Eurotherm 808 - User Manual

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Table of Contents3
Selected Figures4
Tables4
General5
Scope5
Pre-Installation5
Receiving5
Product Code6
Mechanical Installation11
Panel Mounting of Instrument Sleeve11
Panel Cutout11
Multiple Installations12
Installation of Mounting Bracket12
Tightening Mounting Bracket12
Electrical Connections13
General Information and Precautions13
Power and Ground14
Output 116
Output 1 Wiring16
Input19
Thermocouple Input19
Input Wiring19
RTD Input20
Linear Input Option QL20
Linear Process Signals20
Communications Options21
Communications Wiring21
Lockout Override Switch22
Setpoint Programming Option QP23
Operation24
General Organization and Definitions24
Access Levels24
Operator Level24
Operating Modes25
Automatic Operating Mode25
Manual Operating Mode25
Control Types25
Front Panel Identification26
Indications26
Upper Display Functions26
Lower Display Functions26
Front Panels27
Pushbuttons28
Par28
Front Panel Procedures29
Modifying the Setpoint29
Locating and Modifying an Adjustable Parameter29
Additional Procedures for Manual Mode30
Automatic Mode Procedures30
Annunciation30
Ramping and Alarms31
Deviation Alarm31
Ramp-To-Setpoint Operation and Alarms31
Modification of Ramping Parameters32
Ramping Speed32
Target Setpoint32
Normal33
Alarm33
Sensor Break36
Self-Diagnostic36
Overrange Condition36
Underrange Condition36
Configuration and Calibration38
Full List Enable38
Configuration Procedure38
Removal of Instrument from Sleeve38
Parameter Access Assignment50
Parameter Protection50
Calibration and Offset Adjustment51
Access Assignment Procedure51
Offset Adjustment51
Compensation for Thermal Gradient51
Original Factory Calibration Retrieval52
Field Recalibration54
References Requiring Calibration55
Program Segments57
Ramp Segments57
Dwell Segments58
Programmer States58
Idle58
Run59
Hold59
Holdback59
Program Control Methods59
Holdback Examples60
Rear-Terminal Connections61
Program Parameters62
Communications Interface62
Segment Parameters62
Loop Counter63
Program Annunciators63
Remaining Time64
Setpoints64
Enabling Setpoint Programming64
Running a Program64
RUN Characteristics65
Holding a Program65
HOLD Characteristics65
Resetting a Program66
Idle Characteristics66
Ending a Program67
Loss of Power During a Program67
Changing Program Parameters67
Alarms67
Input Adapter69
Linear Input Set-Up and Configuration69
Set-Up and Configuration70
Scaling70
Filter Value71
Self Tuning Option73
Types of Self Tuning73
Tune from Ambient73
Tune from Setpoint73
Parameters and Annunciation74
Conditions for Self Tuning74
Tune on Demand74
Tune on Start-Up75
Start-Up Tune75
Abort Conditions77
Tune at Setpoint77
Start-Up Tune Abort77
Tune at Setpoint Abort77
Specifications79
Absolute Maximum Ratings79
Inputs79
Output Devices80
Control Characteristics80
Automatic Operation80
Communications81
Input Sensors84
Installation of Front Panel Gaskets85
Tuning Tutorial87
PID Control Parameters87
Integral Time Constant88
Adding Integral Action88
Windening Integral Time Constant89
Adding Derivative Action89
Approach Control Parameters90
Procedures90
Cutback Operation90
Procedure for Tuning Heat-Only Systems91
Typical Response Curves91
Systems with Cooling92
Variable Response Tuning Constants92
Tuning Heat/Cool Systems93
Adjusting the Cutback Points93
Use of Automatic Cutback93
Troubleshooting Pid Tuning94
Adjusting On/Off Control94
Instrument Register95
Overcurrent Protection98
Voltage Ratings98
Enclosure of Live Parts98
Wiring98
Grounding99
Supply Isolators99
Temperature Sensor Failure99
Hazardous Atmospheres99

Brand	Eurotherm
Model	808
Category	Controller
Language	English

Eurotherm 808 - User Manual

Table of Contents

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