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| UPS Alarm and Status Messages | |
Table 7 | Liebert NXL alarm and status messages (continued) | |||
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Event Message | Event Definition | Recommended Action | ||
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| An active Input Current Limit alarm means the | Press “SILENCE” to silence the audible alarm. | |
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| detected input current (RMS) exceeds the limit | ||
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| setpoint (default is 125%). This may be normal | Observe the meters on the | |
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| depending on various operating conditions, such | input voltage level, battery charge/discharge | |
Input Current Limit | as input voltage level, output load level, and | current, and output load percentage kW. Investigate | ||
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| whether the batteries have recently discharged. | any abnormal readings. | |
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| This alarm is | If the reason for the alarm cannot be determined, | |
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| no longer present, the alarm and any control | contact your | |
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| activity tied to the alarm reverts to normal. |
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Input Disconnect | The rectifier disconnect device indicates that it is |
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(Q1) Open |
| in the open position. |
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Input Disconnect | The externally mounted input isolator indicates |
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(Q11) Open |
| that it is in the open position. |
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| The Input Filter Disconnect is locked open. |
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| The Input Filter Disconnect Cycle counter has | Press “SILENCE” to silence the audible alarm. | |
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| exceeded the setpoint. The Input Filter | ||
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| Disconnect opens automatically as determined by | Attempt to manually close the disconnect by | |
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| the disconnect settings, or because of an unusual | pressing “Startup,” “Device Control,” “Close Trap.” | |
Input Filter Cycle | condition. | If the condition which caused the filter disconnect to | ||
An example of a setting would be to automatically | lock open is still present, it | |||
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| open the filter disconnect under light load | If the disconnect cannot be manually closed or the | |
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| conditions to improve the input power factor. An | alarm cannot be cleared, contact your factory- | |
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| example of an unusual condition would be | authorized service provider. | |
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| unbalanced currents on the input, possibly |
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| because of a suspect component in the filter itself. |
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| This summary alarm means there is a problem | Press “SILENCE” to silence the audible alarm. | |
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| with input power. It is not acceptable to the | ||
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| Rectifier. | Examine the | |
Input Not Avail | If the unit is running normally when this event | line feeding the Input Breaker should be green. If | ||
occurs, the UPS goes to battery. | not, investigate source power to the UPS. | |||
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| This alarm is | If input power is good, and this alarm is active, | |
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| no longer present, the alarm and any control | contact your | |
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| activity tied to the alarm reverts to normal. |
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| This is a summary event caused by an |
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| interruption in communication between the |
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| controls and a device on the Controller Area |
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| Network (CAN). | Press “SILENCE” to silence the audible alarm. | |
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| The Internal Communication Error event indicates | ||
Internal Comm | Press “RESET” to clear the alarm. | |||
a loss of communications between the controls | If the alarm cannot be reset, or if the alarm condition | |||
Error |
| and an external device. | ||
| returns, contact your | |||
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| The Internal Communication Error is displayed | ||
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| provider. | ||
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| when the controls detect a loss of communication | ||
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| to a device on the Controller Area Network (CAN). |
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| An infrequent occurrence that resets immediately |
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| is probably not serious. |
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| An overload condition is active on A phase. | Press “SILENCE” to silence the audible alarm. | |
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| A phase load condition exceeds 105%. | ||
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| Check the Module Output Meter and note the A | ||
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| A countdown timer is displayed on the | ||
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| phase load percentage. | ||
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| Display in response to this alarm, and indicates | ||
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| If possible, reduce A phase loading. | ||
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| the time remaining until a transfer to bypass | ||
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| If the steady state load remains above 105%, allow | ||
Inv Overload Ph A | occurs. The length of time remaining until transfer | |||
the UPS to transfer to bypass and contact your | ||||
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| is directly proportional to the severity of the | ||
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| overload. | ||
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| If the displayed load percentage is less than 100% | ||
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| This alarm is | ||
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| and the alarm is still active, contact your factory- | ||
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| no longer present, the alarm and any control | ||
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| authorized service provider. | ||
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| activity tied to the alarm reverts to normal. | ||
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