Lakeshore 331S - Page 7

Lake Shore Model 331 Temperature Controller User’s Manual
TABLE OF CONTENTS (Continued)
Chapter/Paragraph Title Page
4.5.2 Resistor Sensor Curve Selection ................................................................................................. 4-13
4.5.3 Thermocouple Sensor Curve Selection ....................................................................................... 4-13
4.6 TEMPERATURE CONTROL ........................................................................................................... 4-14
4.6.1 Control Loops ............................................................................................................................... 4-14
4.6.2 Control Modes .............................................................................................................................. 4-15
4.6.3 Tuning Modes .............................................................................................................................. 4-15
4.7 CONTROL SETUP .......................................................................................................................... 4-15
4.8 MANUAL TUNING ........................................................................................................................... 4-17
4.8.1 Manually Setting Proportional (P) ................................................................................................ 4-17
4.8.2 Manually Setting Integral (I) ......................................................................................................... 4-17
4.8.3 Manually Setting Derivative (D) .................................................................................................... 4-18
4.8.4 Setting Manual Heater Power (MHP) Output ............................................................................... 4-18
4.9 AUTOTUNE (CLOSED-LOOP PID CONTROL) .............................................................................. 4-19
4.10 ZONE SETTINGS (CLOSED-LOOP CONTROL) ............................................................................ 4-20
4.11 SETPOINT....................................................................................................................................... 4-23
4.12 RAMP .............................................................................................................................................. 4-24
4.13 HEATER RANGE AND HEATER OFF ............................................................................................ 4-25
4.14 MATH .............................................................................................................................................. 4-26
4.14.1 Max/Min ....................................................................................................................................... 4-26
4.14.2 Linear ........................................................................................................................................... 4-27
4.14.3 Filter ............................................................................................................................................. 4-28
4.15 ALARMS AND RELAYS .................................................................................................................. 4-29
4.15.1 Alarms .......................................................................................................................................... 4-29
4.15.2 Relays .......................................................................................................................................... 4-31
4.16 ANALOG OUTPUT .......................................................................................................................... 4-32
4.16.1 Analog Output In Input Mode ....................................................................................................... 4-32
4.16.2 Analog Output In Manual Mode ................................................................................................... 4-34
4.16.3 Analog Output In Loop 2 Mode .................................................................................................... 4-35
4.17 LOCKING AND UNLOCKING THE KEYPAD .................................................................................. 4-35
4.18 DISPLAY BRIGHTNESS ................................................................................................................. 4-36
4.19 REMOTE/LOCAL ............................................................................................................................ 4-36
4.20 INTERFACE .................................................................................................................................... 4-36
4.21 DEFAULT VALUES ......................................................................................................................... 4-37
5 ADVANCED OPERATION ..................................................................................................................................... 5-1
5.0 GENERAL ......................................................................................................................................... 5-1
5.1 CURVE NUMBERS AND STORAGE ................................................................................................ 5-1
5.1.1 Curve Header Parameters ............................................................................................................. 5-1
5.1.2 Curve Breakpoints ......................................................................................................................... 5-2
5.2 FRONT PANEL CURVE ENTRY OPERATIONS .............................................................................. 5-2
5.2.1 Edit Curve ...................................................................................................................................... 5-4
5.2.1.1 Thermocouple Curve Considerations ......................................................................................... 5-5
5.2.2 Erase Curve ................................................................................................................................... 5-6
5.2.3 Copy Curve .................................................................................................................................... 5-6
5.3 SOFTCAL™ ...................................................................................................................................... 5-7
5.3.1 SoftCal With Silicon Diode Sensors ............................................................................................... 5-7
5.3.2 SoftCal Accuracy With Silicon Diode Sensors ............................................................................... 5-8
5.3.3 SoftCal With Platinum Sensors ...................................................................................................... 5-9
5.3.4 SoftCal Accuracy With Platinum Sensors ...................................................................................... 5-9
5.3.5 SoftCal Calibration Curve Creation .............................................................................................. 5-10
6 COMPUTER INTERFACE OPERATION ................................................................................................................ 6-1
6.0 GENERAL ......................................................................................................................................... 6-1
6.1 IEEE-488 INTERFACE ...................................................................................................................... 6-1
6.1.1 IEEE-488 Interface Parameters ..................................................................................................... 6-2
6.1.2 IEEE-488 Command Structure ....................................................................................................... 6-2
Table of Contents iii