Lakeshore 340 - Page 6

Lake Shore Model 340 Temperature Controller User’s Manual
ii Table of Contents
TABLE OF CONTENTS (Continued)
Chapter/Paragraph Title Page
2.6.2 Integral (I)....................................................................................................................................... 2-9
2.6.3 Derivative (D) ................................................................................................................................. 2-9
2.6.4 Manual Heater Output.................................................................................................................. 2-11
2.7 MANUAL TUNING ........................................................................................................................... 2-11
2.7.1 Setting Heater Range................................................................................................................... 2-11
2.7.2 Tuning Proportional...................................................................................................................... 2-11
2.7.3 Tuning Integral ............................................................................................................................. 2-12
2.7.4 Tuning Derivative ......................................................................................................................... 2-12
2.8 AUTOTUNING................................................................................................................................. 2-13
2.9 ZONE TUNING................................................................................................................................ 2-14
3 INSTRUMENT HARDWARE INSTALLATION ....................................................................................................... 3-1
3.0 GENERAL ......................................................................................................................................... 3-1
3.1 RECEIVING THE MODEL 340 .......................................................................................................... 3-1
3.1.1 Inspection and Unpacking.............................................................................................................. 3-1
3.1.2 Repackaging For Shipment............................................................................................................ 3-1
3.1.3 Safety Summary............................................................................................................................. 3-2
3.1.4 Safety Symbols .............................................................................................................................. 3-2
3.1.5 Handling Liquid Helium and Liquid Nitrogen .................................................................................. 3-3
3.2 REAR PANEL DEFINITION............................................................................................................... 3-4
3.3 LINE INPUT ASSEMBLY................................................................................................................... 3-5
3.3.1 Line Voltage and Fuse Verification................................................................................................. 3-5
3.3.2 Line Voltage Selection ................................................................................................................... 3-5
3.3.3 Fuse Replacement ......................................................................................................................... 3-6
3.3.4 Power Cord .................................................................................................................................... 3-6
3.3.5 Power Switch ................................................................................................................................. 3-6
3.4 STANDARD SENSOR INPUTS......................................................................................................... 3-6
3.4.1 Sensor Input Connector and Pinout ............................................................................................... 3-6
3.4.2 Sensor Lead Cable ........................................................................................................................ 3-7
3.4.3 Grounding and Shielding Sensor Leads......................................................................................... 3-7
3.4.4 Sensor Polarity............................................................................................................................... 3-7
3.4.5 Four-Lead Sensor Measurement ................................................................................................... 3-7
3.4.6 Two-Lead Sensor Measurement.................................................................................................... 3-8
3.4.7 Lowering Measurement Noise........................................................................................................ 3-8
3.5 HEATER OUTPUT SETUP ............................................................................................................... 3-8
3.5.1 Loop 1 Output ................................................................................................................................ 3-8
3.5.2 Heater Output Connector for Loop 1 .............................................................................................. 3-8
3.5.3 Heater Output Wiring for Loop 1 .................................................................................................... 3-9
3.5.4 Heater Protection and Fuse for Loop 1 .......................................................................................... 3-9
3.5.5 Loop 1 Heater Noise ...................................................................................................................... 3-9
3.5.6 Model 3003 Heater Output Conditioner.......................................................................................... 3-9
3.5.7 Loop 2 Output .............................................................................................................................. 3-10
3.5.8 Loop 2 Output Resistance............................................................................................................ 3-10
3.5.9 Loop 2 Output Connector............................................................................................................. 3-10
3.5.10 Loop 2 Heater Protection ............................................................................................................. 3-10
3.5.11 Boosting the Output Power .......................................................................................................... 3-11
3.6 ANALOG OUTPUTS........................................................................................................................ 3-11
3.7 DIGITAL I/O..................................................................................................................................... 3-12
3.8 RELAYS .......................................................................................................................................... 3-12
4 FRONT PANEL OPERATION ................................................................................................................................ 4-1
4.0 GENERAL ......................................................................................................................................... 4-1
4.1 TURNING POWER ON ..................................................................................................................... 4-1
4.2 DISPLAY FORMATS ......................................................................................................................... 4-1
4.2.1 Normal Display............................................................................................................................... 4-2
4.2.2 Setting Displays ............................................................................................................................. 4-2
4.2.3 Data Entry Displays........................................................................................................................ 4-2
4.2.4 Error Displays................................................................................................................................. 4-2
4.3 KEYPAD DESCRIPTION................................................................................................................... 4-2
4.4 KEYPAD NAVIGATION ..................................................................................................................... 4-3
4.4.1 Entering Settings............................................................................................................................ 4-3
4.4.2 Direct Settings................................................................................................................................ 4-3