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Table 23 ups messages, Table 23, Ups messages – Emerson Liebert NX 50 and 60 Hz User Manual

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Operator Control Panel and Display

98

Current Record Window
Keeps a log the events that resulted in the current mode of operation. Ignores transient conditions

that have been resolved.
Use “page” (F1) and up / down arrow to read the events.
For a complete history log, refer to the Records tab of the Menu and Data Window.
Refer to Table 23 for a complete list of supported status messages.

8.2

All Status and Event Messages Displayed on the UPS Front Panel

This is the complete list of UPS events and status messages supported for display in either the Record

window (Historic data) or in the Current window (Prevailing data) as described in 8.1.4 - LCD Moni-

tor and Menu keys.

Table 23

UPS messages

Message

Description / Suggested Action (if any)

Inverter Comm. Fail

Internal RS485 communication failure between monitor and inverter

Rectifier Comm. Fail

Internal RS485 communication failure between monitor and rectifier

Parallel Comm. Fail

The CAN communication between different UPSs within a parallel system fails.
1.Check if there are some UPSs not powered on in the parallel system. If so, power
on these UPSs and check if the alarm disappears.
2. Press Fault Clear push button.

Battery Overtemp.

The Battery temperature is over limit. Check the battery temperature and ventilation

Ambient Overtemp.

The Ambient temperature is over limit. Check the ventilation of UPS room.

Battery Fault

Battery detected faulty (Reserved)

Replace Battery

Battery test failed, Battery should be replaced.

Battery Low Pre-warning

Before the end of discharge, battery undervoltage pre-warning should occur. After
this pre-warning, battery should have the capacity for 3 minutes discharging with full
load. The time is user-configured from 3 to 60 minutes.
Shut down the load in time.

Battery End of Discharge

Inverter turned off due to low battery voltage. Check the utility failure and try to
recover it.

Mains Volt. Abnormal

Mains Voltage exceeds the upper or lower limit and results in rectifier shutdown.
Check the input line-to-neutral voltage amplitude of rectifier.

Mains Undervoltage

Mains Voltage is undervoltage with derated load.
Check the input line-to-line voltage amplitude of rectifier

Mains Freq. Abnormal

Mains frequency is out of limit range and results in rectifier shutdown.
Check the rectifier’s input voltage frequency

Rectifier Fault

Rectifier detected faulty. Rectifier shuts down. Battery discharges.

Rectifier Overtemp.

The temperature of heat sink is too high to keep the rectifier running.
The UPS can recover automatically. Check the environment and ventilation.

Batt. Contactor Fail

Battery contactor or circuit breaker not responding to control signals.

Batt. Charger Fault

The voltage of the battery charger is too high.

Control Power 1 Fail

UPS operates but Redundant Control Power is not available.

Mains Phase Reversed

AC Input phase sequence is reversed.

Rectifier Overcurrent

Rectifier is overloaded.

Soft Start Fail

Rectifier could not start due to low DC bus voltage

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