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Watlow CAS User Manual

Page 5

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Contents

CAS User’s Guide iii

Display Format ............................................................. 54
High Process Value....................................................... 54
Input Scaling High Reading.......................................... 55
Input Scaling Low Process Value ................................. 55
Input Scaling Low Reading .......................................... 56
Input Filter .................................................................... 56

Setup Channel Alarms ........................................................ 57

High Process Alarm Setpoint........................................ 59
High Process Alarm Type............................................. 59
High Process Alarm Output Number............................ 60
Deviation Alarm Value ................................................. 60
High Deviation Alarm Type ......................................... 60
High Deviation Alarm Output Number ........................ 61
Low Deviation Alarm Type .......................................... 61
Low Deviation Alarm Output Number ......................... 62
Low Process Alarm Setpoint ....................................... 62
Low Process Alarm Type ............................................. 62
Low Process Alarm Output Number ............................ 63
Alarm Deadband ........................................................... 63
Alarm Delay.................................................................. 64

Manual I/O Test .................................................................. 65

Digital Input Testing ..................................................... 65
Digital Output Selection ............................................... 65
Digital Output Test ....................................................... 66
Keypad Test .................................................................. 66

Troubleshooting..........................................................67

Manual System Reset.................................................... 68
Returning the Unit ........................................................ 68

Troubleshooting Stand-Alone Systems .............................. 69

Checking an Analog Input ............................................ 69
Checking Digital I/O..................................................... 69

Checking Computer Supervised Systems ........................... 71

Computer Problems ...................................................... 71
Software Problems ........................................................ 72
Changing the EPROM .................................................. 73

Appendix: Linear Scaling Examples.........................75

Example 1 ........................................................................... 75
Example 2 ........................................................................... 76
Example 3 ........................................................................... 77

Glossary ......................................................................79