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(2) Adjusting PID content
Refer to page 2-6, the block diagram of PID control selection, using the following procedure
to activate the PID control and then adjust it while monitoring the response.
( I )
Enable the PID control function (Setting Sn-19 = 09, and if any constant Sn-15 ~ 18
setting value is 66, then none of control terminals 5 ~ 8 can be closed).
( II )
Increase the proportional gain P (Bn-14) as far as possible without creating oscillation.
( III )
Reduce in integral time I (Bn-15) as far as possible without creating oscillation.
( IV )
Increase the differential time D (Bn-16) as far as possible without creating oscillation.
First set the individual PID control constants, and then make fine adjustments.
•
Reducing Overshooting
If overshooting occurs, shorten the derivative time D (Bn-16) and lengthen the integral
time I (Bn-15)
•
Rapidly Stabilizing Control Status
To rapidly stabilize the control conditions even when overshooting occurs, shorten the
integral time I (Bn-15) and lengthen the derivative time D (Bn-16)
App-6
PA 7300
APPENDIX
After adjustment
Time
Response
Before adjustment
After adjustment
Time
Response
Before adjustment
After adjustment
Time
Response
Before adjustment
After adjustment
Time
Response
Before adjustment
Summary of Contents for PA7300 Series
Page 9: ......
Page 10: ...PART I INSTALLATION MANUAL ...
Page 44: ...PART II OPERATION MANUAL ...
Page 107: ...2 57 PA 7300 PART II OPERATION MANUAL REDUCTION COEFFICIENT ...
Page 116: ...2 66 PA 7300 PART II OPERATION MANUAL 2 5 Monitoring Peramiters UN ...
Page 117: ...2 67 PA 7300 PART II OPERATION MANUAL ...
Page 150: ...i PA 7300 INSTRUCTION MANUAL ...
Page 151: ...i PA 7300 INSTRUCTION MANUAL ...
Page 152: ...i PA 7300 INSTRUCTION MANUAL ...
Page 153: ...i PA 7300 INSTRUCTION MANUAL ...
Page 154: ...5100 N IH 35 Round Rock Texas 78681 USA 1 800 279 4007 www tecowestinghouse com ...