Micromod MOD: 1800P - MOD 30ML Identity Module (Version 2) Manual de usuario Pagina 35
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Continuous Control Functions
PID CONTROL BLOCK
2-29
77
Setpoint Restart Value
(SPRVI)........................................................................................CWR
The setpoint restart value is a floating-point input used to determine the active setpoint when
the PID block performs its first RUN cycle.
NONE Attribute is not configured into the database.
value Fixed floating point value is Setpoint Restart value.
LSP Any floating-point variable is Setpoint Restart value.
78
Feedforward Compensation Input
(FFCI)........................................................................CWR
The feedforward compensation input is a floating-point value that is added or multiplied to the
denormalized AUTO output of the PID algorithm.
NONE Attribute is not configured into the database.
value Fixed floating point value is Feedforward Compensation Input value.
LSP Any floating-point variable is Feedforward Compensation Input value.
79
External Feedback Input
(EFBI)........................................................................................CWR
The external feedback input is used with the standard integral in the PID algorithm to provide
an anti reset-windup capability. If the external feedback input is not used, the limited output
value is used.
NONE Attribute is not configured into the database.
value Fixed floating point value is External Feedback Input value.
LSP Any floating-point variable is External Feedback Input value.
80
Track Command Input
(TCI) .............................................................................................CWR
The track command input is used to put the PID loop in track. If the track command input
exists then the output track input must exist.
NONE Attribute is not configured into the database.
value Fixed discrete value is Track Command Input value.
LSP Usually Track Status of slave controller in a cascade loop is discrete
variable is Track Command Input value.
81
Setpoint Track Input
(SPTI) ..............................................................................................CWR
The setpoint track input is copied to the active setpoint when the setpoint mode is set to
TRACK. This input must exist if setpoint tracking is enabled.
NONE Attribute is not configured into the database.
value Fixed floating point value is Setpoint Track Input value.
LSP Any floating-point variable is Setpoint Track Input value.
82
Output Track Input
(OPTI) ................................................................................................CWR
The output track input is copied to the active output when the output mode is set to TRACK.
This input must exist if the track command input exists.
NONE Attribute is not configured into the database.
value Fixed floating point value is Output Track Input value.
LSP Any floating-point variable is Output Track Input value.
- Data Base Reference 1
- MicroMod Automation, Inc 2
- CONTENTS 3
- ILLUSTRATIONS 4
- INTRODUCTION 5
- 1.4 RELATED DOCUMENTATION 6
- 1.5 VERSION IDENTIFICATION 6
- 2.1 GENERAL 7
- 2.2 PID CONTROL BLOCK (PID) 8
- PID Controller Block 9
- Continuous Control Functions 10
- PID CONTROL BLOCK 10
- OPCERRUQ 17
- OPCERRAQ 17
- Attribute 18
- Control Algorithm Type 30
- Manual Reset Balance Type 31
- Gain Base Value 31
- Reset Rate Base Value 31
- Preact Time Base Value 32
- Manual Reset Initial Value 32
- Manual Reset Quality 32
- Control Modes Allowed 32
- Control Mode 33
- Control Mode Status Quality 33
- Control Mode Command 33
- Setpoint Mode Restart Value 34
- Output Mode Restart Value 34
- Control Mode Restart Value 34
- Process Variable Input 34
- Dead Time Compensation Input 34
- Gain Modifier 36
- Reset Rate Modifier 36
- Preact Time Modifier 36
- Remote Setpoint Bias Input 36
- Mode Model 38
- Input Filter Type 38
- Input Filter Time Constant 39
- 2.2.4 PID Block Events 40
- RAMP SOAK BLOCK (RSK) 41
- DATA BASE PARAMETERS 41
- RAMP SOAK BLOCK 42
- 3.3 RSK BLOCK PARAMETERS 45
- Block Length 50
- Result Quality 53
- State A Quality 53
- State B Quality 53
- State C Quality 53
- Cycle Number Quality 55
- Mode Quality 55
- 3.5 RAMP/SOAK BLOCK EVENTS 60
- APPENDIX A 61
- PID BLOCK CROSS REFERENCE 61
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