Alpha Technologies CFR 600, CFR 600XT, CFR 1000 - Manual (Page 51)

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5. RS-232 TERMINAL COMMUNICATION
5.12 Event Descriptions, continued
Blackout (BLACKOUT) - The blackout alarm is triggered when the input
voltage is lost for 12 ms, or when the RMS input voltage is less than 1/2 the
nominal voltage for 100 ms or longer. * *
Frequency High (FREQ_HI) - A frequency high alarm is triggered when
there is a power line problem where the input frequency increases beyond the
preset limit. * *
Frequency Low (FREQ_LO) - A frequency low alarm is triggered when
there is a power line problem where the input frequency decreases beyond the
preset limit. * *
Output Voltage Low (VOLT_LO) - The output voltage low alarm
indicates that the output of the UPS is too heavily loaded, or there is a fault
within the UPS. Reduce the load connected to the UPS.
Output Voltage High (VOLT_HI) - The output voltage high alarm can be
caused by some equipment which draws power at irregular intervals.
Disconnect all equipment from the UPS and determine whether the fault will
repeat. If it does, the unit may be out of calibration, or there is an internal fault
causing the overvoltage condition. Have the unit serviced by an authorized
Alpha Repair Depot.
Output Power Overload (PWR_OVLD) - The output power overload
alarm indicates a condition where the output of the UPS is too heavily loaded.
If this is not corrected, the unit may go into a shutdown condition to protect the
UPS's internal circuitry.
Output VA Overload (VA_OVLD) - The output VA overload alarm is
triggered when the RMS current exceeds the rating of the UPS. Reduce the
load on the output of the UPS to prevent overheating.
Output Over Voltage Fault (OVER_V_FLT) - The output overvoltage
fault alarm indicates a malfunction has been detected in the control circuit.
The output voltage has been shut off to protect the load from an overvoltage
condition.
Output Short Circuit (SHORT_CCT) - The output short circuit alarm
indicates a load was connected to the UPS that was shorted. This could be
caused by a miswired AC power cord or equipment connected to the UPS that
is in need of repair. Note: This condition activates the SERVICE alarm, along
with an audible alarm which can be cleared by pressing the MUTE key.
Internal Temperature High (AMB_TEMP_HI) - The internal tempera-
ture high alarm indicates that the temperature of the UPS, measured by
internal circuitry, was found to be too high. This could be caused by a
sustained overload on the output of the UPS, a blocked fan (if equipped), or
operating the unit in an excessively high ambient temperature. To prolong the
life of the batteries and UPS components, determine and correct the cause of
the over-temperature condition.
* * Indicates events that cause the UPS to operate in “LINE FAILURE” mode.