Watlow MLS Manuel d'utilisateur télécharger pdf (Page 120)

108 MLS User’s Guide

Tuning and Control

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User’s Guide 1
Warranty 2
Addendum for MLS User’s 3
Guide (3.6) 3
Mounting Environment 4
Contents 7
Contents MLS User’s Guide 10
MLS User’s Guide Contents 11
Overview 13
System Diagram 14
Parts List 14
4 MLS User’s Guide 16
Introduction 17
Specifications 19
RTD Ranges 20
Miscellaneous Specifications 20
Digital Inputs 20
Digital Outputs 21
Standard Digital Outputs 21
System Digital Outputs 21
Miscellaneous Specifications 22
Expanded Parts List 23
Front Panel Description 24
Installation 27
Read This Before Installation 28
Recommended Tools 29
Mounting the MLS-PM 30
MLS-PM Mounting Steps 31
Mounting the MLS-AIM 32
Mounting Steps 33
Mounting the RTB 34
Mounting the MLS-PS 35
Wiring Your System 36
Wiring Recommendations 37
Cable Recommendations 38
Noise Suppression 38
Symptoms of RFI 38
Avoiding RFI 38
Testing Connections 40
Testing Your System 42
Outputs 43
Ribbon Cable Recommendations 44
Using the Cable Tie Wraps 44
System safe 45
(RTB pin 6) 45
RTB Connections 46
AIM Communications Failure 47
Input Wiring Recommendations 49
Input Scaling 49
Scaling Values 49
Input Calibration 50
T/C Inputs 51
Connecting Thermocouples 52
RTD Inputs 52
Current Inputs 53
Voltage Inputs 53
Unused Inputs 53
Communications 54
Recommended Wire Gauges 57
46 MLS User’s Guide 58
Using the MLS 59
Front Panel 60
Front Panel Keys 61
Yes (Up) 61
No (Down) 61
Man/Auto 62
Ramp/Soak 62
Alarm Ack 62
Displays 63
(blank) (blank) 64
Interpreting Alarm Display 65
Acknowledging an Alarm 66
Operator Menus 68
MAN/AUTO CONTROL 69
Automatically Tuning a Loop 70
How to enter the Setup menus? 71
How to edit a menu? 71
Setup Global Parameters Menu 73
Save to Job 74
Load from Job 74
Job Select Inputs 75
Controller Address 78
Communications Error Checking 78
Setup Loop Input 81
Input Type 82
Input Reading Offset 84
Linear Scaling Menus 84
}Line a r in put ty pe 85
Display Format 86
High Process Value 86
High Reading 87
Low Process Value 87
Low Reading 87
Input Filter 88
Setup Loop Control Parameters 89
Heat/Cool Control PB 90
Heat/Cool Control TI 90
Heat/Cool Control TD 90
Heat/Cool Output Filter 91
Heat/Cool Spread 91
Setup Loop Outputs 92
MLS User’s Guide 81 93
Setup Loop Outputs? 93
Heat or Cool Output Type 94
SDAC Menus 95
SDAC High Value 96
SDAC Low Value 96
Heat/Cool Output Action 96
Heat/Cool Output Limit 97
Heat/Cool Output Limit Time 97
Heat/Cool Output Override 97
Calculated by PID 98
Setup Loop Alarms 99
Alarm Types 100
Failed Sensor Alarms 100
Global Alarms 100
Process Alarms 100
• Alarm deadband 101
• Loop alarm delay 101
Alarm Delay 102
High Process Alarm Setpoint 103
High Process Alarm Type 103
Deviation Band Value 104
High Deviation Alarm Type 104
Low Deviation Alarm Type 105
Low Process Alarm Setpoint 106
Low Process Alarm Type 106
Alarm Deadband 107
Loop Alarm Delay 107
Manual I/O Test 108
Digital Input Testing 109
Using This Menu 109
Keypad Test 109
Test Digital Output 109
Toggle Digital Output 110
Tuning and Control 111
Proportional Control 112
Digital Output Control Forms 114
Time Proportioning (TP) 114
Analog Outputs 114
Output Digital Filter 115
Reverse and Direct Action 115
General PID Constants 118
MLS User’s Guide 107 119
108 MLS User’s Guide 120
Tuning and Control 120
Troubleshooting 121
MLS-PM Has No Power 122
Keys Don't Respond 123
Checking Analog Inputs 123
Checking PID Control Outputs 124
Checking Digital I/O 124
Computer Problems 125
Serial Interface Problems 125
Communications Problems 126
Ground Loops 126
Software Problems 127
User-Written Software 127
Changing the EPROM 128
118 MLS User’s Guide 130
Linear Scaling Examples 131
Glossary 133
Glossary MLS User’s Guide 142

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Watlow MLS Manuel d'utilisateur Page 120

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