PREVENTIVE AND CORRECTIVE MAINTENANCE
PRODUCT
ACS6000
DOCUMENT KIND
User manual
DOCUMENT ID.
3BHS212794 E01
REV.
N
LANG.
en
PAGE
210/266
Depending on the type of fault, the drive opens the main circuit breaker (MCB) or
keeps it closed:
– Class 1 faults (FC 1) open the MCB
– Class 2 faults (FC 2) do not open the MCB
Since the MCB is controlled and monitored entirely by the drive, no opening
command must be given to the MCB when a fault condition occurs.
A fault condition must be corrected and the fault be manually reset before the drive
can be started again.
10.3.2.1. Alarm and fault messages
When an alarm or a fault occurs, a specific message is saved in the fault buffer of
the drive. Information on the 64 most recent fault and alarm events are saved.
10.3.2.2. Fault handling
The faults are entered into the fault buffer as they occur and are numbered:
– The last fault entered has number 1.
– The first fault entered has the highest number.
Information of the fault classification (eg, FC 1 or FC 2) is also saved when the first
fault of the fault class is active. Date and time stamps facilitate fault tracing,
especially when a fault leads to several subsequent faults.
Example:
In the above example:
For more information on alarms and faults, see “Appendix G - Signal and
parameter table”.
1) +Fault AMC: Fault Class 2 2008-01-08 16:58:24.3770
2) +Fault PPCS Communication 2008-01-08 16:58:24.3760
3) +Fault AMC: Fault Class 1 2008-01-08 16:56:02.1170
4) +Fault DC Undervoltage 2008-01-08 16:56:02.1170
1) +Fault AMC: Fault Class 2 Classifies the fault.
2) +Fault PPCS Communication
rRepresents a subsequent fault that
occurred 2 min. 22 s than the first fault
3) +Fault AMC: Fault Class 1 Classifies the fault.
4) +Fault DC Undervoltage
Is the reason for the failure of the drive
system as it occurred first
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