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Watlow 8LS Controller User Manual

Page 6

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iv 8LS User’s Guide

Setting Up and Tuning PID Loops ........................................80
General PID Constants by Application..................................82

Troubleshooting

85

Stand Alone Systems .............................................................85

Checking Control Outputs ...............................................85
Checking Digital I/O........................................................85

Computer Supervised Systems ..............................................86

Computer Problems .........................................................86
Computer Software ..........................................................86
Communications Problems ..............................................87
Serial Interface .................................................................87

Appendix A: Ramp Soak

89

Introduction............................................................................89

R/S Features .....................................................................89
Specifications...................................................................90

Configuring Ramp/Soak ........................................................90

Setting the R/S Time Base ...............................................91
Editing R/S Parameters ....................................................91
Choosing a Profile to Edit................................................91
Copying the Setup from Another Profile .........................92
Editing the Tolerance Alarm Time ..................................92
Editing the Ready Setpoint ..............................................93
Editing the Ready Event States........................................93
Choosing an External Reset Input ...................................94
Editing a Segment ............................................................94
Setting Segment Time......................................................94
Setting a Segment Setpoint ..............................................95
Configuring Segment Events ...........................................95
Editing Event Outputs......................................................96
Changing Event States .....................................................96
Editing Segment Triggers ................................................96
Assigning an Input to a Trigger .......................................97
Changing a Trigger’s True State......................................97
Latching or Unlatching a Trigger ....................................97
Setting Segment Tolerance ..............................................98
Ending a Profile ...............................................................98
Repeating a Profile...........................................................98

Using Ramp/Soak ..................................................................99

Assigning a Profile to a Loop...........................................99
Running a Profile .............................................................100
Ramp/Soak Displays........................................................101