Figure 4-16: Simulation Switch
P
2
P
ON
1
4.11.6
Process alarms
Process Alarm detection is based on the OUT value. Configure the alarm limits of the
following standard alarms:
•
High (HI_LIM)
•
High high (HI_HI_LIM)
•
Low (LO_LIM)
•
Low low (LO_LO_LIM)
To avoid alarm chattering when the variable is oscillating around the alarm limit, an alarm
hysteresis in percent of the PV span can be set using the ALARM_HYS parameter.
The priority of each alarm is set in the following parameters:
•
HI_PRI
•
HI_HI_PRI
•
LO_PRI
•
LO_LO_PRI
Reference Manual
Configuration
00809-0100-5900
September 2019
Rosemount 5900S Radar Level Gauge
143
Содержание Rosemount 5900S Series
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