Brochures and Data Sheets

NetSure
™
ACU+ Controller (Advanced Control Unit Plus)
User Instructions, UM1M820BNA (Issue AK, March 3, 2014)
Spec. No: 1M820BNA, 1M820DNA Code: UM1M820BNA
Model No: M820B, M820D Issue AK, March 3, 2014
33
Table 5
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.