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Glossary of Alarms 
A-2 
Copyright © 2005-2006 Eaton Corporation.  All Rights Reserved. 
IPN 997-00012-41D    December 2006 
 
 
LVD1 Disconnect 
The operating conditions of the power system have automatically 
triggered a low voltage disconnect. 
 
LVD1 Fail 
LVD1 is faulty. 
 
LVD1 Manual 
A local operator has manually triggered LVD1.  (APS6-059 only) 
 
LVD2 Disconnect 
The operating conditions of the power system have automatically 
triggered a low voltage disconnect. 
 
LVD2 Fail 
LVD2 is faulty. 
 
LVD2 Manual 
A local operator has manually triggered LVD2.  (APS6-059 only) 
 
MOV Fail 
The surge protection system has failed.  One or more MOV 
cartridges may need to be replaced. 
 
Multiple Rectifier Comms Lost 
(displayed as Rects Comms Lost)
 
Normally this alarm indicates that multiple rectifiers have been 
removed during routine maintenance.  However, faulty rectifier 
communications or losing the rectifier communications bus can also 
trigger this alarm.  If removing multiple rectifiers triggers this alarm, 
you can reset it from the front panel before it triggers an external 
alarm. 
 
Multiple Rectifier Fail 
(displayed as Mult. Rect Fail)
 
Multiple rectifiers are faulty or their AC power has been removed 
without causing partial or total AC failure. 
 
Partial AC Fail 
More than 20% of the rectifiers are reporting loss of AC power or 
loss of a phase. 
 
Rectifier Comms Lost 
(displayed as Rect Comms Lost) 
A rectifier has been removed during routine maintenance.  However, 
faulty rectifier communications or losing the rectifier 
communications bus can also trigger this alarm.  If removing a 
rectifier triggers this alarm, you can reset it from the front panel 
before it triggers an external alarm. 
 
Rectifier Fail 
A rectifier is faulty or its AC power has been removed without 
causing partial or total AC failure.  You can reset a Rectifier Fail 
alarm from the front panel before it triggers an external alarm. 
 
Sensor Fail 
The current, temperature or voltage sensing system is faulty. 
 
System Overload 
The power system is operating close to its maximum capacity and 
more rectifiers may need to be inserted.  The System Overload 
threshold is configurable.