Emerson Remote Monitoring Panel user manual Epo

Operation

Table 13 RMP messages (continued)

Message	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
Bypass Phase Reversed	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
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.
	The load is on bypass power due to excessive number of transfers that occurred within the last
Transfer Time-out	hour.
	The UPS will recover automatically and will transfer the load back to inverter power within an
	hour.
Load Sharing Fault	UPS modules within a parallel system are not sharing the load current equally.
DC Bus Abnormal	DC input voltage to inverter beyond limits. Inverter shuts down. Load transfers to bypass.
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	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.
DC Bus Over Voltage	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.
Parallel Connect Fault	Reset the fault by pressing the “fault clear” button, then restart the inverter by pressing the
	“inverter on” button.
Bypass Over Current	Bypass current is over limit above 135% rating. The UPS just alarms and does nothing.
LBS Active	Load Bus Synchronization is active. The UPS is acting as an LBS master or slave in a dual bus
	configuration.
Setting Save Error	History records not saved. (Reserved)
Mains Neutral Lost	AC Input mains reference neutral not detected.
Protocol version clash	Firmware incompatibility between Monitor Board and Digital Signal Processor Board.
Battery ground fault	Battery leakage to ground detected (option)
Inv. Turned On Manually	Manual Turn On via front panel
Inv. Turned Off Manually	Manual Turn Off via front panel
EPO	Emergency Power Off direct access key pressed or external command received
Transfer Confirm	Prompt to press “enter” key to acknowledge that an interrupted load transfer to bypass will
	happen.
Transfer Cancel	Prompt to press “ESC” key to avoid that an interrupted load transfer to bypass will happen.
Unit Off Confirm	Prompt to press “enter” key to acknowledge that the UPS will be disconnected from other
	paralleled UPS modules.
System Off Confirm	Prompt to press “enter” key to acknowledge that the all paralleled UPS will be disconnected
	from the load.
Fault Reset	Fault clear direct access key pressed
Alarm Silence	Silence On/Off direct access key pressed
Turn On Fail	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.
Alarm Reset	Fault clear or Silence On/Off direct access key pressed
Bypass Mode	Load supplied from AC input bypass supply.
Normal Mode	Load supplied from Inverter output through double conversion of the AC mains input supply.
Battery Mode	Load supplied from Inverter output through double conversion of the Battery supply.
Source share mode	Load supplied from Inverter output through shared double conversion of the AC mains input
	supply and of the Battery supply.

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