YOKOGAWA Dpharp EJX910A, Руководство пользователя

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CONTENTS
IM 01C25R03-01E
APPENDIX 3. INPUT SELECTOR (IS) BLOCK .............................................. A-21
A3.1 Input Selector Function Block Schematic ......................................... A-21
A3.2
Input Section .................................................................................... A-23
A3.2.1 Mode Handling .......................................................................... A-23
A3.2.2 MIN_GOOD Handling ................................................................ A-23
A3.3 Selection ........................................................................................... A-24
A3.3.1 OP_SELECT Handling .............................................................. A-24
A3.3.2 SELECTION Handling ............................................................... A-25
A3.4 Output Processing ............................................................................ A-31
A3.4.1 Handling of SELECTED ............................................................ A-31
A3.4.2 OUT Processing ........................................................................ A-32
A3.4.3 STATUS_OPTS ......................................................................... A-33
A3.5 List of Input Selector Block Parameters ........................................... A-33
A3.6 Application Example .......................................................................... A-34
APPENDIX 4. ARITHMETIC (AR) BLOCK ...................................................... A-35
A4.1 Arithmetic Function Block Schematic ............................................... A-35
A4.2
Input Section .................................................................................... A-36
A4.2.1 Main Inputs ................................................................................ A-36
A4.2.2 Auxiliary Inputs .......................................................................... A-36
A4.2.3 INPUT_OPTS ............................................................................ A-37
A4.2.4 Relationship between the Main Inputs and PV ......................... A-37
A4.3 Computation Section ......................................................................... A-38
A4.3.1 Computing Equations ................................................................ A-38
A4.3.2 Compensated Values ................................................................ A-38
A4.3.3 Average Calculation .................................................................. A-38
A4.4 Output Section .................................................................................. A-38
A4.4.1 Mode Handling .......................................................................... A-39
A4.4.2 Status Handling ......................................................................... A-39
A4.5 List of the Arithmetic Block Parameters .......................................... A-40
APPENDIX 5. PID BLOCK .............................................................................. A-42
A5.1 Function Diagram .............................................................................. A-42
A5.2 Functions of PID Block ..................................................................... A-42
A5.3 Parameters of PID Block .................................................................. A-43
A5.4 PID Computation Details ................................................................... A-45
A5.4.1 PV-proportional and -derivative Type PID (I-PD) Control
Algorithm ................................................................................... A-45
A5.4.2 PID Control Parameters ............................................................ A-45
A5.5 Control Output ................................................................................... A-45
A5.5.1 Velocity Type Output Action ...................................................... A-45
A5.6 Direction of Control Action ................................................................ A-45
A5.7 Control Action Bypass ....................................................................... A-45
A5.8 Feed-forward ..................................................................................... A-46
A5.9 Block Modes ...................................................................................... A-46
A5.9.1 Mode Transitions ....................................................................... A-46
A5.10 Bumpless Transfer ............................................................................ A-47
A5.11 Setpoint Limiters ............................................................................... A-47
A5.11.1 When PID Block Is in Auto Mode ............................................. A-47
A5.11.2 When PID Block Is in Cas or RCas Mode ................................ A-47
A5.12 External-output Tracking ................................................................... A-47
A5.13 Measured-value Tracking .................................................................. A-47