Vertiv Liebert EXS - Page 76

Alarm/Warning Description Action
MMS Inv. Manual On
Power button is pressed on one UPS, and select the parallel system
for unified startup.
None required
Module Comms.
Normal
Communication between the module and monitoring is normal. None required
Module in Sleeping
The module is in sleep mode and the module does not work. Only the
UPS configured with intelligent ECO demo mode can present this
state.
None required
Module Output
Breaker Open
The external output breaker switch is opened. The UPS is being serviced, the load is not protected.
Module
Overtemperature
The power tubes of rectifier and inverter inside the module have
overtemperature.
Contact Vertiv Technical Support.
MonCAN Comms.
Abnormal
Monitor software being updated. Contact Vertiv Technical Support.
No battery
Either no battery is connected or the battery connections have
become loose or disconnected.
Call a qualified electrician to verify the battery wiring or
contact Vertiv Technical Support.
On Generator Dry contact signal. The system is in generator mode. None required
Operation Invalid
Maintenance bypass switch and output switch are closed when the
inverter is on.
Other Bypass STS
fail
One unit in the parallel system had at least one of the bypass SCRs
has failed .
Contact Vertiv Technical Support.
Other Module
Transfer
One unit in the parallel system transferred to bypass and this message
appears on all other units in the parallel system.
Contact Vertiv Technical Support.
Output Disabled EOD event happened. Check the battery voltage.
Output Fuse fail
At least one of the inverter output fuses has opened and the load will
transfer to bypass power if available.
Contact Vertiv Technical Support.
Output overload
The connected equipment has exceeded the inverter ratings. The
load will transfer to bypass power if available, otherwise it will
shutdown.
Verify the connected load and disconnect any
unauthorized equipment or check if load is properly
balanced.
Output Overload
Timeout
The UPS inverter overload timer has expired; the load automatically
transfers to the bypass.
Verify the connected load and disconnect any
unauthorized equipment. This alarm resets automatically
once the condition is no longer true.
Output Transf.
Overtemp.
The optional output transformer temperature has exceeded pre-set
limits.
Contact Vertiv Technical Support.
Output Voltage
Abnormal
At least one output phase voltage is outside of specified limits. Contact Vertiv Technical Support.
Overvoltage N-GND The Neutral to Ground voltage exceeds present limits.
Call a qualified electrician to verify the input wiring and
neutral ground bond connections.
Parameter Config.
Fail
EEPROM operation failed during DSP configuration, or DSP parameter
issued by MON failed.
Contact Vertiv Technical Support.
Power Hardware
Mismatch
The model information set at the host is inconsistent with the actual
situation.
Contact Vertiv Technical Support.
Table 9.2 UPS Alarm and Warning Messages (continued)
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Vertiv™ Liebert® EXS Installer/User Guide