Omega DP41-S - Figure 10-7 al CNF Hysteresis

10
Setpoints/Alarms
10-6
Figure 10-7 Illustrates the Alarm configuration for hysteresis.
Figure 10-7. AL CNF Hysteresis
2. “ALC.2=0” turns the Alarm 1 (Setpoint 3) open-collector output ON
when Setpoint 3 is active.
“ALC.2=1” turns it OFF.
3. “ALC.3=0” compares the Alarm 1 (Setpoint 3) level to the
UNFILTERED measurements.
“ALC.3=1” compares the Alarm 1 (Setpoint 3) level to the
FILTERED measurements.
4. “ALC.4=0” makes Alarm 2 (Setpoint 4) active ABOVE the Setpoint
value.
“ALC.4=1” makes Alarm 2 (Setpoint 4) active BELOW the Setpoint
value.
When Alarm 2 (Setpoint 4) is assigned to place a band about the Setpoint 4
level (by setting “ALF.1=3”, described in Section 10.6), “ALC.4=0” makes
Alarm 2 (Setpoint 4) active ABOVE and BELOW the band (OUTSIDE the
band), with the chosen hysteresis for Alarm 2 (Setpoint 4) now inside the
band. If “ALC.4=1”, Alarm 2 (Setpoint 4) is active INSIDE the band, with the
chosen hysteresis for Alarm 2 (Setpoint 4) now outside the band.
5. “ALC.5=0” turns the Alarm 2 (Setpoint 4) open-collector output ON
when Setpoint 1 is active.
“ALC.5=1” turns it OFF.
6. “ALC.6=0” compares the Alarm 2 (Setpoint 4) level to the
UNFILTERED measurements.
“ALC.6=1” compares the Alarm 2 (Setpoint 4) level to the
FILTERED measurements.
SP1 SP1
ALF .1=3
ALC .1=0
ALF .1=3
ALC .1=1
SP3 = ±5
ALARM ON
DEAD BAND