ABB ACS2000 AFE 2MVA, User Manual

Page: 157 / 181

157 ACS2000 AFE 2MVA UM 3BHS355653 ZAB E01 REV. H
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10.3 Alarm / fault indications
When ACS2000 senses a fault condition in the system, it logs the fault,
generates an alarm and if necessary shuts down the drive.
10.3.1 Messages
When a failure occurs in the drive or in the equip-
ment monitored by the drive (eg, main circuit
breaker, transformer, cooling system), the CDP
control panel displays a corresponding alarm or
fault message and the alarm / fault lamp on the
control compartment door lights up:
• Alarm: flashing light
• Fault: permanent light
The message can be saved and viewed in the fault
history of the drive when a PC with DriveWindow,
DriveDebug or DriveMonitor is connected to the
drive. The fault history 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
An alarm does not shut down the drive. If the con-
dition causing the alarm is not corrected, a persist-
ing alarm can often lead to a fault. An alarm cannot
be reset manually. The alarm message is deleted
from the display as soon as the alarm condition
has been corrected.
Fault
A fault shuts down the drive. The type of shutdown
depends on the origin of the fault.
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 external 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.
Alarm / fault messages
If 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.
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References
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10-2 Alarm / fault
indication
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10-2
1 L ->
600.0 rpm
ACS2000
***
FAULT
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MCB CloseControl