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MANTRA-4Loop Advanced PID Loop
In this example MANTRA-4Loop is controling the set-point by controling two different system
Inputs; one for heating and one for cooling.
The first change from 52 to 25 is done through a cooling process. You can see the blue line in the bottom graph change, so that the green line (the output temp.) is smoothly changed to the new set-point. 
The second change from 25 to 55 requires the heating unit to change the temp. of the
output. This requires a quick rapid change which is then modified to a low temp. to result in the gentle slop of the actual output - green line.
The MANTRA system makes tuning and control of these multi-input changes easy and more
effective the even PLC control.
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