Vertiv M830D - Page 74

NetSure
™
Control Unit (NCU)
User Manual, UM1M830BNA
Spec. No: 1M830BNA, 1M830DNA Code: UM1M830BNA
Model No: M830B, M830D Revision M, May 12, 2017
[64]
Table 5
Alarm Name
Alarm Description
Action to Correct
Current1 High 1 Current
Current 1 above High 1 limit.
Check why current is high.
Current1 High 2 Current
Current 1 above High 2 limit.
…
…
…
…
Current5 High 1 Current
Current 5 above High 1 limit.
Current5 High 2 Current
Current 5 above High 2 limit.
Converter Group Alarms
Multiple Converters Fail
More than one converter has failed.
Check input voltage to converters. Replace
converters.
Converter Lost
A converter cannot be detected by the
Controller.
Reset the Converter Lost alarm. Replace
defective converter.
All Converters Comm Fail
No response from all converters.
Check the connectors and cables or the CAN
loop. Replace the controller.
Over Current
Over current condition exists.
Check why.
Converter Protect
A converter is in protected mode.
Refer to Converter User Manual for
troubleshooting information.
Converter Alarms
Communication Fail
A converter has lost communications with
the controller.
Check communications cables. Reset the
Communication Fail alarm. Replace the
converter.
Over Temperature
A converter has an over temperature
condition.
Check why temperature is high.
HVSD Alarm
A converter has an overvoltage condition.
Refer to Converter User Manual for
troubleshooting information.
Fan Fail
A converter’s fan has failed.
Replace fan.
Power Limit
A converter is in power limit.
--
Low Input Volt
Input voltage to a converter is low.
--
Converter Fail
A converter has a fault condition.
Refer to Converter User Manual for
troubleshooting information.
EEPROM Fail
A converter’s EEPROM has failed.
Thermal Shutdown
A converter is in thermal shutdown.
Mod ID Overlap
Converter module ID’s overlap.
--
Under Voltage
A converter has an under voltage condition.
(The hysteresis value is 2V.)
--
Over Voltage
A converter has an over voltage condition.
(The hysteresis value is 2V.)
--
Under Voltage (24V)
A converter has an under voltage condition.
(The hysteresis value is 1V.)
--
Over Voltage (24V)
A converter has an over voltage condition.
(The hysteresis value is 1V.)
--
Converter Summary Alarm
Converter alarm summary (one or more
alarms designated as converter is active).
Check additional alarms.