Lakeshore 340 Manuals

Manuals and User Guides for Lakeshore 340. We have 2 Lakeshore 340 manuals available for free PDF download: User Manual, Installation Instructions

Lakeshore 340 User Manual

Lakeshore 340 User Manual (178 pages)

Brand: Lakeshore | Category: Temperature Controller | Size: 1.61 MB

Table of Contents

Declaration of Conformity
3
Table of Contents
5
Introduction
13
- General
  13
  - Model 340 Front Panel
    13
- Temperature Control System
  14
- Temperature Control System with the Model 340
  14
- Cooling Source
  14
- Typical Temperature Control System with Model 340
  14
- Feedback
  15
- Control Equation
  15
- Heating
  15
- Model 340 Features
  15
- Configurable Inputs
  15
- Input Isolation
  16
- Input Reading Capability
  16
Model 340 Temperature Controller Block Diagram
16
- Temperature Response Curves and Calcurves
  17
- Softcal
  17
- Configurable Heater Output
  17
- Heater Output Protection
  17
- Second Control Loop
  17
- Autotune
  17
- Setpoint Ramping and Zones
  17
- Internal Programming
  18
- Math
  18
- Alarms, Analog Outputs, and Digital I/O
  18
- Memory Card
  18
- Computer Interface
  18
Comparison of Control Loops 1 and 2
18
Model 340 Sensor Performance Chart
22
Cooling System Design
23
- General
  23
- Temperature Sensor Selection
  23
- Temperature Range
  23
- Sensor Sensitivity
  23
- Environmental Conditions
  24
- Measurement Accuracy
  24
- Sensor Package
  24
- Calibrated Sensors
  24
- Traditional Calibration
  24
- Softcal
  25
Silicon Diode Sensor Calibrations and Calcurve
25
- Standard Curves
  26
- Calcurve
  26
- Sensor Installation
  26
- Mounting Materials
  26
- Sensor Location
  26
- Thermal Conductivity
  27
- Contact Area
  27
- Contact Pressure
  27
Typical Sensor Installation in a Mechanical Refrigerator
27
- Lead Wire
  28
- Lead Soldering
  28
- Heat Sinking Leads
  28
- Thermal Radiation
  28
- Heater Selection and Installation
  28
- Heater Resistance and Power
  28
- Heater Location
  29
- Heater Types
  29
- Heater Wiring
  29
- Considerations for Good Control
  29
- Thermal Conductivity
  29
- Thermal Lag
  30
- Two-Sensor Approach
  30
- Thermal Mass
  30
- System Nonlinearity
  30
- Pid Control
  31
- Proportional (P)
  31
- Integral (I)
  31
- Derivative (D)
  31
  - Examples of PID Control
    32
- Manual Heater Output
  33
- Manual Tuning
  33
- Setting Heater Range
  33
- Tuning Proportional
  33
- Tuning Integral
  34
- Tuning Derivative
  34
- Autotuning
  35
- Zone Tuning
  36
- General
  37
- Receiving the Model 340
  37
- Inspection and Unpacking
  37
- Repackaging for Shipment
  37
- Safety Summary
  38
- Safety Symbols
  38
- Handling Liquid Helium and Liquid Nitrogen
  39
  - Typical Cryogenic Storage Dewar
    39
  - Comparison of Liquid Helium to Liquid Nitrogen
    39
- Rear Panel Definition
  40
  - Model 340 Rear Panel
    40
- Line Input Assembly
  41
- Line Voltage and Fuse Verification
  41
- Line Voltage Selection
  41
AC Line Input Definitions
41
- Fuse Replacement
  42
- Power Cord
  42
- Power Switch
  42
- Standard Sensor Inputs
  42
- Sensor Input Connector and Pinout
  42
  - Power Fuse Access
    42
  - Sensor INPUT a and B Connector Definitions
    42
- Sensor Lead Cable
  43
- Grounding and Shielding Sensor Leads
  43
- Sensor Polarity
  43
- Four-Lead Sensor Measurement
  43
- Two-Lead Sensor Measurement
  44
- Lowering Measurement Noise
  44
- Heater Output Setup
  44
- Loop 1 Output
  44
- Heater Output Connector for Loop 1
  44
- Heater Output Wiring for Loop 1
  45
- Heater Protection and Fuse for Loop 1
  45
- Loop 1 Heater Noise
  45
- Model 3003 Heater Output Conditioner
  45
- Loop 2 Output
  46
- Loop 2 Output Resistance
  46
- Loop 2 Output Connector
  46
- Loop 2 Heater Protection
  46
- Model 3003 Heater Output Conditioner
  46
- Boosting the Output Power
  47
- Analog Outputs
  47
ANALOG out 1 and 2 BNC Rear Panel Connector Details
47
- Digital I/O
  48
- Relays
  48
Front Panel Operation
49
- General
  49
- Turning Power on
  49
- Display Formats
  49
  - Model 340 Front Panel
    49
- Normal Display
  50
- Setting Displays
  50
- Data Entry Displays
  50
- Error Displays
  50
- Keypad Description
  50
- Keypad Navigation
  51
- Direct Settings
  51
- Using Setting Screens
  52
- Data Entry Screens
  52
- The Help Key
  52
- Keypad Time-Out
  52
- Key Definitions
  53
- Changing Display Format
  54
- Number of Readings Displayed
  54
- Sensor Input
  54
- Reading Source and Display Units
  55
- Control Loop Display
  55
- Large Heater Display
  55
- Heater Output Display Units
  56
- Display Contrast
  56
- Display Backlight On/Off
  56
- Locking the Keypad
  56
- Default Values
  56
Sensor Input and Temperature Measurement Operation
57
- General
  57
- Sensor Input Setup
  57
- Sensor Type
  57
- Sensor Types Recognized by the Model 340
  57
- Voltage Excitation (Current Autorange)
  58
- Thermal EMF Compensation with Voltage Excitation
  58
- Special Sensor Type Configuration
  58
- Turning an Input off
  59
- Selecting a Temperature Response Curve
  59
- Special Sensor Type Configuration
  59
- Filter and Math
  60
- Filter
  60
- Standard Curve Table
  60
- Max/Min
  61
  - Data Flow
    61
- Linear Equation
  62
- Scanner Support
  62
- Scan Modes
  62
- Linear Equation Configuration
  62
- Input Setup with a Scan Mode Active
  63
- Manual Scanning
  63
- Auto Scanning
  64
- Slave Scanning
  64
Temperature Control Operation
65
- General
  65
- Control Loops
  65
- Control Loops on the Normal Display
  65
- Loop Indication on the Normal Display
  65
- Loop Indication on Setting Screens
  65
- Control Output Display
  66
- Control Loop Enable
  66
- Control Loop Filter
  66
- Control Channel
  67
- Control Modes
  67
- Control Mode Description
  67
- Manual Setting of Pid Control Parameters
  68
- Proportional (P)
  68
- Integral (I)
  68
- Derivative (D)
  68
- Manual Output
  68
- Selecting an Autotune Control Mode
  68
- Zone Control Data Entry
  69
  - Record of Zone Settings
    70
- Using Open Loop Control
  71
- Setting a Setpoint and Setpoint Units
  71
- Setpoint Ramping
  72
- Control Output
  72
- Heater Output Parameter Settings and Heater Range
  72
Full Scale Heater Power at Typical Resistance
73
- Analog Output as Loop 2 Control Output
  74
- Control Output Limits
  75
- Setpoint Limit
  75
- Control Output Slope Limit
  75
- Heater Range Limit
  75
Analog Output, Digital I/O. Alarms, and Relay Operation
77
- General
  77
- Analog Outputs
  77
- Input Mode for Analog Output
  78
- Example of Low and High Parameter Setting
  78
- Loop 2 Mode for Analog Output 2
  78
- Manual Mode Operation of the Analog Outputs
  79
- Digital Inputs and Outputs (I/O)
  79
- Digital Output Modes
  79
- Digital Outputs in Alarm Mode
  79
- Digital Outputs in Scanner Mode
  79
- Digital Outputs in Manual Mode
  80
- Digital Input Modes
  80
- Input Alarms
  80
- Enabling an Input Alarm
  80
- Selecting an Input Alarm Source
  81
- Input Alarm High and Low Settings
  81
- Input Alarm Latching
  81
- Input Alarm Relay Setup
  81
- Input Alarm Reset
  82
- Audible Beeper
  82
- High and Low Relays
  82
- Selecting a Relay Mode
  82
- Manually Setting a Relay
  82
Instrument Programming
83
- General
  83
- Curve Entry from the Front Panel
  83
- Curve Numbers and Storage
  83
- Front Panel Curve Entry Operations
  83
- Front Panel Curve Edit
  84
- Recommended Curve Parameters
  84
- Front Panel Curve Copy
  85
- Front Panel Curve Erase
  85
- Softcal
  86
- Softcal and Silicon Diode Sensors
  86
Softcal Temperature Ranges for Silicon Diode Sensors
86
Softcal Temperature Ranges for Platinum Sensors
87
- Creating a Softcal Calibration Curve
  88
- Internal Programming
  88
- Program Instructions
  88
- Internal Programming Operations
  92
- Enter or Edit an Internal Program
  92
- Saving a Program
  93
- Summary of Key Operation
  93
- Example of an Internal Program (Example 1)
  93
- Example of Using Subprograms (Example 2)
  94
- Run an Internal Program
  94
- Stop a Running Program
  94
  - Sample Program #1
    94
- Clear Internal Program Memory
  95
- Data Card Operation
  95
- Data Logging to a Data Card
  95
- Storage Capability for a 1 MB Data Card
  95
- Reading from a Data Card
  98
- Writing to a Data Card
  98
- Erasing a Data Card
  98
Remote Operation
99
- General
  99
- Ieee-488 Interface
  99
- IEEE-488 Interface Settings
  99
- IEEE-488 Command Structure
  99
- Status Registers
  101
- IEEE Interface Example Programs
  102
- IEEE-488 Interface Board Installation for Visual Basic Program
  102
  - GPIB Setting Configuration
    103
DEV 12 Device Template Configuration
103
- Visual Basic IEEE-488 Interface Program Setup
  104
IEEE-488 Interface Program Control Properties
105
Visual Basic IEEE-488 Interface Program
106
- IEEE-488 Interface Board Installation for Quick Basic Program
  107
- Quick Basic Program
  107
Typical National Instruments GPIB Configuration from IBCONF.EXE
108
Quick Basic IEEE-488 Interface Program
109
- Program Operation
  110
- Troubleshooting
  110
- Serial Interface Overview
  111
- Changing Baud Rate
  111
- Physical Connection
  111
  - Serial Interface Connections
    111
- Hardware Support
  112
- Character Format
  112
- Message Strings
  112
- Serial Interface Specifications
  112
- Message Flow Control
  113
- Serial Interface Example Programs
  113
- Visual Basic Serial Interface Program Setup
  114
Serial Interface Program Control Properties
115
- Visual Basic Serial Interface Program
  116
- Quick Basic Serial Interface Program Setup
  117
- Program Operation
  118
- Troubleshooting
  118
- Ieee-488/Serial Interface Commands
  119
Options and Accessories
141
- General
  141
- Options
  141
- Accessories
  141
Model 2001 RJ-11 Cable Assembly
143
Model 2003 RJ-11 to DE-9 Adapter
143
Optional Model 2002 RJ-11 to DB-25 Adapter
144
Model 3012 Rack-Mount Kit
144
- Model Dual Standard 3462 Input Option Card
  145
- Field Installation
  145
Cover and Option Plate Screws
145
Model 340 Mounting Holes and Analog Option Plug
146
- Operation
  147
- Specifications
  147
- Model 3464 Dual Thermocouple Input Option Card
  147
- General
  147
Model 340 Rear Panel with Model 3462 Option Card Installed
147
- Option Installation
  148
- Sensor Installation
  148
- Sensor Input Terminals
  148
Thermocouple Polarity
148
- Measurement Point Connection
  149
- Grounding and Shielding
  149
- Operation
  149
- Default Settings
  149
- Input Selection
  149
- Displaying Option Readings
  149
- Curve Selection
  150
- Curve Data Format
  150
- Range Selection
  150
- Room Temperature Compensation
  150
Model 340 Rear Panel with Model 3464 Option Card Installed
148
Standard Thermocouple Curves
150
- Computer Interface Commands
  151
- Thermocouple Temperature Curves
  152
- Specifications
  152
- Model 3465 Single Capacitance Input Option Card
  152
- Option Installation
  152
- Sensor Installation
  152
- Sensor Input Connector
  152
- Measurement Point Connection
  152
- Grounding and Shielding
  152
- Operation
  153
- Input Selection
  153
- Displaying Option Readings
  153
- Curve Selection
  153
- Range Selection
  153
- Temperature Coefficient
  153
- Control Channel Changes
  153
- Computer Interface Commands
  153
- Specifications
  153
- Model 3468 Eight-Channel Input Option Card
  154
- General
  154
- Option Installation
  154
- Sensor Installation
  154
- Sensor Input Connector
  154
- Sensor Input Cabling
  154
- Reading Rate
  154
- Operation
  155
- General Operation
  155
- Input Setup
  155
- Temperature Control
  155
- Computer Interface Commands
  156
- Specifications
  156
Service
159
- General
  159
- General Maintenance Precautions
  159
- Electrostatic Discharge
  159
- General Maintenance
  160
- Rear Panel Connector Definitions
  160
SERIAL I/O RJ-11 Rear Panel Connector Details
160
DIGITAL I/O DA-15 Rear Panel Connector Details
161
RELAYS lo and HI Rear Panel Connector Details
161
ANALOG out 1 and 2 BNC Rear Panel Connector Details
162
SENSOR INPUT a and B Rear Panel Connector Details
162
HEATER OUTPUT Rear Panel Connector Details
162
- IEEE-488 Interface Connector
  163
IEEE-488 Rear Panel Connector Details
163
- Serial Interface Cable and Adapters
  164
Model 2001 RJ-11 Cable Assembly Wiring
164
Model 2003 RJ-11 to DE-9 Adapter Wiring Details
164
- Top of Enclosure Remove and Replace Procedure
  165
- Eprom and Novram Replacement
  165
  - Error Messages
    166
Location of Internal Components
166
- Firmware IC Replacement
  167
- Updating the Master Firmware from a Data Card
  169
  - A1.0 General
    171
  - Appendix A -Curve Tables
    171

Lakeshore 340 Installation Instructions

Lakeshore 340 Installation Instructions (2 pages)

Input Option Card

Brand: Lakeshore | Category: Measuring Instruments | Size: 0.14 MB

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