Emerson Daniel 3410 Series Operation Manual page 109

Operations manual
DAN-20057316
The user-settable data points AlarmTurnOffHysterisisCount and
AlarmTurnOffHysterisisTimeSpan are used to prevent very repetitive alarms from filling
up the alarm log. When an alarm is set AlarmTurnOffHysterisisCount times within
AlarmTurnOffHysteresisTimeSpan seconds, then the alarm is suppressed until the alarm
frequency drops below the specified rate (counts per time span) at which point the next
alarm clearing "unsuppresses" the alarm. The alarm log records indicate when an alarm
suppression is started and ended. The default values are 8 occurrences in 240 seconds.
The data points monitored for the alarm log are as shown in the tables below. Note that
the alarm limits are themselves data points. The user-settable alarm limits are listed by
data point name. Non-settable alarm limits are listed by data point value.
Table 6-24: Alarm log monitored data points
Data point
GainAUp,
GainADn,
GainBUp,
GainBDn,
GainCUp,
GainCDn,
GainDUp,
GainDDn,
GainEUp,
GainEDn,
GainFUp,
GainFDn,
GainGUp,
GainGDn,
GainHUp,
GainHDn
AvgSndVel
SpecFlowPressure
SpecFlowTemperature
LiveFlowPressure
LiveFlowTemperature
AvgFlow
SysTemp
SysVoltage1V
SysVoltage1V2
SysVoltage2V5
SysVoltage3V3
Model 3418 GUSM
Low alarm limit
GainLowLmt
AvgSoundVelLoLmt
LowPressureAlarm
LowTemperatureAlarm
LowPressureAlarm
LowTemperatureAlarm
MeterMaxNegVel
-40°C
0.90V
1.08V
2.225 V
2.937 V
Directory
January 2019
High alarm limit
GainHighLmt
AvgSoundVelHiLmt
HighPressureAlarm
HighTemperatureAlarm
HighPressureAlarm
HighTemperatureAlarm
MeterMaxVel
100°C
1.10V
1.32V
2.775 V
3.663 V
109