Operating instructions

Alarms
Following an alarm message the frequency converter will enter Fault condition. Only after the fault
has been alleviated and the master has acknowledged the alarm message by setting bit 7 in the
control word, can the frequency converter resume operation. Alarms within the frequency con-
verter are 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.
8.2.7. Fault Messages via DP Diagnosis
The standard DP function features an on-line diagnosis, which is active during DP initialisation as
well as data exchange mode.
VLT
®
Profibus 8. Troubleshooting
MG.33.C4.02 - VLT
®
is a registered Danfoss trademark
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