GE Industrial Solutions AF-650 GP PROFINET - Manual (Page 64)

10.1.6 Warning and Alarm Messages
There is a clear distinction between alarms and warnings.
When there is an alarm, the frequency converter will enter
a fault condition. After the cause for the alarm has been
cleared, the master will have to acknowledge the alarm
message before the frequency converter can start
operating again. A warning, on the other hand, may come
when a warning condition appears, then disappear when
conditions return to normal, without interfering with the
process.
Warnings
Warnings within the frequency converter are represented
by a single bit within a warning word. Bit status FALSE [0]
means no warning, while bit status TRUE [1] means
warning. Any bit change in the warning word will be
notified by a change of bit 7 in the status word.
Alarms
Following an alarm message the frequency converter will
enter Fault condition. Only after the fault has been
alleviated and the controller has acknowledged the alarm
message by setting bit 7 in the control word, the
frequency converter will resume operation. Alarms within
the frequency converter are represented by a single bit
within an alarm word. Bit status FALSE [0] means no fault,
while bit status TRUE [1] means fault.
Troubleshooting PROFINET Operating Instruction
63
10 10