Alarms - Brainchild P41 User Manual

3-5 Alarms

3-5 Alarms
The unit can be configured up to three alarm outputs at OUT2, OUT3
and OUT4. There are 9 types of alarm functions can be selected, and
4 kinds of alarm modes are available for each alarm function.
: A process high alarm is independent of set point. When the
process is higher than the alarm value, a process high alarm occurs,
and the alarm is off as the process value is lower than alarm value -
(minus) alarm hysteresis. Fig. 3.4 shows the process high alarm
operation.
Alarm value
Output 2 on
off
Output 2 on
off
Figure 3.4 Process high alarm 1 operation Figure 3.4 Process high alarm 1 operation
: A Process low alarm is independent of set point. When the
process is lower than the alarm value, a process low alarm occurs, and
the alarm is off as the process value is higher than alarm value + alarm
hysteresis. Fig. 3.5 shows the process low alarm operation.
Output 2 on
off
Output 2 on
off
Figure 3.5 Process low alarm 1 operation Figure 3.5 Process low alarm 1 operation
Process value
Process value
Alarm value
UM0P411A
ASP1
ASP1-A1HY
OUT2=ALM1
OUT2=rAL1
ASP1+A1HY
ASP1
OUT2=ALM1
OUT2=rAL1
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