Watlow CLS Bedienungsanleitung Seite 169

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Appendix B: Enhanced Process Control
161
Now press the "Back" key several times until the normal loop display
appears. The setpoint of loop 2 will now be equal to SP of Loop 1 plus
50 ºF.
To complete the Differential Control setup, Loop 1 and Loop 2 must be
configured for inputs, outputs, and alarms. Please consult The SETUP
Section of the manual for information on PID loop setup.
Enter the control ratio, which is the mul-
tiple applied to the master Process Vari-
able. In this example the ration is 1.0.
Press Enter.
Enter the setpoint differential (or offset).
For this example we have an offset of
+50.
Press Enter.
Display User Input
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUT%
02 RATIO CONTROL
CTRL: RATIO? 1.0
LOOP PROCESS UNITS
ALARM SETPOINT STATUS OUT%
02 RATIO CONTROL
SP DIFF.? 50
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