UPS Alarm and Status Messages

Table 7

Liebert NXL alarm and status messages (continued)

 

 

 

Event Message

Event Definition

Recommended Action

 

 

 

Observe the One-Line Display and the Active Event

 

 

 

Window for current UPS condition - On Battery?

 

 

 

Observe the color of the Bypass Line on the One-

 

 

 

Line Display. If green, bypass is available. This is

 

 

 

significant, because if the batteries fail, the UPS

 

 

 

transfers safely to the bypass line.

 

 

 

If the UPS is on battery, and the bypass line on the

 

 

 

One-Line Display is not green, contact your factory-

 

 

 

authorized service provider immediately and

 

 

 

prepare to shut down as the UPS turns off once the

 

 

This summary event indicates a potentially

batteries are depleted. Press “SILENCE” to silence

 

 

the audible alarm.

 

 

serious condition in the Rectifier circuit. The

 

 

Press “RESET” to attempt to clear the fault

 

 

controls respond to this by turning off the

 

 

condition. If the Rectifier Fault clears, press

 

 

Rectifier, opening the input filter contactor, and

 

 

“Startup,” “Manual Start,” “Rectifier” to attempt to

Rectifier Fault

placing the UPS on battery operation.

restart the Rectifier.

 

 

This fault is non-latching. When the underlying

 

 

If this is successful, observe normal operation of the

 

 

condition is no longer present, this fault and any

 

 

Rectifier, indicated on the One-Line Display by a

 

 

control activity tied directly to this fault reverts to

 

 

green outline around the Rectifier box, and normal

 

 

normal.

 

 

DC Bus voltage on the DC Bus Meter. If the

 

 

 

 

 

 

Rectifier starts normally, attempt to close the input

 

 

 

filter contactor by pressing “Startup,” “Device

 

 

 

Control", "Close Trap".

 

 

 

If the UPS is not on battery, but transferred to

 

 

 

bypass, contact your factory-authorized service

 

 

 

provider.

 

 

 

If the Rectifier Fault was cleared by pressing

 

 

 

"RESET", but the fault returns as soon as a Rectifier

 

 

 

restart is attempted, contact your factory-authorized

 

 

 

service provider.

Redundant Fan

This alarm indicates a fan has failed

Press “SILENCE” to silence the audible alarm.

Fail

 

Contact your factory-authorized service provider.

 

 

 

 

Regeneration Mode is a service mode that is

 

 

 

normally controlled by the service technician.

 

 

 

Regeneration Mode Status or Alarm messages

Under normal circumstances, none.

 

 

are generally intended for the service person.

 

 

If this message is active, and there is no clear

Regen Active

This status message informs the user the UPS is

reason why the UPS is in Regeneration Mode,

 

 

in Regeneration Mode.

 

 

contact your factory-authorized service provider.

 

 

This status message is self-clearing. When the

 

 

 

 

 

condition is no longer present, the alarm and any

 

 

 

control activity tied to the alarm reverts to normal.

 

 

 

Regeneration Mode was initiated and terminated

 

 

 

because of an abnormal condition.

 

 

 

Once Regeneration Mode is active, any condition,

 

 

 

for example an Inverter Overload, other than the

 

 

 

user manually stopping Regeneration Mode,

Press “SILENCE” to silence the audible alarm.

 

 

causes this message to appear.

 

 

Regeneration Mode is a service mode that is

Press “RESET” to attempt to clear the alarm.

Regen Failure

normally controlled by the service technician.

If Regeneration Mode was not manually initiated by

 

 

Regeneration Mode Status or Alarm messages

service, or if this alarm will not reset, contact your

 

 

are generally intended for the service person.

factory-authorized service provider.

 

 

This status message informs the user the UPS is

 

 

 

in Regeneration Mode.

 

 

 

This status message is self-clearing. When the

 

 

 

condition is no longer present, the alarm and any

 

 

 

control activity tied to the alarm reverts to normal.

 

60

Page 66
Image 66
Emerson 250-400kVA manual Observe the One-Line Display and the Active Event