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Liebert Nx 500kva Ups
Liebert Nx 30 Kva Ups Manual
Liebert 300 Kva Ups
Emerson Liebert NX 30kVA Pdf User Manuals. View online or download Emerson Liebert NX 30kVA Installation Manual. Manuals; Brands; Emerson Manuals; UPS; Liebert NX 30kVA; Emerson Liebert NX 30kVA Manuals Manuals and User Guides for Emerson Liebert NX 30kVA. Emerson Liebert NX 30 kVA; Emerson Liebert NX 50 and 60 Hz; Emerson. Liebert NX is a mid-sized, three-phase uninterruptible power supply (UPS) system that delivers complete, centralized data center power protection. Read online or download PDF. Page 107 / 112. Emerson Liebert NX 10-30kVA User Manual. Emerson Tools Manuals Directory ManualsDir.com - online owner manuals library Search.
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Liebert NX 30 kVA Pdf User Manuals. View online or download Liebert NX 30 kVA User Manual.
UPS Status Messages
100
DC Bus Overvoltage
Rectifier, inverter and battery converter were shutdown because DC bus voltage is too high.
Check whether there is a fault in rectifier side. If no, then check whether overload occurs.
Restart the inverter after resetting the fault. If fault does not clear, contact Liebert Global Services
at 800-543-2378 for assistance.
Parallel Connect Fault
The parallel cables are not connected correctly in a parallel system.
1. Reset the fault by pressing the 'fault clear' button, then restart the inverter by pressing the
'inverter on' button.
2. If the UPS does not resume normal operation, contact Liebert Global Services at
800-543-2378 for assistance.
Bypass Overcurrent
Bypass current is over limit above 135% rating. The UPS just alarms and does nothing.
Refer to
your installation documentation or
contact Liebert Global Services at 800-543-2378 for
assistance.
LBS Active
The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus
configuration.
Battery ground fault
Battery ground fault from dry contact signal. Contact Liebert Global Services at 800-543-2378 for
assistance.
Inverter turned On
manually
Manual Turn On via front panel
Inverter turned Off
manually
Manual Turn Off via front panel
EPO
Emergency Power Off
Transfer Confirm
Interrupted Transfer Confirm
Transfer Cancel
Interrupted Transfer is cancel
Unit Off Confirm
Unit Turned Off Confirm
System Off Confirm
Parallel System Turned Off Confirm
Fault Reset
Fault Rest
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Alarm Silence
Alarm Silence
Turn On Fail
Turn On Fail
Alarm Reset
Liebert Nx 30 Kva Ups Manual
Audible Alarm Reset
Bypass Mode
UPS in Bypass Mode
Normal Mode
UPS in Normal Mode
Battery Mode
UPS in Battery Mode
Joint Mode
UPS in Inverter Mode
UPS Shutdown
UPS Shutdown, output power-down
Output Disabled
UPS Output Disabled
Generator Connected
Generator is connected and a signal is sent to UPS
Input Disconnect Open
Input Disconnect Open
Input Disconnect Closed
Input Disconnect Closed
Maint. Disconnect Open
Maintenance Disconnect Open
Maint. Disconnect Closed
Maintenance Disconnect Closed
Reserved
Rotary Sw. Test Pos.
Rotary switch is in test position.
Rotary Sw. Normal Pos.
Rotary switch is in normal position.
Rotary Sw. Bypass Pos.
Rotary switch is in bypass position.
Rotary Sw. Maint. Pos.
Rotary switch is in maintenance position.
Bypass Disconnect Open
Bypass Disconnect Open
Bypass Disconnect Closed Bypass Disconnect Closed
Output Disconnect Open
Output Disconnect Open
Output Disconnect Closed Output Disconnect Closed
Table 44
UPS status messages
(continued)
Event Message
Description / Suggested Action (if any)
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UPS Status Messages
99
Inverter Contactor Fail
The Inverter contactor has failed.
This alarm is triggered when the feedback signal and the state of the contactor is not identical for
a specified time. Contact Liebert Global Services at 800-543-2378 for assistance.
Output Fuse Fail
At least one of the output fuses is open. Contact Liebert Global Services at 800-543-2378 for
assistance.
Control Power 2 Fail
Control Power 2 is abnormal or lost. Contact Liebert Global Services at 800-543-2378 for
assistance.
Unit Overload
The UPS is confirmed to be overload when the load arises above 105% nominal rating.
The alarm automatically resets once the overload condition is removed.
1. Confirm that the alarm is true by checking the load percent indicated on the LCD panel to
determine which phase is being overloaded.
2. If the alarm is true, measure the actual output current to verify that the indications are valid.
Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load
sharing error can also leads to the alarm.
Contact Liebert Global Services at 800-543-2378 for assistance.
System Overload
The UPS parallel system is confirmed to overload when the total load arises above 105% nominal
rating for the set basic number of UPSs. The alarm automatically resets once the overload
condition is removed.
1. Confirm that the alarm is true by checking the system load percent indicated on the LCD
panel to determine which phase is being overloaded.
2. If the alarm is true, measure the actual output current to verify that the indications are valid.
Disconnect unnecessary load and ensure the safety. In a parallel system, a severe load
sharing error can also leads to the alarm.
Unit Overload Timeout
The UPS is confirmed to overload and the overload times out.
Note 1:
the highest loaded phase will indicate overload timing-out first.
Note 2:
When the timer is active then alarm “unit overload” should also be active as the load is
above nominal.
Note 3:
When the timer has expired, the inverter Static Switch is opened and the load transferred
to bypass. The inverter shutdown and will restart after 10 seconds.
Note 4:
If the load decreases lower than 95% after 5 minutes, the system will transfer back to
inverter mode.
Confirm that the alarm is genuine by checking the load percent indicated on the LCD. If an
overload is indicated then check the load, and investigate any additional load connected prior to
the alarm (if applicable).
Inverter Overcurrent
The current of inverter IGBT is over limit. If the fault will not reset, contact Liebert Global Services
at 800-543-2378 for assistance.
Bypass Phase Reversed
The phase sequence direction of bypass voltage is reversed.
Normally, the phase of phase B lags 120 degrees behind phase A, and the phase of phase C lags
120 degrees behind phase B.
Verify that the phase rotation of the bypass supply presented to the UPS is correct, and rectify it if
it is found to be in error. Contact Liebert Global Services at 800-543-2378 for assistance.
Load Impact Transfer
A transfer to bypass occurred due to a large step load. The UPS should recover automatically.
Turn on connected equipment in sequential order to reduce the step loading of the inverter.
Transfer Timeout
The load is on bypass power due to excessive number of transfers that occurred within the last
hour.
The UPS will recover automatically and will transfer the load back to inverter power within an
hour.
Load Sharing Fault
UPS working within a parallel system are not sharing load current correctly. Contact Liebert
Global Services at 800-543-2378 for assistance.
DC Bus Abnormal
Shut off inverter due to abnormal DC bus voltage.
Contact Liebert Global Services at 800-543-2378 for assistance.
System Transfer
The whole paralleled UPS system transferred to bypass at the same time. This message will
appear on the UPS which passive transfer to bypass.
Parallel Board Fault
Parallel board is not working correctly. Contact Liebert Global Services at 800-543-2378
for assistance.
Table 44
UPS status messages
(continued)
Event Message
Description / Suggested Action (if any)
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