Yokogawa EJX930A - Manual (Page 6)

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IM 01C25R03-01E
A4.5 List of the Arithmetic Block Parameters ..................................................... A4-6
Appendix 5. PID Block ...................................................................................A5-1
A5.1 Function Diagram .......................................................................................... A5-1
A5.2 Functions of PID Block .................................................................................. A5-1
A5.3 Parameters of PID Block ............................................................................... A5-2
A5.4 PID Computation Details ............................................................................... A5-4
A5.4.1 PV-proportional and -derivative Type PID (I-PD) Control Algorithm
.........................................................................................................A5-4
A5.4.2 PID Control Parameters ...................................................................A5-4
A5.5 Control Output ................................................................................................ A5-4
A5.5.1
Velocity Type Output Action .............................................................A5-4
A5.6 Direction of Control Action ........................................................................... A5-4
A5.7 Control Action Bypass .................................................................................. A5-5
A5.8 Feed-forward .................................................................................................. A5-5
A5.9 Block Modes ................................................................................................... A5-5
A5.9.1
Mode Transitions ..............................................................................A5-5
A5.10 Bumpless Transfer ......................................................................................... A5-6
A5.11 Setpoint Limiters ............................................................................................ A5-6
A5.11.1 When PID Block Is in Auto Mode .....................................................A5-6
A5.11.2 When PID Block Is in Cas or RCas Mode .......................................A5-6
A5.12 External-output Tracking .............................................................................. A5-7
A5.13 Measured-value Tracking .............................................................................. A5-7
A5.14 Initialization and Manual Fallback (IMan) .................................................... A5-7
A5.15 Manual Fallback ............................................................................................. A5-8
A5.16 Auto Fallback .................................................................................................. A5-8
A5.17 Mode Shedding upon Computer Failure ..................................................... A5-8
A5.17.1 SHED_OPT......................................................................................A5-8
A5.18 Alarms ............................................................................................................. A5-9
A5.18.1 Block Alarm (BLOCK_ALM) .............................................................A5-9
A5.18.2 Process Alarms ................................................................................A5-9
A5.19 Example of Block Connections .................................................................... A5-9
A5.20 View Object for PID Function Block ........................................................... A5-10
Appendix 6. Link Master Functions .............................................................A6-1
A6.1 Link Active Scheduler.................................................................................... A6-1
A6.2 Link Master ..................................................................................................... A6-1
A6.3 Transfer of LAS .............................................................................................. A6-2
A6.4 LM Functions .................................................................................................. A6-3
A6.5 LM Parameters ............................................................................................... A6-4
A6.5.1
LM Parameter List ............................................................................A6-4
A6.5.2 Descriptions for LM Parameters ......................................................A6-6
A6.6 FAQs ................................................................................................................ A6-8