Emerson Remote Monitoring Panel user manual Condition is no longer true

Operation

Table 13	RMP messages (continued)
Message		Description / Suggested Action (if any)
		This alarm is triggered by an inverter software routine when the inverter and bypass waveforms
		are misaligned by more than 6 degrees in phase. This alarm resets automatically once the
		condition is no longer true.
Inverter Asynchronous		1. First check if the alarm “Bypass unable to trace” or “Bypass abnormal” occurs. If so, solve it
		first.
		2. Verify the waveform of the bypass voltage. If it is too distorted, ask the customer to verify and
		seek any possible measurements.
Inverter Fault		Inverter output voltage beyond limits. Load transfers to bypass.
		The temperature of the inverter heat sink is too high to keep inverter running.
		This alarm is triggered by the signal from a temperature monitoring thermostat on the inverter
		bridge heat sink.
		The UPS will recover automatically after a 5 minute delay from the disappearance of the
Inverter Overtemp.		overtemperature signal.
		If the overtemperature condition is true, then check for and verify:
		1. high ambient air temperature.
		2. blocked cooling airway.
		3. any fan failure.
		4. prolonged inverter overload
Fan Fault		At least one of the cooling fans has failed
Inverter STS Fail		At least one of the static switches of inverter side is open or short circuit. This fault is locked until
		power off.
Bypass STS Fail		At least one of the static switches of bypass side is open or short circuit. This fault is locked until
		power off
Operation Invalid		This record is registered following an incorrect operation:
Output Fuse Fail		At least one of the inverter output fuses is blown. Inverter shuts down. Load transfers to bypass.
Control Power 2 Fail		UPS operates but Redundant Control Power is not available.
		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
Unit Over load		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.
		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.
System Over load		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.
		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
Unit Over load Timeout		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).
Byp. Abnormal Shutdown		Both bypass and inverter voltages unavailable. Load interruption
Inverter Over Current		Inverter Pulse Width Modulation module overloaded.

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