ABB Ability 800xA Series, Операция

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Loop Definition Templet Appendix A Runtime Templates
218 3BUR002418-600 A
ENGU ALARM DEADBAND Field
This field defines a deadband for the high, low, high high, and low low alarms on the
measured variable. It also becomes the deadband for any setpoint low or setpoint
high alarm for the loop. Valid entry is: a floating point number in the engineering
units of the loop.
ENABLE HIHI ALARMS? Field
This field specifies whether the high high alarm for the measured variable is
enabled. This is a second high alarm level for the measured variable. For example,
the high alarm for a flow is set at 200 GPM and the high high alarm is set at 230
GPM. When the flow becomes equal to or higher than 200 GPM, the high alarm
becomes active. If the flow increases to a rate equal to or larger than 230, both the
high high and the high alarms are active. Valid entries are: YES (enable the alarm),
NO (disable the alarm).
HIHI LIMIT Field
This field defines the high high alarm limit for the measured variable. The alarm
becomes active when the measured variable becomes equal to or greater than the
high high limit and clears when the variable decreases to the value of the high high
limit minus the alarm deadband. Valid entry is: a decimal number.
HIHI ALARM PRIORITY Field
This field specifies the priority level for the high high alarm. Valid entries are: STD
(standard priority), MED (medium priority), HIGH (high priority).
ENABLE LOLO ALARMS? Field
This field specifies whether the low low alarm for the measured variable is enabled.
This is a second low alarm level for the measured variable. For example, the low
alarm for a flow is set at 100 GPM and the low low alarm is set at 80 GPM. When
the flow becomes equal to or less than 100 GPM, the low alarm becomes active. If
the flow decreases to a rate equal to or lower than 80, both the low low and the low
alarm are active. Valid entries are: YES (enable the alarm), NO (disable the alarm).