial communication reset input command
•
Auto reset
Trip lock
An alarm that causes the frequency converter to trip lock
requires that input power is cycled. The motor will coast to
a stop. The frequency converter logic continues to operate
and monitor the frequency converter status. Remove input
power to the frequency converter and correct the cause of
the fault, then restore power. This action puts the
frequency converter into a trip condition as described
above and may be reset in any of those 4 ways.
96

10.3 Warning and Alarm Displays

Illustration 10.1 Warning Display
An alarm or trip lock alarm flashes in the display along
with the alarm number.
Illustration 10.2 Alarm Display
In addition to the text and alarm code in the keypad, there
are 3 status indicator lights.
Illustration 10.3 Status Indicator Lights
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