Brainchild P91 User Manual

If is selected, then when power is restored the set point starts at
the current process value, and then runs to the target set point of the
active segment. This choice provides a smoother recovery. The two
diagrams below illustrate the respective responses, Fig. 4.5 if power
fails during a dwell segment and Fig. 4.6 if it fails during a ramp segment.
Set pointSet point
Time
t1
Segment dwell
time = t1+t2
Segment dwell
time
= t1+t2
power offpower off
power onpower on
t2
Ramp
Segment
Dwell Segment
Figure 4.5 Recovery from PV at dwell segment
Figure 4.5 Recovery from PV at dwell segment
Figure 4.6 Recovery from PV at ramp segmentFigure 4.6 Recovery from PV at ramp segment
Set pointSet point
Time
power onpower on
power offpower off
Ramp Segment Dwell Segment
Target Set pointTarget Set point
If is selected, then when power is restored the profiler is disabled
and it enters static mode, and SP1 is selected for control set point.
If is selected, then when power is restored the profiler is disabled
and it enters OFF mode, all the control outputs as well as alarms and
events are off.
UM0P411A
72

Brainchild P91 Specifications

General

Brand	Brainchild
Model	P91
Category	Controller
Language	English