FCM 300 / FCD 300 / VLT
®
2800 / DP V1 PROFIBUS
Warnings and alarm
messages
■ Warning and alarm messages
There is a clear distinction between alarms and
warnings. In the case of an alarm, the FCM 300/FCD
300/VLT 2800 will enter a fault condition. After the
cause for the alarm has been cleared, the master will
have to acknowledge the alarm message for the FCM
300/FCD 300/VLT 2800 to start operating again. A
warning, on the other hand may come when a war n ing
condition appears, and disappear when conditions
return to normal without interfering with the process.
Warnings
Any w arning within the FCM 300/FCD 300/VLT
2800 is represented by a single bit within a war ning
word. A warning word is always an ac tive parameter.
Bit status FALSE [0] means no warning, while bit
status TRUE [1] means warning.
Any bit change in the war ning word will result in a
Spontaneous message being issued.
In addition to the warning word message the
master will also be notified through a change
of bit 7 in the Status Word.
Alarms
Following an Alarm message the F CM 300/FCD
300/VLT 2800 will enter Fault condition. Only
after the fault has been allevia ted and the master
has acknowledged the alarm message by setting
bit 7 in the Control word, can the FCM 300/FCD
300/VLT 2800 resume operation.
Any alarm within the FCM 300/FCD 300/VLT
2800 is represented by a single bit within an
alarm word. An alarm word is always an action
parameter. Bit status FALSE [0] means no fault,
while bit status TRUE [1] means fault.
Any bit c hange in the alarm word wil l result in a
Spontaneous message being issued.
■ Spontaneous messages
If a fault or warning condition should occur, the
FCM 300/FCD 300/VLT 2800 will, if the proper
communicative relationship has been established, issue
a Spontaneous message to communication partners.
Instead of responding to the master’s request, the FCM
300/FCD 300/VLT 2800 will exchange the requested
response with the alarm or the war n ing mes sage.
Warnings and alarms will trigger a Spontaneous
message. The same is true with any change
to an active parameter.
■ Warning word, extended Status word and
Alarm word
Warning word, extened status word and alarm word
are shown on the display in Hex format. If there are
more than one warning or alarm, a sum of all warnings
or alarms w ill be shown. Warning word, extened status
word and alarm word can also be displa yed using the
serial bus in parameter 540, 541 and 538.
Bit (Hex) Alarm word (p. 538)
00000002 Trip lock
00000004 AMT tuning fail
00000040 HPFB timeout
00000080 Standard bus timeout
00000100 Short circuit
00000200 24 V cupply fault
00000400 Earthe fault
00000800 Overcurrent
00002000 Motor thermistor
00004000 Motor overload
00008000 Inverter overload
00010000 Undervoltage
00020000 Overvoltage
00040000 Phase loss
00800000 Live zero error
01000000 Heat sink temperature too high
02000000 Profibus communication fualt
08000000 Inrush fault
10000000 Internal fault
Bit (Hex) Alarm word (p. 540)
00000008 HPFB timeout
00000010 Standard bus timeout
00000040 Current limit
00000080 Motor thermistor
00000100 Motor overload
00000200 Inverter overload
00000400 Undervolt
00000800 Overvolt
00001000 Voltage war ning low
00002000 Voltage warning high
00004000 Phase loss
00010000 Live zero error warning
00400000 Out of frequency range
00800000 Profibus communication fault
40000000 Switch mode war ning
80000000 Heat sink temperature high
MG.90.A5.02 - VLT i s a registered Danfoss trademark
39
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