Operating instructions
8.2.8. Extended Diagnosis
Using the extended diagnosis function, alarm and warning information can be received from the
frequency converter. The setting of par. 8-07
Diagnosis trigger
determines which frequency con-
verter events should trigger the extended diagnosis function.
When par. 8-07
Diagnosis trigger
is set to Disable [0], no extended diagnosis data are sent re-
gardless of whether they appear in the frequency converter.
When par. 8-07
Diagnosis trigger
is set to Alarms [1], extended diagnosis data are sent when one
or more alarms arrive in the alarm par. 16-90
Alarm word
or 9-53
Warning word
.
When par. 8-06 is set to Alarms/Warnings [2], extended diagnosis data are sent if one or more
alarms/warnings arrive in the alarm par. 16-90
Alarm word
or 9-53
Warning word
, or in the warn-
ing par. 16-92
Warning word
.
The extended diagnosis sequence is as follows: If an alarm or warning appears, the frequency
converter will indicate that to the master by sending a high priority message via the output data
telegram. This will cause the master to send a request for extended diagnosis information to the
frequency converter, to which the frequency converter will reply. When the alarm or warning
disappears, the frequency converter will again indicate that to the master, and on the following
request from the master, return a standard DP diagnosis frame (6 bytes).
The content of the extended diagnosis frame is as follows:
Byte
Bit no. Name
0 to 5 Standard DP Diagnosis data
6 PDU length
7 0-7 Status type =0x81
8 8-15 Slot = 0
9 16-23 Status Information
10 24-31 Frequency converter alarm word (par. 16-90)
11 32-39 Frequency converter alarm word (par. 16-90)
12 40-47 Frequency converter alarm word (par. 16-90)
13 48-55 Frequency converter alarm word (par. 16-90)
14 56-63 Reserved for future use
15 64-71 Reserved for future use
16 72-79 Reserved for future use
17 80-87 Reserved for future use
18 88-95 Frequency converter warning word (par. 16-92)
19 96-103 Frequency converter warning word (par. 16-92)
20 104-111 Frequency converter warning word (par. 16-92)
21 112-119 Frequency converter warning word (par. 16-92)
22 120-127 Reserved for future use
23 128-135 Reserved for future use
24 136-143 Reserved for future use
25 144-151 Reserved for future use
26 152-159 PROFIBUS warning word (par. 9-53)
27 160-167 PROFIBUS warning word (par. 9-53)
28 168-175 Reserved for future use
29 176-183 Reserved for future use
30 184-191 Reserved for future use
31 192-199 Reserved for future use
8. Troubleshooting VLT
®
Profibus
98
MG.33.C4.02 - VLT
®
is a registered Danfoss trademark
8