Lakeshore 340 - Page 7

Lake Shore Model 340 Temperature Controller User’s Manual
Table of Contents iii
TABLE OF CONTENTS (Continued)
Chapter/Paragraph Title Page
4.4.3 Using Setting Screens ................................................................................................................... 4-4
4.4.4 Data Entry Screens........................................................................................................................ 4-4
4.4.5 The Help Key ................................................................................................................................. 4-4
4.4.6 Keypad Time-out............................................................................................................................ 4-4
4.4.7 Key Definitions............................................................................................................................... 4-5
4.5 CHANGING DISPLAY FORMAT ....................................................................................................... 4-6
4.5.1 Number of Readings Displayed ..................................................................................................... 4-6
4.5.2 Sensor Input................................................................................................................................... 4-6
4.5.3 Reading Source and Display Units ................................................................................................ 4-7
4.5.4 Control Loop Display...................................................................................................................... 4-7
4.5.5 Large Heater Display ..................................................................................................................... 4-7
4.5.6 Heater Output Display Units........................................................................................................... 4-8
4.5.7 Display Contrast............................................................................................................................. 4-8
4.5.8 Display Backlight On/Off ................................................................................................................ 4-8
4.5.9 Locking the Keypad ....................................................................................................................... 4-8
4.6 DEFAULT VALUES ........................................................................................................................... 4-8
5 SENSOR INPUT AND TEMPERATURE MEASUREMENT OPERATION ............................................................. 5-1
5.0 GENERAL ......................................................................................................................................... 5-1
5.1 SENSOR INPUT SETUP................................................................................................................... 5-1
5.1.1 Sensor Type................................................................................................................................... 5-1
5.1.2 Voltage Excitation (Current Autorange) ......................................................................................... 5-2
5.1.3 Thermal EMF Compensation with Voltage Excitation .................................................................... 5-2
5.1.4 Special Sensor Type Configuration................................................................................................ 5-2
5.1.5 Turning an Input Off ....................................................................................................................... 5-3
5.2 SELECTING A TEMPERATURE RESPONSE CURVE .................................................................... 5-3
5.3 FILTER AND MATH .......................................................................................................................... 5-4
5.3.1 Filter............................................................................................................................................... 5-4
5.3.2 Max/Min ......................................................................................................................................... 5-5
5.3.3 Linear Equation.............................................................................................................................. 5-6
5.4 SCANNER SUPPORT....................................................................................................................... 5-6
5.4.1 Scan Modes ................................................................................................................................... 5-6
5.4.2 Input Setup with a Scan Mode Active ............................................................................................ 5-7
5.4.3 Manual Scanning ........................................................................................................................... 5-7
5.4.4 Auto Scanning................................................................................................................................ 5-8
5.4.5 Slave Scanning .............................................................................................................................. 5-8
6 TEMPERATURE CONTROL OPERATION............................................................................................................ 6-1
6.0 GENERAL ......................................................................................................................................... 6-1
6.1 CONTROL LOOPS............................................................................................................................ 6-1
6.1.1 Control Loops on the Normal Display ............................................................................................ 6-1
6.1.2 Loop Indication on the Normal Display .......................................................................................... 6-1
6.1.3 Loop Indication on Setting Screens ............................................................................................... 6-1
6.1.4 Control Output Display................................................................................................................... 6-2
6.2 CONTROL LOOP ENABLE............................................................................................................... 6-2
6.3 CONTROL LOOP FILTER................................................................................................................. 6-2
6.4 CONTROL CHANNEL....................................................................................................................... 6-3
6.5 CONTROL MODES........................................................................................................................... 6-3
6.6 MANUAL SETTING OF PID CONTROL PARAMETERS .................................................................. 6-4
6.6.1 Proportional (P).............................................................................................................................. 6-4
6.6.2 Integral (I)....................................................................................................................................... 6-4
6.6.3 Derivative (D) ................................................................................................................................. 6-4
6.6.4 Manual Output ............................................................................................................................... 6-4
6.7 SELECTING AN AUTOTUNE CONTROL MODE ............................................................................. 6-4
6.8 ZONE CONTROL DATA ENTRY ...................................................................................................... 6-5
6.9 USING OPEN LOOP CONTROL....................................................................................................... 6-7
6.10 SETTING A SETPOINT AND SETPOINT UNITS.............................................................................. 6-7
6.11 SETPOINT RAMPING....................................................................................................................... 6-8
6.12 CONTROL OUTPUT ......................................................................................................................... 6-8
6.12.1 Heater Output Parameter Settings and Heater Range................................................................... 6-8
6.12.2 Analog Output as Loop 2 Control Output ..................................................................................... 6-10