Vertiv NetSure M830B User Manual

Vertiv™ NetSure™ Control Unit (NCU) User Manual
65
Table 2.3
Alarm Name Alarm Description Action to Correct
485 Communication Failure 485 communications failure. --
Minor Summary
Minor alarm summary (one or more alarms designated
as minor is active).
Check additional alarms.
Major Summary
Major alarm summary (one or more alarms designated
as major is active).
Check additional alarms.
Critical Summary
Critical alarm summary (one or more alarms designated
as critical is active).
Check additional alarms.
Rectifier Group Lost A rectifier group cannot be detected by the controller.
Check communications cables.
Check additional alarms.
Over Voltage 1
Output voltage is higher than the Over Voltage 1 Alarm
threshold.
Check why system voltage is high. Check the alarm
setting.
Over Voltage 2
Output voltage is higher than the Over Voltage 2 Alarm
threshold.
Under Voltage 1
Output voltage is lower than the Under Voltage 1 Alarm
threshold.
Check 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
Output voltage is lower than the Under Voltage 2 Alarm
threshold.
Over Voltage 1 (24V)
Output voltage is higher than the Over Voltage 1 Alarm
threshold.
Check why system voltage is high. Check the alarm
setting.
Over Voltage 2 (24V)
Output voltage is higher than the Over Voltage 2 Alarm
threshold.
Under Voltage 1 (24V)
Output voltage is lower than the Under Voltage 1 Alarm
threshold.
Check 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)
Output voltage is lower than the Under Voltage 2 Alarm
threshold.
Diesel Run Over Temp Diesel generator run over temperature alarm. Check diesel generator.
DG1 is Running Diesel generator 1 is running. --
DG2 is Running Diesel generator 2 is running. --
Hybrid is High Load Diesel generator high load alarm. Check load on diesel generator.
DG1 Failure Diesel generator 1 has failed. Check diesel generator.
DG2 Failure Diesel generator 2 has failed. Check diesel generator.
Grid is on AC is on grid. --
Main Ambient Temp High1 Main Ambient Temperature High1 alarm.
Check why temperature is high or low. Main Ambient Temp Low Main Ambient Temperature Low alarm.
Main Ambient Temp High2 Main Ambient Temperature High2 alarm.
Main Ambient Sensor Fail Main ambient temperature sensor failure. Replace temperature sensor.
Relay Test Relay Test in progress. --

Vertiv NetSure M830B Specifications

General

Brand	Vertiv
Model	NetSure M830B
Category	Controller
Language	English