IBM 11000 VA LCD 5U, Installation And Maintenance Manual

Page: 74 / 92

Table 14. Typical alarms and conditions (continued)
Alarm or condition Possible cause Action
Remote Emergency Power Off
(Alarm 12)
Fast Beeping Alarm The external contacts in the rear of
the UPS are configured for remote
emergency power-off operation, and
they are activated. The UPS de-energizes the load and
enters Standby mode. For more
information, see “Installing the remote
emergency power-off” on page 14.
Output Overload
(Notice 25)
Slow Intermittent Alarm The load level is at or has exceeded
the configurable threshold limit for a
Level 1 Overload condition.
See “Behavior on overload” on page
37. The UPS can support the load
indefinitely at this load level.
The alarm clears when the load drops
below 5% of the set point.
Output Overload Level 2
(Alarm 159)
Fast Beeping Alarm The load level is >101% and <110%
of the UPS rating.
See “Behavior on overload” on page
37. Immediately remove some of the
equipment from the UPS.
The alarm clears when the load drops
below 5% of the set point.
Output Overload Level 3
(Alarm 162)
Fast Beeping Alarm The load is >110% of the UPS rating.
See “Behavior on overload” on page
37. Shutdown is imminent.
The alarm clears when the load drops
below 5% of the set point.
Battery DC Over Voltage
(Alarm 68)
Fast Beeping Alarm The battery voltage levels have
exceeded the maximum allowable
limits. The UPS turns off the charger until
the next power recycle. Contact your
service representative.
Charger Failure
(Alarm 34)
Continuous Alarm A battery charger fault has been
detected. The UPS turns off the charger until
the next power recycle. Contact your
service representative.
Inverter AC Over Voltage
(Alarm 0)
Fast Beeping Alarm The UPS has detected abnormally
high output voltage levels. The UPS transfers to Bypass mode if
supporting the load.
Inverter AC Under Voltage
(Alarm 1)
Fast Beeping Alarm The UPS has detected abnormally
low output voltage levels. The UPS transfers to Bypass mode if
supporting the load.
Rectifier Input Over Current
(Alarm 26)
Fast Beeping Alarm The UPS has detected that rectifier
input current limits have been
exceeded. The UPS transfers to Battery mode if
supporting the load.
Inverter Output Over Current
(Alarm 27)
Fast Beeping Alarm The UPS has detected that the
inverter output current limits have
been exceeded. The UPS transfers to Bypass mode if
supporting the load.
DC Link Over Voltage
(Alarm 28)
Fast Beeping Alarm The link or rail voltage has exceeded
its upper threshold limit. The UPS transfers to Bypass mode if
supporting the load.
DC Link Under Voltage
(Alarm 29)
Fast Beeping Alarm The link or rail voltage has dropped
below its lower threshold limit. The UPS transfers to Bypass mode if
available and supporting the load, or
Fault mode if not.
Inverter Fault
(Alarm 31)
Continuous Alarm The UPS has detected a fault in the
inverter circuit while attempting a
recovery from Bypass mode or Fault
mode. Contact your service representative.
Rectifier Fault
(Alarm 30)
Continuous Alarm The UPS has detected a fault in the
rectifier circuit while attempting a
recovery from Bypass mode or Fault
mode. Contact your service representative.
Output Short Circuit
(Alarm 58)
Fast Beeping Alarm The UPS has detected an abnormally
low impedance placed on its output
and considers it a short circuit. The UPS shuts down after five line
cycles.
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11000 VA UPS and 11000 VA EBM: Installation and Maintenance Guide