GE Industrial Solutions LP11 924 Series 6 & 10 kVA - Manual (Page 35)

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OPM_LPU_11U_6K0_10K_1US_V010.Doc 34 User manual LP11 924 6 & 10 kVA UPS 1.0
5.4.2 - STATUS AND ALARM MENU
The UPS alerts the user with a standard alarm screen that the operating mode has changed and/or that an alarm
situation occurs:
The actual operating mode, the possible modes are mentioned below. The lower line -if
displayed- shows that an alarm occurred. More information can be retrieved with the
'up' key. If no further information is available, the second line is blank.
ON LINE
ALARM PRESS UP
Possible operating modes:
ON LINE
The normal operating mode. For more information see section 3.2.
ON BYPASS
Overload or failure situation. For more information see section 3.4.
ON BATTERY
For a detailed description of this mode see section 3.3.
OUTPUT OFF
No power is delivered to the load. This can be the result of a command via the RS232 Port, or
because no electric energy is available (utility failure, depleted batteries).
ON MANUAL BYPASS
Service mode. For more information see section 3.5.
Depressing the 'up’ key from the standard alarm screen shows, in priority order, which alarms are active,. Scroll through the
screens with the 'up' and 'down' keys. Alarm message texts can succeed each other. The following messages are possible:
The output capacitor C2 is defective. Contact your GE Authorized Service.
LOADnotPROTECTED
CAP. C2 DEFECT
The load exceeds the rated output power of the UPS, and the output voltage can no
longer be guaranteed. This text alternates with the following screen: UPS OVERLOADED
REDUCE LOAD
UPS OVERLOADED
LOAD 143%
showing the actual load as % of the nominal UPS rating. These messages are
displayed if the load is > 100%.
If the load exceeds 150% the UPS will immediately switch to bypass, assuming that
the conditions for a transfer to bypass are fulfilled. If an overload condition between
100-150% persists, the UPS can eventually also switch to bypass operation due to
temperature protection. If a transfer to bypass is inhibited (due to voltage or frequency
errors of the utility supply) the UPS may automatically switch off within a few seconds
(load dependent). Output power is lost at that moment. To avoid these problems, be
absolutely certain that the power demands of the protected equipment are within the
limits of the UPS.
LOADnotPROTECTED
TEMP TOO HIGH
The temperature of the heatsinks or output transformer is too high. As a result the
output voltage may be transferred to bypass.
The operating temperature can rise to intolerable levels as a result of:
• extreme environmental temperature
• lack of proper ventilation
• an overload situation
• fan failure
If the UPS operates in 'on line' mode, it will switch to bypass until the temperature is
normal again. If however the UPS operates 'on battery', a shutdown will occur and
output power is lost.
The internal DC voltage is too high, internal failure.
LOADnotPROTECTED
VOLTAGE TOO HIGH
The output voltage of the battery charger is too high, internal failure.
BATTERY CHARGER
VOLTAGE TOO HIGH
The battery temperature is too high due to a battery failure or a too high ambient
temperature.
BATTERY CHARGER
TEMP TOO HIGH