10-4 (32) 2UEA001270 Rev. F ACS2000 User manual
Chapter 10 - Troubleshooting and maintenance
connected to the drive. The fault log can also be called up on the CDP
control panel.
10.3.2 Error message levels
Two error message levels are used in the drive:
Alarm/warning An alarm does not shut down the drive. However, a persisting alarm
condition can often lead to a fault if the condition causing the alarm is not
corrected. An alarm cannot be reset manually. The alarm message will be
deleted from the display as soon as the alarm condition has been
corrected.
Fault A fault always shuts down the drive. The type of shutdown depends on the
origin of the fault.
Depending on the type of fault, the MV switchgear is opened by the drive
or stays closed:
• Class 1 faults (FC 1) open the MV switchgear
• Class 2 faults (FC 2) do not open the MV switchgear
Since the MV switchgear is controlled and monitored entirely by the drive,
no external opening command must be given to the MV switchgear when
a fault condition occurs.
In general, a fault condition must be corrected and the fault be manually
reset before the drive can be started again.
Alarm/fault handling In the event of an alarm or a fault, a specific message is saved in the fault
log of the drive. Information on the 64 most recent fault and alarm events
are saved.
The faults are entered into the fault buffer as they occur and are
numbered; the last fault entered always has number 1 assigned to it and
the first fault always has the highest number in the fault buffer.
Information of the fault classification (e.g. 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:
1. +Fault AMC: Fault Class 2 2011-01-08 16:58:24.3770
2. +Fault PPCS Communication 2011-01-08 16:58:24.3760
3. +Fault AMC: Fault Class 1 2011-01-08 16:56:02.1170
4. +Fault DC Undervoltage 2011-01-08 16:56:02.1170
In the above example:
• 4. +Fault DC Undervoltage is the reason for the failure of the drive,
as it occurred first.
• The message 3. +Fault AMC: Fault Class 1 classifies the fault.
To Next Page
Loading...
Need help?
General
