Emerson Liebert Remote Monitoring Panel User Manual page 22

Table 13 RMP messages (continued)
Message
Bypass Phase Reversed
Load Impact Transfer
Transfer Time-out
Load Sharing Fault
DC Bus Abnormal
System Transfer
Parallel Board Fault
DC Bus Over Voltage
Parallel Connect Fault
Bypass Over Current
LBS Active
Setting Save Error
Mains Neutral Lost
Protocol version clash
Battery ground fault
Inv. Turned On Manually
Inv. Turned Off Manually
EPO
Transfer Confirm
Transfer Cancel
Unit Off Confirm
System Off Confirm
Fault Reset
Alarm Silence
Turn On Fail
Alarm Reset
Bypass Mode
Normal Mode
Battery Mode
Source share mode
Description / Suggested Action (if any)
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
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.
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.
UPS modules within a parallel system are not sharing the load current equally.
DC input voltage to inverter beyond limits. Inverter shuts down. Load transfers to bypass.
The whole paralleled UPS system transferred to bypass at the same time. This message will
appear on the UPS which passive transfer to bypass
Malfunction of the paralleling control circuits of this UPS module. Can cause "System Transfer"
to bypass.
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
The parallel cables are not connected correctly in a parallel system.
Reset the fault by pressing the "fault clear" button, then restart the inverter by pressing the
"inverter on" button.
Bypass current is over limit above 135% rating. The UPS just alarms and does nothing.
Load Bus Synchronization is active. The UPS is acting as an LBS master or slave in a dual bus
configuration.
History records not saved. (Reserved)
AC Input mains reference neutral not detected.
Firmware incompatibility between Monitor Board and Digital Signal Processor Board.
Battery leakage to ground detected (option)
Manual Turn On via front panel
Manual Turn Off via front panel
Emergency Power Off direct access key pressed or external command received
Prompt to press "enter" key to acknowledge that an interrupted load transfer to bypass will
happen.
Prompt to press "ESC" key to avoid that an interrupted load transfer to bypass will happen.
Prompt to press "enter" key to acknowledge that the UPS will be disconnected from other
paralleled UPS modules.
Prompt to press "enter" key to acknowledge that the all paralleled UPS will be disconnected
from the load.
Fault clear direct access key pressed
Silence On/Off direct access key pressed
Inverter failed to turn on when Inverter On direct access key was pressed. This may be as a
result of Invalid Operation (Maintenance bypass on) or DC bus or rectifier not ready.
Fault clear or Silence On/Off direct access key pressed
Load supplied from AC input bypass supply.
Load supplied from Inverter output through double conversion of the AC mains input supply.
Load supplied from Inverter output through double conversion of the Battery supply.
Load supplied from Inverter output through shared double conversion of the AC mains input
supply and of the Battery supply.
18
Operation