Yokogawa EJA115 - Manual (Page 3)

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CONTENTS
IM 01C22T02-01E
6. IN-PROCESS OPERATION .......................................................................... 6-1
6.1 Mode Transition .................................................................................. 6-1
6.2 Generation of Alarm ............................................................................ 6-1
6.2.1 Indication of Alarm ....................................................................... 6-1
6.2.2 Alarms and Events ....................................................................... 6-1
6.3 Simulation Function ............................................................................. 6-2
7. DEVICE STATUS .......................................................................................... 7-1
8. GENERAL SPECIFICATIONS ...................................................................... 8-1
8.1 Standard Specifications ...................................................................... 8-1
8.2 Optional Specifications ........................................................................ 8-2
APPENDIX 1. LIST OF PARAMETERS FOR EACH BLOCK OF THE EJA ... A-1
A1.1 Resource Block ................................................................................... A-1
A1.2 Al Function Block ................................................................................ A-3
A1.3 Transducer Block ................................................................................ A-5
APPENDIX 2. APPLICATION, SETTING AND CHANGE OF BASIC
PARAMETERS ............................................................................................. A-7
A2.1 Applications and Selection of Basic Parameters ................................ A-7
A2.2 Setting and Change of Basic Parameters .......................................... A-8
A2.3 Setting the AI1 Function Block ........................................................... A-8
A2.4 Setting the AI2 Function Block ......................................................... A-10
A2.5 Setting the Transducer Block ............................................................ A-10
APPENDIX 3. OPERATION OF EACH PARAMETER IN FAILURE MODE .... A-12
APPENDIX 4. PID BLOCK .............................................................................. A-14
A4.1 Function Diagram .............................................................................. A-14
A4.2 Functions of PID Bock ...................................................................... A-14
A4.3 Parameters of PID Block .................................................................. A-15
A4.4 PID Computation Details ................................................................... A-17
A4.4.1 PV-proportional and -derivative Type PID (I-PD)
Control Algorithm ........................................................................ A-17
A4.4.2 PID Control Parameters ............................................................. A-17
A4.5 Control Output ................................................................................... A-17
A4.5.1 Velocity Type Output Action ....................................................... A-17
A4.6 Direction of Control Action ................................................................ A-17
A4.7 Control Action Bypass ....................................................................... A-17
A4.8 Feed-forward ..................................................................................... A-18
A4.9 Block Modes ...................................................................................... A-18
A4.9.1 Mode Transitions ....................................................................... A-18
A4.10 Bumpless Transfer ............................................................................ A-19
A4.11 Setpoint Limiters ............................................................................... A-19
A4.11.1 When PID Block Is in Auto Mode ............................................ A-19
A4.11.2 When PID Block Is in Cas or RCas Mode ............................... A-19