EFX48-xx Series with RM3-340/440 Installation and Operation Guide
112
Copyright © 2019 Eaton Corporation. All Rights Reserved.
IPN March 2019
Alarm Definitions
System alarms
Low float and Low load alarms
Alarm triggers If the bus voltage is less than the low float or load voltage settings for
greater than the qualification period, and the system is not in battery
test then the low float/load voltage alarms are set
If the system is in battery test and the voltage does not recover within
24 hours after the end of the test then the low float/load voltage
alarms are set
Alarm cancel The low float/load alarm can only be cancelled by the voltage rising
above the appropriate voltage setting
High float and High load alarms
Alarm trigger If the bus voltage is greater than the high float or high load voltage
setting for greater than the qualification period then the high
float/load alarm is set ( note if the system is in equalise the voltage
settings are adjusted automatically to be just above the equalise
Alarm cancel The high load/alarm can only be cancelled by the voltage reducing
below the appropriate voltage setting
Input Overcurrent alarm
Alarm trigger If the input current to the SDU is greater than 55A for greater than 20s
then the input overcurrent alarm is raised
Alarm cancel
The input over current alarm is reset if an Auto-retry is successful and
the system returns to normal operation, or all the strings and outputs
are turned off for > 10s
System Overload alarm
Alarm trigger If the power delivered by the PDM is greater that the set power limit
then the system overload alarm is raised
Alarm cancel
The system overload alarm can only be cancelled by the power
delivered by the PDM reducing below the set power limit
Int temp alarm
Alarm trigger If at any time the SDU internal temperature sensor reads > 100C for
more than 10s then the internal temperature alarm is raised
Alarm cancel After the internal alarm has been set then only the internal
temperature reading reducing below 95C for more than 10s will cancel
the alarm
AC fail alarm
Alarm trigger If any of the communicating rectifiers report AC fail the AC fail alarm
Alarm cancel The AC fail alarm is cancelled by detecting that all communicating
Fan fail alarm
Alarm trigger If at any time the SDU internal fan fail circuitry reports that the fan is
failed the fan fail alarm is raised
Alarm cancel Fan fail alarm is cancelled when the detection circuitry reports fan ok
Action required If this alarm does not self-clear clear then the EFX48 needs to be
replaced
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