Chapter 6—Alarms 63230-300-212
Alarm Conditions and Alar m Numbers April 2001
©20 01 Schneider Electric All Rights Reser ved
96
Digital
01 End of incrementalenergy interval End Inc Enr Int N/A ——070
02 End of power deman d interval EndPower Dm dI nt N/A ——070
03 End of 1-second u pdate cycle End 1s Cyc N/A ——070
04 End of 100ms u pdate cycle End 100ms Cyc N/A ——070
05 Power up/Reset Pwr Up/Reset N/A ——070
06-40 Reserved for custom alarms —————
Tabl e 6–4: Alarm Types
Type Description Operation
StandardSpeed
010 Over Value Alarm
Ifthe test register valueexceeds the setpointlong enough to satisfythe pickup delay period,the
alarmcondition willbe true. When thevalue in the testregister fallsbelow the dropoutsetpoint long
enough to satisfy the dropou t delay period, the alarm will dro pout. Pickup and dropout setpoin ts
are positive, delays are in seconds.
011 OverPower Alarm
Ifthe absolutevalue in the test registerexceedsthe setpoint long enoughto satisfy the pickupdelay
period, the alarm conditi on will be true. When the value in the test register falls be lowth ed ropout
setpointlongenough to satisfyt hedropout delay period,the alarm will dropout.Pickup anddropout
setpoints are positive, de lays are in seconds.
012 OverReverse PowerAlarm
Ifthe absolutevalue in the test registerexceedsthe setpoint long enoughto satisfy the pickupdelay
period, the alarm conditi on will be true. When the value in the test register falls be lowth ed ropout
setpoint long enough to sa tisfy the dropout delay per iod, the alarm will dropou t. This alarm will only
hold true for reverse power conditio ns. Positive power values will not cause the alar m to occur.
Pickup and dropout setpoint s are positive, delays are in seconds.
020 UnderValue Alarm
Ifthe test register valueis below the setpointlong enough to satisfy thepickup delay period,the
alarm condition will be tr ue. When the value in the test registe rr ises above the dropout setpoint
long enough to satisfy the dro pout delay period, the alarm wi ll dropout. Pickup and dropout
setpoints are positive, de lays are in seconds.
021 UnderPower Alarm
Ifthe absolutevalue in the testregister is belowthe setpointlong enough tosatisfy the pickupdelay
period,the alarm conditionwill be true.When the value in thetest register risesabove the dropout
setpointlongenough to satisfyt hedropout delay period,the alarm will dropout.Pickup anddropout
setpoints are positive, de lays are in seconds.
051 PhaseReversal
Thep hase reversal alarm wi ll occur whenever the phase vol tage waveform rotation d iffers from the
default phase rotation. Th e ABC phase rotation is assumed to be normal. If a CBA phase rotation
is normal, the user should re program the circuit monitor’s phase rotation ABCto CBA phase
rotation. The pickup and drop out setpoints and delays for phase reversa l do not apply.
052 Phase Loss, Voltage
The phase loss voltage a larm will occur w hen any one or two phas e voltages (but not al l) fall to the
pickup value and remain at or below th ep ickup value long enough to satisfy t he specified pickup
delay.Whenall of the phases remainat or above the dropout valuefor the dropoutdelay period, or
when all of the phas es drop below the sp ecified phase loss pickup value, the alarm w ill dropout.
Pickup and dropout setpoint s are positive, delays are in seconds.
053 PhaseLoss, Current
Thephase loss currentalarm will occur when anyone or two phase currents(but not all)fall to the
pickup value and remain at or below th ep ickup value long enough to satisfy t he specified pickup
delay.Whenall of the phases remainat or above the dropout valuefor the dropoutdelay period, or
when all of the phas es drop below the sp ecified phase loss pickup value, the alarm w ill dropout.
Pickup and dropout setpoint s are positive, delays are in seconds.
Tabl e 6–3: List of Default Alarmsby Alarm Number
Alarm
Number AlarmDescription Abbreviated
DisplayName Tes t
Register Units Scale
Group Alarm
Type
Alarm Typesare desc ribed in Table6–4 on page 9 6.