Micromod Micro-DCI: 53SL5100A Single Loop Controller Instrukcja Użytkownika Strona 108
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Single Loop Process Controller Instruction Manual
100 Instrument Tuning
10.3 Derivative Action (TD)
Derivative action augments proportional action by responding to the rate of change of the process variable.
It is used to make the controller more responsive to sudden process disturbances.
The datapoint to set the Rate parameter is C108; it has a default value of 0 minutes.
The minimum value for derivative action is 0.01 minutes and the maximum time is 8 minutes; 0 is off.
The derivative time in minutes is the amount of time by which the proportional action (or proportional plus
integral action) is advanced.
10.4 Instrument Tuning
Table 10-1 provides summary information for the tuning parameters referenced in the three tuning meth-
ods that follow. The Trial and Error Method (Table 10-2) is usually preferred for processes that respond
quickly, requiring no waiting to determine steady cycling process conditions. The Proportional Cycle
Method (Table 10-3) and Step Response Method (Table 10-4) are expedient procedures for slow pro-
cesses. See Figure 10-1 for a graphical representation of the Step Response Method.
Table 10-1. Summary Information for Tuning Parameters
Abbr. Datapoint Minimum Value Maximum Value Parameter
P.B. C106 2% 1000% Proportional Band
TR C107 0.02 minutes/rep. 200 minutes/rep. Reset
TD C108 0.01 minutes 8 minutes Rate
Table 10-2. Trial and Error Tuning Method
Step Procedure
1
Set the process to approximately normal conditions in Manual mode.
2
Set TR (C107) first to minimum value (0.02 minutes) for several moments, then set it
to the extreme maximum (200 minutes) to lock in a fixed reset value.
3
Set P.B. (C106) to the widest value (1000%).
4
Set TD (C108) to the lowest value (0.01 minutes).
5
Switch to Auto mode.
6
Slowly reduce P.B. (C106) until process cycling starts.
7
Increase TD (C108) slowly until process cycling stops.
8
Reduce P.B. (C106) until process cycling starts again.
9
Further increase TD (C108) until cycling stops again.
10
Repeat Steps 8 and 9 until no improvement can be made when TD is increased.
11
Increase P.B. (C106) to a safe margin approximately 1.5 times the value attained in
Steps 8 through 10.
- INSTRUCTION MANUAL 1
- MicroMod Automation, Inc 2
- TABLE OF CONTENTS 3
- LIST OF FIGURES 6
- LIST OF TABLES 7
- 1.0 Introduction 9
- Introduction 3 11
- 1.2 Model Number Breakdown 12
- 1.3 Specifications 13
- 2.0 Installation 17
- Installation 11 19
- Figure 2-3. Intercase Spacing 20
- 2.4 Connections 21
- 2.5 Grounding 23
- 16 Installation 24
- Installation 17 25
- 18 Installation 26
- 3.0 Front Panel 27
- Front Panel 21 29
- Figure 3-6. Alarm Overlay 30
- 3.3 Front Panel Pushbuttons 31
- 24 Front Panel 32
- 3.3.1 Displaying a Datapoint 36
- 3.3.2 Altering a Datapoint 37
- ∆ = space 38
- 3.3.3 Defaulting the Database 39
- Figure 3-14. The KEY? Prompt 42
- Front Panel 35 43
- C & H 45
- A & Q 45
- TRL-C aborts the operation 46
- 40 Front Panel 48
- 4.0 Configuration Parameters 49
- Figure 4-1. ANIO/1 53
- Figure 4-2 53
- Figure 4-3. CCI0 55
- Figure 4-4. CCO0 55
- CCO L024 0 56
- OINV L288 0 56
- COTAG A280 CCO0 56
- AIX ■ ● ▲ ◆ B335 1 57
- RSW ■ ● ▲ ◆ L106 1 57
- Table 4-11. System Module 61
- Table 5-8. System Module 71
- 6.0 Analog Backup Controller 73
- Table 6-1 75
- Table 6-8. System Module 81
- 7.0 Ratio (PID) Controller 83
- Table 7-1 85
- Table 7-7. System Module 91
- 8.0 Automatic/Manual Station 93
- Table 8-1 95
- Table 8-8. System Module 101
- 9.0 Parameter Display 103
- 96 Parameter Display 104
- 98 Parameter Display 106
- 10.0 Instrument Tuning 107
- 10.3 Derivative Action (TD) 108
- 10.4 Instrument Tuning 108
- 11.0 EASY-TUNE 111
- 11.3 EASY-TUNE Parameters 112
- 108 Easy-Tune 116
- 110 Easy-Tune 118
- 112 Easy-Tune 120
- 12.0 Maintenance 121
- 12.3 Calibration 122
- 12.5 Resetting the Controller 123
- 12.6 Parts List 124
- 12.7 Supplemental Information 124
- Maintenance 117 125
- 118 Maintenance 126
- Maintenance 119 127
- 120 Maintenance 128
- Appendix B: Communications 133
- B.1.1 Configuration 134
- B.1.2 Protocol 135
- B.1.3 Message Types 136
- B 200H 1 138
- L 500H 1 Bit 138
- C 600H 3 138
- Appendix C: Database 141
- Table C-2. Database 142
- CIZ B264 144
- AIX B335 1 145
- ANO0 C000 0 145
- PV C100 0 145
- P or DOWN arrow pushbuttons 146
- 142 Database 150
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