4 Commissioning
4.12 Acyclic data
96
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01/22 MN040062EN
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4.12.5.2 Advanced diagnostics
When there is a collective diagnostic (input byte 0, bit 4 (DIAG)), the variable
frequency drive/variable speed starter will provide advanced diagnostic mes-
sages.
The following messages are generated by the variable frequency drive/varia-
ble speed starter.
Table 53:
Advanced diagnostic data
4.12.5.3 PROFIdrive diagnostics
The diagnostic data that corresponds to the PROFIdrive profile can be sent at
any time regardless of the profile chosen. They are made available via the
acyclic parameter channel.
The ERR or WARN bits indicate whether diagnostic messages (i.e. errors or
warnings) are present.
Error acknowledgment
You can acknowledge faults (ERR) as follows:
FaultAck = 1.
Warnings (WARN) cannot be acknowledged, since they are simply messages
without an ensuing response (the variable frequency drives/variable speed
starters).
Available diagnostic messages (PNU 860.0 warnings and PNU 944 to
PNU 952 errors).
Value
[hex]
Meaning
Corrective action
Note
19
There is a warning at
hand on the variable
frequency drive/variable
speed starter.
Read warning PNU 860.0 and fix
the cause
Corresponds to the WARN bit in the
corresponding input byte
1A
There is a fault at hand on
the variable frequency
drive/variable speed
starter.
• Read fault PNU 944 to
PNU 952
• Fix the fault and acknow-
ledge the error message
Corresponds to the ERR bit in the
corresponding input byte
