Watlow CAS Manual do Utilizador descarregar pdf (Página 22)

12 CAS User’s Guide

Installation

1. Place the TB-50 where you will mount it and use a pencil to trace

around the standoffs.

2. Drill and tap #6-32 holes in the locations you marked.

3. Place the TB-50 where you will mount it. Insert the #6 screws in the

standoffs and tighten them.

NOTE

Save the cable tie wraps, ribbon cable, and ribbon cable clamps.

You'll use them when you wire outputs to the TB-50 and when you

connect the ribbon cable.

WARNING

Do not connect power to the CAS now. Test the unit first, as

explained in the Power Wiring and System Test section.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 97 98

User ’s Guide 1
Warranty 2
Contents 3
CAS User’s Guide iii 5
Overview 7
System Diagram 8
Parts List 8
10
Introduction 11
Specifications 13
Digital Inputs 14
Digital Outputs 14
System Digital Outputs 14
Miscellaneous Specifications 15
6 CAS User’s Guide 16
Installation 17
Precautions and Warnings 18
Recommended Tools 19
CAS Mounting Procedure 20
TB-50 Mounting Instructions 21
Grounding 24
Thermocouple Wiring 24
Input Wiring 24
Communications Wiring 25
Wiring: Noise Suppression 26
General Wiring 27
Connections Test 28
Wiring Outputs 29
Using the Cable Tie Wraps 30
Alarm Output Connections 31
Watchdog Timer 31
TB-50 Connections 32
Input Scaling 33
Scaling Values 34
Scaling and Calibration 35
T/C Inputs 36
Connecting Thermocouples 36
Current Inputs 36
Voltage Inputs 37
Unused Inputs 37
Serial Communications 38
JU 1JU 1 39
Configuring Communications 40
Recommended Wire Gauges 41
32 CAS User’s Guide 42
Using the CAS 43
Front Panel 44
Single Channel Display 46
Job Display 47
Change Setpoint 48
Acknowledging an Alarm 49
Resetting an Alarm 49
40 CAS User’s Guide 50
How to Enter the Setup Menus 51
How to Edit a Menu 51
CAS Menus 52
Setup Global Parameters Menu 53
Save Setup to Job 54
Job Select Inputs 54
Job Select Input Polarity 55
Startup Alarm Delay 55
Keyboard Lock Status 56
Scanner Address 56
Communications Error Checking 56
Communications Baud Rate 57
Allen-Bradley Protocol 57
AC Line Frequency 57
Digital Output Polarity 58
EPROM Information 58
Setup Channel Inputs 59
Pulse Sample Time 60
Channel Name 60
Input Units 61
Input Reading Offset 61
Linear Scaling Menus 62
Variable 63
InputR eading 63
Display Format 64
High Process Value 64
High Reading 65
Low Process Value 65
Low Reading 66
Input Filter 66
Setup Channel Alarms 67
Alarm Delay 69
High Process Alarm Setpoint 69
High Process Alarm Type 69
Deviation Alarm Value 70
High Deviation Alarm Type 70
Low Deviation Alarm Type 71
Low Process Alarm Setpoint 72
Low Process Alarm Type 72
Alarm Deadband 73
Manual I/O Test 75
Digital Output Test 76
Keypad Test 76
Troubleshooting 77
Manual System Reset 78
Returning the Unit 78
TB-50 Test 79
Checking an Analog Input 79
Checking Digital I/O 79
Digital Input Test 80
Computer Problems 81
Ground Loops 82
Software Problems 82
User-Written Software 82
Changing the EPROM 83
Appendix: Linear Scaling 85
Examples 85
Example 2 86
Example 3 87
78 CAS User’s Guide 88
Glossary 89
88 CAS User’s Guide 98

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