Vertiv M830D - Page 58

NetSure
™
Control Unit (NCU)
User Manual, UM1M830BNA
Spec. No: 1M830BNA, 1M830DNA Code: UM1M830BNA
Model No: M830B, M830D Revision M, May 12, 2017
[48]
Table 5
Alarm Name
Alarm Description
Action to Correct
Rectifier Group 2 [3, 4] Alarms
All Rectifiers Comm Fail
No response from all rectifiers.
Check the connectors and cables or the CAN
loop. Replace the controller.
Rectifier Lost
A rectifier cannot be detected by the
controller.
Reset the Rectifier Lost alarm. Replace
defective rectifier.
Communication Failure
A rectifier has lost communications with the
controller.
Reset the Comm Fail alarm. Replace
defective rectifier.
Mains Failure
Rectifier commercial AC input power failure.
--
Multiple Rectifiers Fail
More than one rectifier has failed.
Check input voltage to rectifiers. Replace
rectifiers.
Group I [II, III] Rectifier Alarms
AC Input Failure
No AC input power to a rectifier.
Check why no AC input power available.
Rectifier HighTemperature
A rectifier has a high temperature condition.
Check why temperature is high.
Rectifier Fault
A rectifier has a fault condition.
Refer to Rectifier User Manual for
troubleshooting information.
Overvoltage
A rectifier has an over voltage condition.
Rectifier Protected
A rectifier is in protected mode.
Fan Failure
A rectifier’s fan has failed.
Replace fan.
Power Limit
A rectifier is in power limit.
--
Rectifier Communication Fail
A rectifier has lost communications with the
controller.
Check communications cables. Reset the
Communication Fail alarm. Replace the
rectifier.
Derated
A rectifier is in output power derating mode.
Refer to Rectifier User Manual for
troubleshooting information.
Current Sharing Alarm
A rectifier has a current sharing alarm.
AC Undervoltage Protection
A rectifier is in under voltage protection
mode.
Solar Converter Group Alarms
Multiple Solar Converter Failure
More than one solar converter has failed.
Check input voltage to solar converters.
Replace solar converters.
Solar Converter Lost
A solar converter cannot be detected by the
controller.
Reset the Solar Converter Lost alarm.
Replace defective solar converter.
All Solar Converters Comm Fail
No response from all solar converters for a
time duration of 73 hours.
Check the connectors and cables or the CAN
loop. Check the DC input to the solar
converters. Replace the controller.
Solar Converter Alarms
Input Failure
No input power to a solar converter.
Check why no input power available.
Solar Converter Temperature High
A solar converter has a high temperature
condition.
Check why temperature is high.
Solar Converter Fail
A solar converter has a fault condition.
Refer to Solar Converter User Manual for
troubleshooting information.
Over Voltage
A solar converter has an overvoltage
condition.
Solar Converter Protected
A solar converter is in protected mode.