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UM1M820BNA User Instructions
Issue AH, March 4, 2013 Spec No. 1M820BNA (Model M820B)
Spec No. 1M820DNA (Model M820D)
38 Chapter 2. Operation
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Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Table 4
Full Alarm Name - WEB
(Abbreviated
Alarm Name - LCD)
Alarm Description
Action to Correct
Under Voltage 1 (24V)
(24V Under Volt1)
Output voltage is lower than the Under
Voltage 1 Alarm threshold.
Check to see why system voltage is
low. If there is a mains failure, check if
some load could be switched off in
order to prolong the operating time of
the plant. If the system load is too high
related to rectifier capacity, install
additional rectifiers. If the batteries are
being recharged, the alarm will cease
by itself when battery voltage has
increased to the charging level.
Under Voltage 2 (24V)
(24V Under Volt2)
Output voltage is lower than the Under
Voltage 2 Alarm threshold.
Diesel Run Over Temp
(DG Run OverTemp)
Diesel generator run over temperature
alarm.
Check diesel generator.
DG1 is Running
(DG1 is Running)
Diesel generator 1 is running.
--
DG2 is Running
(DG2 is Running)
Diesel generator 2 is running.
--
Hybrid is High Load
(High Load)
Diesel generator high load alarm.
Check load on diesel generator.
DG1 Failure
(DG1 Failure)
Diesel generator 1 has failed.
Check diesel generator.
DG2 Failure
(DG2 Failure)
Diesel generator 2 has failed.
Check diesel generator.
Grid is on
(Grid is on)
AC is on grid.
--
Ambient Temp High 1
(Amb Temp High1)
High diesel generator ambient
temperature alarm1.
Check why temperature is high or low.
Ambient Temp Low
(Amb Temp Low)
Low diesel generator ambient
temperature alarm.
Ambient Temp High 2
(Amb Temp High2)
High diesel generator ambient
temperature alarm2.
Ambient Sensor Fault
(AmbSensor Fault)
Diesel generator temperature sensor
failure.
Replace temperature sensor.