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PowerLogic
TM
Series 800 Power Meter 63230-500-225A2
Chapter 6—Alarms 3/2011
56
Table 6–9: Advanced Alarm Types
Type Description Operation
Boolean
100
Logic
AND
The AND alarm will occur when all of the combined enabled alarms are
true (up to 4). The alarm will drop out when any of the enabled alarms
drops out.
101
Logic
NAND
The NAND alarm will occur when any, but not all, or none of the
combined enabled alarms are true. The alarm will drop out when all of
the enabled alarms drop out, or all are true.
102
Logic
OR
The OR alarm will occur when any of the combined enabled alarms are
true (up to 4). The alarm will drop out when all of the enabled alarms
are false.
103
Logic
NOR
The NOR alarm will occur when none of the combined enabled alarms
are true (up to 4). The alarm will drop out when any of the enabled
alarms are true.
104
Logic
XOR
The XOR alarm will occur when only one of the combined enabled
alarms is true (up to 4). The alarm will drop out when the enabled alarm
drops out or when more than one alarm becomes true.
Disturbance (PM870)
080 Voltage Swell
The voltage swell alarms will occur whenever the continuous rms
calculation is above the pickup setpoint and remains above the pickup
setpoint for the specified number of cycles. When the continuous rms
calculations fall below the dropout setpoint and remain below the
setpoint for the specified number of cycles, the alarm will drop out.
Pickup and dropout setpoints are positive and delays are in cycles.
080 Voltage Sag
The voltage sag alarms will occur whenever the continuous rms
calculation is below the pickup setpoint and remains below the pickup
setpoint for the specified number of cycles. When the continuous rms
calculations rise above the dropout setpoint and remain above the
setpoint for the specified number of cycles, the alarm will drop out.
Pickup and dropout setpoints are positive and delays are in cycles.