Wavelength Electronics LFI-3751, User Manual

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Table of Contents
Chapter 1: Quick Start.................................................................................... 13
Preparing the Temperature Controller for Use ..................................................................15
Nine Steps to Operating the LFI-3751 ................................................................................17
Chapter 2: Front Panel Operation ................................................................. 21
Autotune PID Operation.......................................................................................................23
Theory of Autotune PID ......................................................................................................30
Controlling Temperature with Thermistors ........................................................................35
Controlling Temperature with RTDs ...................................................................................39
Controlling Temperature with an AD590 ............................................................................45
Controlling Temperature with an LM335 ............................................................................48
Controlling Temperature with an LM35 ..............................................................................51
Sensor Error Condition........................................................................................................55
Setting Limit Currents..........................................................................................................56
Setting Temperature Limits .................................................................................................57
Manually Setting the P, I, and D Constants .......................................................................58
Setting Operating Temperature or Resistance ..................................................................60
Enabling Output Current .....................................................................................................61
Measuring Thermoelectric Current and Voltage ................................................................62
Measuring Auxiliary Thermistor Temperature....................................................................63
Setting the RS-232 Address ................................................................................................66
Operating with Resistive Heaters .......................................................................................67
Chapter 3: Rear Panel Operation .................................................................. 69
Connector Pinouts ...............................................................................................................71
BNC Connector.....................................................................................................................73
AC Power...............................................................................................................................74