Rockwell Automation Electronic Temperature Controller User Manual

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Electronic Temperature Controller

Bulletin No. 900-TC16

User Manual

Page 2

Important User Information

Solid state equipment has operational characteristics differing from those of electromechanical equipment. "Safety Guidelines for the Application, Installation and Maintenance of Solid State Controls" (Publication SGI-1.1 available from your local Rockwell Automation Sales Office or online at http://www.ab.com/ manuals/gi) describes some important differences between solid state equipment and hard-wired electromechanical devices. Because of this difference, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or part, without written permission of Rockwell Automation, Inc. is prohibited.

Throughout this manual we use notes to make you aware of safety considerations:

ATTENTION

Identifies information about practices or circumstances that can lead to personal injury or death, property damage, or economic loss

Attention statements help you to:

• identify a hazard

• avoid a hazard

• recognize the consequences

IMPORTANT

Identifies information that is critical for successful application and understanding of the product.

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European Communities (EC) Directive Compliance

If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been designed and tested to meet the following directives.

EMC Directive

This product is tested to meet the Council Directive 89/336/EC Electromagnetic Compatibility (EMC) by applying the following standards, in whole or in part, documented in a technical construction file:

EN 61326 EMC Requirements — Electrical Equipment for Control, Measurement and Laboratory Use

This product is intended for use in an industrial environment.

Low Voltage Directive

This product is tested to meet Council Directive 73/23/EEC Low Voltage, by applying the safety requirements of EN 61010-1 Safety Requirements for Electrical Equipment for Control, Measurement and Laboratory Use — General Requirements. For specific information, see the appropriate sections in this publication, as well as the Allen-Bradley publication Industrial Automation Wiring and Grounding Guidelines For Noise Immunity, Publication 1770-4.1.

This equipment is classified as open equipment and must be mounted in an enclosure during operation to provide safety protection.

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Notes:

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Table of Contents

Preface

Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P-i

Safety Signal Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P-i

Conventions Used in This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . .P-i

Meanings of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P-i

How to Read Display Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . P-ii

Bulletin 900-TC16 Overview Chapter 1

I/O Configuration and Main Functions . . . . . . . . . . . . . . . . . . . . . . . 1-1

I/O Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Main Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Hardware Versions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

Front Panel and LED Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Display Meanings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

Basic Keypad Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

Preparations Chapter 2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Approximate Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

Panel Cutout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

System Wiring and Installation Guidelines. . . . . . . . . . . . . . . . . . 2-3

Setting Up the Controller with the Optional Units . . . . . . . . . . . 2-5

Panel Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7

Bulletin 900-TC16 Wiring Terminals . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Terminal Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-9

Wiring Guidelines and Precautions. . . . . . . . . . . . . . . . . . . . . . . . 2-9

Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-10

Configuration and Basic Operation Chapter 3

How Function Groups Are Configured and Operating the Keys

on the Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

Selecting Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Changing Parameters and Loading Values into

Controller Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Communications Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Setting up Communications Parameter Data . . . . . . . . . . . . . . . . 3-6

Initial Setup Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

Configuring the Input Type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Input Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Selecting °C/°F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Temperature Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9

Configuring the SP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Changing the SP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

Selecting PID Control or ON/OFF Control . . . . . . . . . . . . . . . . . . 3-11

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

2-PID Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-11

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ON/OFF Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Configuring the Output Parameters . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Control Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-12

Direct/Reverse Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-13

Executing the ON/OFF Control Method . . . . . . . . . . . . . . . . . . . . 3-15

ON/OFF Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

ON/OFF Control Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

ON/OFF Control Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17

Determining PID Constants (AT, ST, Manual Setup) . . . . . . . . . . . 3-18

AT (Auto-Tuning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-18

ST (Self-Tuning). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20

Conditions that Start Self-Tuning (ST). . . . . . . . . . . . . . . . . . . . 3-21

Self-Tuning (ST) Stable Range . . . . . . . . . . . . . . . . . . . . . . . . . . 3-22

Manual PID Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-23

Alarm Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

Alarm Types. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-25

Alarm Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-27

Heater Burnout Alarm (HBA). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

HBA Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-29

HBA Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

HBA Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-30

How to Calculate Heater Current Detection Values . . . . . . . . . 3-33

System Setup/Operational Considerations. . . . . . . . . . . . . . . . . . . . 3-35

Parameter Adjustments and Application Considerations

Chapter 4

Shifting Input Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

1-Point (Uniform) Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2-Point Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

How to Calculate Input Shift Values (2-Point Shift) . . . . . . . . . . 4-3

Using the 1-Point Shift Method . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

Using the 2-Point Shift Method . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Alarm Functions/Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Alarm Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Standby Alarm Sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

Alarm Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Alarm Output Close in Alarm or Open in Alarm . . . . . . . . . . . . 4-9

Configuration of Scaling Upper and Lower Limits

(0…50 mV Analog Input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

Executing the Heating and Cooling Control Mode . . . . . . . . . . . . . 4-12

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

Setup of Heating and Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

Using the Event Input Feature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

Setting Event Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-16

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Multi-SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

Selecting Multi-SP by Keypad Operation. . . . . . . . . . . . . . . . . . 4-18

Multi-SP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-19

Executing RUN/STOP Controller Mode Change. . . . . . . . . . . 4-21

Configuring the Upper and Lower Set Point (SP) Limit Values . . . 4-22

Set Point Limitter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-22

Set Point Limit Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-23

Executing the SP Ramp Function

(Limiting the SP Rate of Change) . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

SP Ramp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-25

SP Ramp Application Considerations. . . . . . . . . . . . . . . . . . . . . 4-25

To Move to the Advanced Setting Function Group . . . . . . . . . . . . 4-26

Using the Key Protect Function Group . . . . . . . . . . . . . . . . . . . . . . 4-28

Key Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-28

Parameter Functions and Definitions

Chapter 5

Conventions Used in this Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

About the Parameter Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

About the Order in which Parameters are Described

in This Chapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Protect Function Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

Operation/Adjustment Protection, Initial Setting/Communications

Protection, Configuration Change Protection . . . . . . . . . . . . . . . 5-2

Operation Function Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3

PV (Process Value) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

PV/SP (Process Value/Set Point) . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Multi-SP (Set Point 0…3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6

Set Point during SP Ramp. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

Heater Current Value Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7

RUN/STOP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8

Alarm Value 1, Alarm Value 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

Upper-Limit Alarm Value 1, Lower-Limit Alarm Value 1. . . . . 5-10

Upper-Limit Alarm Value 2, Lower-Limit Alarm Value 2. . . . . 5-10

MV Monitor (OUT1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

MV Monitor (OUT2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-12

Adjustment Function Group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-13

AT Execute/Cancel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Communications Writing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-15

Heater Current Value Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Heater Burnout Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16

Set Point 0, Set Point 1, Set Point 2, Set Point 3 . . . . . . . . . . . . 5-17

Temperature Input Shift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18

Upper-Limit Temperature Input Shift Value,

Lower-Limit Temperature Input Shift Value . . . . . . . . . . . . . . . 5-19

Proportional Band, Integral Time, Derivative Time . . . . . . . . . 5-20

Cooling Coefficient . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

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Dead Band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21

Manual Reset Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-22

Hysteresis (OUT1), Hysteresis (OUT2) . . . . . . . . . . . . . . . . . . . 5-22

Initial Setting Function Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-23

Input Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26

Scaling Upper Limit, Scaling Lower Limit, Decimal Point . . . . 5-26

°C/°F Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27

Set Point Upper Limit, Set Point Lower Limit. . . . . . . . . . . . . . 5-28

PID/ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-28

Standard/Heating and Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29

ST Self-Tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30

Control Period (OUT1), Control Period (OUT2) . . . . . . . . . . . 5-30

Direct/Reverse Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31

Alarm Type for Alarm 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

Alarm Type for Alarm 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-32

Advanced Setting Function Group . . . . . . . . . . . . . . . . . . . . . . . . . . 5-35

Parameter Initialize . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37

Number of Multi-SP Uses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-37

Event Input Assignment 1,Event Input Assignment 2 . . . . . . . 5-38

Multi-SP Uses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-39

SP Ramp Set Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-40

Standby Sequence Reset Method . . . . . . . . . . . . . . . . . . . . . . . . 5-40

Alarm 1 Open in Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-41

Alarm 1 Hysteresis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-42

Alarm 2 Open in Alarm. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-43

Alarm 2 Hysteresis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-44

HBA (Heater Burnout Alarm) Used. . . . . . . . . . . . . . . . . . . . . . 5-45

Heater Burnout Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-45

Heater Burnout Hysteresis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46

ST (Self-Tuning) Stable Range . . . . . . . . . . . . . . . . . . . . . . . . . . 5-46

MV (Manipulated Variable) Upper Limit,

MV (Manipulated Variable) Lower Limit . . . . . . . . . . . . . . . . . . 5-48

Input Digital Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49

Additional PV Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50

Manipulated Variable Display . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-50

Automatic Return of Display Mode . . . . . . . . . . . . . . . . . . . . . . 5-50

Alarm 1 Latch, Alarm 2 Latch. . . . . . . . . . . . . . . . . . . . . . . . . . . 5-51

Protect Function Group Move Time . . . . . . . . . . . . . . . . . . . . . 5-52

Output Input Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-52

Cold Junction Compensation Method . . . . . . . . . . . . . . . . . . . . 5-53

MB Command Logic Switching . . . . . . . . . . . . . . . . . . . . . . . . . 5-53

PV Color Change. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-53

PV Stable Range Band. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-55

Communications Setting Function Group . . . . . . . . . . . . . . . . . . . . 5-55

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Communications Unit No., Baud Rate,

Communications Data Length, Communications Stop Bit,

Communications Parity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-56

Troubleshooting and Error Indication

Chapter 6

Input Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

Operation at Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Memory Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

Operation at Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

HB Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Operation at Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Display Range Over . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Current Value Exceeds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Meaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

Appendix A

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1

Heater Burnout Alarm (HBA) when Option Unit is Mounted

(Cat. No. 900-TC16EIM or 900-TC16COM) . . . . . . . . . . . . . . . A-3

Current Transformer (CT). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3

Approximate External Dimensions . . . . . . . . . . . . . . . . . . . . . . . A-4

Sensor Input Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5

Control Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6

Appendix B

Parameter Operations List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1

Setup Function Groups Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-5

Parameter Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-7

Calibration Appendix C

Parameter Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1

User Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Calibrating Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Registering Calibration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

Calibrating Thermocouples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-3

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Page 10

toc-vi Table of Contents

Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-4

Calibrating Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-7

Calibrating Platinum Resistance Thermometers. . . . . . . . . . . . . . . . . C-9

Checking Indication Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-11

Thermocouple or Non-Contact Temperature Sensor . . . . . . . . C-11

Platinum Resistance Thermometer. . . . . . . . . . . . . . . . . . . . . . . C-12

Analog Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-12

Glossary Appendix D

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Page 11

Preface

Safety Precautions

Conventions Used in This

Safety Signal Words

This manual uses the following signal word to mark safety precautions for the Bulletin 900-TC16.

These precautions provide important information for the safe application of the Bulletin 900-TC16 Temperature Controller. You must make sure to follow the instructions provided in all safety precautions.

ATTENTION

Identifies information about practices or circumstances that can lead to personal injury or death, property damage or economic loss

Meanings of Abbreviations

Manual

The following abbreviations are used in parameter names, figures, and in text explanations. These abbreviations mean the following:

Table P.A

Symbol Term

PV Process value SP Set point AT Auto-tuning ST Self-tuning EU Engineering unit ➊

➊ “EU” stands for Engineering Unit. EU is used as the minimum unit for engineering units such as °C, m, and g.

The size of EU varies according to the input type selected. For example, when the configured input temperature range is –200…+1300°C, 1 EU is 1°C, and when the configured input temperature range is –20.0…+500.0°C, 1 EU is 0.1°C. In the case of analog input, the size of EU varies according to the decimal point position of the scaling setting, and 1 EU becomes the minimum scaling unit.

Note: For additional definitions, see Appendix D, Glossary.

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Page 12

P-ii Preface

How to Read Display Symbols

The following table shows the relationship between the symbols exhibited on the controller’s front panel displays to alphabet characters.

Table P.B

ABCDE FGHI JKL MNOPQRST UVWXYZ

abcdefghijklmnopqrstuvwxyz

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Page 13

Bulletin 900-TC16 Overview

Chapter

I/O Configuration and Main Functions

Temperature input/ analog input

*HBA

CT input

Event input 2ch

SP input from external digital switch function and Run/Stop function

I/O Configuration

Figure 1.1

Controller

Control output 1

Control output 2

Heating and cooling

Standard

Alarm 2

Alarm 1

Input error

HBA

OUT1

OUT2

ALM2

ALM1

Control output 1

Alarm output 2

Alarm output 1

Communications function

“*” marked items are options.

The Bulletin 900-TC16 allows the user to carry out the following:

•

Select from thermocouple and platinum RTD temperature sensors, plus non-contact temperature sensor and analog input

•

Select heating and cooling control in addition to standard control

•

Select AT (auto-tuning) and ST (self-tuning) as tuning functions

• Use multi-SP and the RUN/STOP function according to event input

• Use the HBA (heater burnout alarm) function (when optional circuit

board Cat. No. 900-TC16EIM or 900-TC16COM is fitted)

1-1 Publication 900-UM001C-EN-E - January 2004

Page 14

1-2 Bulletin 900-TC16 Overview

• Use the communications function (when optional communications

board Cat. No. 900-TC16COM or 900-TC16ACCOM is fitted)

• Calibrate sensor input

• The Bulletin 900-TC16 features a watertight construction (NEMA4X:

equivalent to IP66).

• The Bulletin 900-TC16 conforms to cULus/IEC safety standards and

EMC standards.

Main Functions

The following introduces the main functions of the Bulletin 900-TC16. For details on each function and how to use the functions, see Chapter 3 and onward.

• Input Sensor Types — The following input sensors can be connected

for temperature input:

– Thermocouple: K, J, T, E, L, U, N, R, S, B – Non-contact temperature sensor type: K (10…70°C), K

(60…120°C), K (115…165°C), K (160…260°C)

– Platinum resistance thermometer: Pt100, JPt100

– Analog input: 0…50 mV

• Control Output — The control output type is either an On/Off

electro-mechanical relay, On/Off voltage (solid-state relay) output, or analog current (DC: 4...20 mA) output depending on the model of Bulletin 900-TC16.

If you select the heating and cooling control method on the Bulletin 900-TC16, alarm 2 output is used as the cooling output. Use alarm 1 if an alarm is needed in heating and cooling control.

• Alarms — Alarms are supported on the Bulletin 900-TC16. You can

configure the alarm type and alarm value, or upper- and lower-limit alarms.

Publication 900-UM001C-EN-E - January 2004

If necessary, a more comprehensive alarm function can be achieved by setting the Standby Sequence, Alarm Hysteresis, Close in Alarm/Open in Alarm, and Alarm Latch ON/OFF parameters.

When the input error output is set to ON, alarm output 1 turns ON when an input error occurs.

Page 15

Bulletin 900-TC16 Overview 1-3

• Control Adjustment — Optimum PID constants can be configured

easily by AT (auto-tuning) and ST (self-tuning) functions.

• Event Input — When the optional event input unit Cat.

No. 900-TC16EIM is mounted in the Bulletin 900-TC16, the following functions can be achieved by event input:

Multiple set point selection (multi-SP max. 4 points) and RUN/STOP mode change.

• HBA — The heater burnout alarm (HBA) function is supported when

the optional unit (Cat. No. 900-TC16EIM or 900-TC16COM) is mounted in the Bulletin 900-TC16.

• Communications Function — Communications to a personal computer

(PC) are supported when the optional communications unit Cat. No. 900-TC16COM or 900-TC16ACCOM is mounted in the Bulletin 900-TC16. Communications are carried out over the RS-485 network architecture. Note: The PC must have 900Builder software installed.

Hardware Versions

Table 1.A

DIN Size

(Dimensions)

(mm)

1/16 DIN

(48 x 48 x 78)

Power Supply

Voltage

100…240V AC 2

24V AC/DC 2

The following table provides the list of controller base features with associated cat. nos.

No. of

Alarms

Supported

Control Output Type Controller Cat. No.

with Thermocouple

Support

Relay 900-TC16RTZ25 900-TC16RPZ25

Voltage output (for driving SSR) 900-TC16VTZ25 900-TC16VPZ25

4...20 mA analog 900-TC16ACTZ25 900-TC16ACPZ25 Relay 900-TC16RTU25 900-TC16RPU25

Voltage output (for driving SSR) 900-TC16VTU25 900-TC16VPU25

4...20 mA analog 900-TC16ACTU25 900-TC16ACPU25

Controller Cat. No. with Platinum RTD

Support

Note: To implement the Heater Burnout Alarm (HBA) function, a current transformer (Cat. No. 900-CT1 or 900-CT2) is required. A current transformer is not provided with the controller.

Note: When the heating and cooling function or the heater burnout alarm is used, one of the alarm outputs will be disabled for each function used.

Note: The heater burnout alarm is available by mounting the 900-TC16EIM or the 900-TC16COM for the 900-TC16RTZ25, RPZ25, VTZ25, VPZ25, RTU25, RPU25, VTU25, or VPU25.

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1-4 Bulletin 900-TC16 Overview

Front Panel and LED Displays

Figure 1.2

perational

ndicato

Function Group key

Display Meanings

Mode key Down key

Temperature unit

900-TC16

Displays/Indicators

No. 1 display

No. 2 display

Operations keys

Up key

• No. 1 Display — Displays the process value or parameter type.

• No. 2 Display — Displays the set point, manipulated variable, or

configured value (setup) of the parameter.

• Operational Indicators

– ALM1 (alarm 1)

Lights when alarm 1 output is ON.

– ALM2 (alarm 2)

Lights when alarm 2 output is ON.

– HB (heater burnout alarm display)

Lights when a heater burnout is detected.

– OUT1, OUT2 (control output 1, control output 2)

This operational indicator lights when control output 1 and/or control output 2 are ON. Note, however, that OUT1 is out at all times when control output 1 is current output.

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Bulletin 900-TC16 Overview 1-5

– STOP

Lights when control of the Bulletin 900-TC16 has been stopped. During control, this indicator lights when an event or the RUN/STOP function has become stopped. Otherwise, this indicator is out.

– CMW (communications writing control)

Lights when Communications Writing parameter/function is “enabled” and is out when it is “disabled.”

• Temperature Unit — Temperature is displayed when the configured unit used is set to a temperature (°C or °F). Indication is determined by the currently selected “Temperature Unit” parameter value. When this parameter is configured for °C, c is displayed, and when configured for °F, f is displayed.

Basic Keypad Functions

The following describes the basic functions of the front panel keys.

• function group key — Press this key to select the desired function groups. The function groups are selected in the following order: “Operation function group” ←→ “Adjustment function group”, “Initial Setting function group” ←→ “Communications Setting function group”.

• M mode key — Press this key to select parameters within each function group.

• U up key — Each press of this key increments the value displayed on the No. 2 display. Holding down this key continuously increments the value displayed.

• D down key — Each press of this key decrements the value displayed on the No. 2 display. Holding down this key continuously decrements the value displayed.

• + M key combination — This key combination sets the Bulletin 900-TC16 to the “Protect function group.” For details on the Protect function group, see Chapter 5 — Parameter Functions and Definitions.

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1-6 Bulletin 900-TC16 Overview

Notes:

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Page 19

Preparations

Chapter

Installation

48 48

Front View Side View Back View

Approximate Dimensions

Dimensions are in millimeters. Dimensions are not intended to be used for manufacturing purposes.

Note: To convert millimeters to inches, multiply by 0.0394.

Figure 2.1

Panel Mounting Adapter

44.844.8 x

48.8

2-1 Publication 900-UM001C-EN-E - January 2004

Page 20

2-2 Preparations

➍

min.

Panel Cutout

Dimensions are in millimeters. Dimensions are not intended to be used for manufacturing purposes.

Figure 2.2

(48 number of units -2.5)

x60 min.

➊

Horizontal Group Mounting of Controllers (without Waterproofing ➌)

➋

➊

Individual Mounting (Vertical and Horizontal)

➊ Tolerance: +0.6…0.0 mm ➋ Tolerance: +1.0…0.0 mm ➌ This is a configuration in which the controllers are contiguously mounted (side by side). Therefore, the

➍ Maintain the specified mounting space between each controller. Controllers must not be group mounted

waterproof gasket cannot provide protection.

vertically.

• Horizontal group-mounting two or more temperature controllers, or mounting temperature controllers above each other may cause heat to build up inside the temperature controllers, which will shorten their service life. When mounting temperature controllers like this, consider forced cooling measures such as a cooling fan.

• If forced air cooling is used, limit cooling to the terminal block. Rapid variation or transients in temperature at the terminal block may result in a measurement error.

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Page 21

System Wiring and Installation Guidelines

Preparations 2-3

ATTENTION

Risk of Electrical Shock

• Devices are Open Type, Listed Process Control

Equipment and must be mounted in an enclosure.

• More than one disconnect switch may be required to

de-energize the equipment before servicing.

• Signal inputs are SELV, limited energy.

• To reduce risk of fire or electrical shock, do not

interconnect the outputs of different Class 2 circuits.

• Disconnect all power (including field device) before

installing and/or servicing.

• Do not touch the controller’s wiring terminals while

the controller power is ON. Doing so may cause an electric shock.

• Do not allow metal fragments or lead wire scraps to

fall inside the Bulletin 900-TC16 Temperature Controller. These may cause electric shock, fire, or malfunction.

• Never disassemble, repair, or modify the

Bulletin 900-TC16 Temperature Controller with line or field device power applied. Doing so may cause electric shock, fire, or malfunction.

• Do not use the Bulletin 900-TC16 Temperature

Controller in flammable and explosive gas atmospheres.

• Use the Bulletin 900-TC16 Temperature Controller

within the rated supply voltage. Not doing so may cause damage or fire.

• Configure all settings according to the control target. If

the configuration is not appropriate for the control target, the Bulletin 900-TC16 Temperature Controller may operate in an unexpected manner, resulting in damage to the product or personal injury.

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Page 22

2-4 Preparations

ATTENTION

• To maintain safety in the event of a product

malfunction, always take appropriate safety measures, such as installing an alarm on a separate power or control line to prevent excessive temperature rise. If a malfunction prevents proper control, an accident may result.

• Do not wire unused terminals.

• Make sure to observe correct polarity when wiring the

controller terminals.

• Do not use the Bulletin 900-TC16 Temperature

Controller in the following places which might exceed its specifications:

– Places subject to dust or corrosive gases (in

particular, sulfide gas, and ammonia gas)

– Places subject to high humidity, condensation, or

freezing

– Places subject to direct sunlight

– Places subject to vibration and large shocks

– Places subject to splashing liquid or oily atmosphere

– Places directly subject to heat radiated from heating

equipment

– Places subject to intense temperature changes

Publication 900-UM001C-EN-E - January 2004

• To allow heat to escape, do not block the area around

the Bulletin 900-TC16 Temperature Controller. (Ensure that enough space is left for the heat to escape.) Do not block the ventilation holes on the casing.

• Cleaning: Do not use paint thinner or the equivalent.

Use standard grade alcohol to clean the Bulletin 900-TC16 Temperature Controller.

• Power supply, input, output, and communication

terminals (for models with communications) have basic insulation between them. When double insulation is required, apply supplemental insulation defined in IEC 60664 that is suitable for the maximum operating voltage with clearances or solid insulation.

Page 23

Preparations 2-5

ATTENTION

• Attach a surge suppressor or noise filter to peripheral

devices that generate noise (in particular, motors, transformers, solenoids, magnetic coils, or other equipment that have an inductance component).

• Use within the following temperature and humidity

ranges:

Temperature: –10…+55°C, Humidity: 25…85% (with no icing or condensation)

If the Bulletin 900-TC16 is installed inside a control panel, the ambient temperature must be kept to under 55°C, including the temperature around the Bulletin 900-TC16.

If the Bulletin 900-TC16 is subjected to heat radiation, use a fan to cool the surface of the Bulletin 900-TC16 to under 55°C.

• Store within the following temperature and humidity

ranges:

Temperature: –25…+65°C, Humidity: 25…85% (with no icing or condensation)

• Never place heavy objects on, or apply pressure to the

Bulletin 900-TC16 as it may cause it to deform and deteriorate during use or storage.

• Avoid using the Bulletin 900-TC16 in places near a

radio, television set, or wireless installation. These devices can cause radio disturbances which may adversely affect the performance of the Bulletin 900-TC16.

Setting Up the Controller with the Optional Units

If RS-485 communications, event input, and heater burnout functions are required, mount the communications unit (Cat. No. 900-TC16COM) or the event input unit (Cat. No. 900-TC16EIM) in the Bulletin 900-TC16 controller.

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Page 24

2-6 Preparations

Option Units

If heater burnout is not required or if you are using a controller with analog output, use the 900-TC16ACCOM or 900-TC16ACEIM option unit.

Table 2.A

Name Cat. No. ➊ Function

RS-485 Communications and heater burnout unit

900-TC16COM ➋ RS-485 Communications

with heater burnout function

RS-485 Communications

900-TC16ACCOM ➋ RS-485 Communications

unit Event input unit and heater

burnout

900-TC16EIM ➋ Event input with heater

burnout function

Event input unit 900-TC16ACEIM ➋ Event input

➊ One (1) option unit per controller. ➋ The option unit provides optical isolation (approximately 32V DC) between the controller electronics and the

field input.

Installing the Option Unit/Board in the Controller

Figure 2.3

(1)

(4)

(2)

(1)

Regular screwdriver (units: mm)

20 min.

Publication 900-UM001C-EN-E - January 2004

(3)

Note: When you remove the internal mechanism from the housing, never touch electric components inside or subject the internal mechanism to shock.

Page 25

Preparations 2-7

1. Insert the two regular flat-bladed screwdrivers (see drawing above) into the slots (one on the top and one on the bottom) to release the controller case locking hooks.

2. Insert the screwdriver into the gap between the front case and rear case, and slightly draw out the front panel. Then, using your hands, gently remove the front (LED) case from the rear case (with terminal block).

Note: Ensure you take note of the front and rear case orientation before removing the two parts. The parts will not go together if assembled incorrectly. However, if excessive force is applied, damage could result.

3. Install the option unit: Match the upper and lower circuit board locking claws with the option board connection points and insert the option unit. The option unit mounts in the center position.

4. Before you push the unit back into the case, make sure that the water tight packing is in place. Push the unit back into the rear case until you hear a click. When you do this, hold down the hooks on the top and bottom of the rear case so that they are firmly hooked in place.

Panel Mounting

Figure 2.4

Safety Terminal Block Cover

➊

Rear Case Terminal Block

➊ Per VDE 0106

Panel Mounting Adaptor

Panel

Front Case

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Page 26

2-8 Preparations

How to Attach the Bulletin 900-TC16 on the Panel

1. Insert the controller through the hole in the panel from the front, and push the panel mounting adapter on from the rear. Push the adapter up to the back of the panel ensuring that the controller is pushed all the way in, removing any gap between the controller, panel, and adapter. Finally, use the two screws on the adapter to secure the unit in place. The recommended panel thickness is 1…5 mm.

2. To mount the Bulletin 900-TC16 so that it is waterproof, insert the waterproof packing on the Bulletin 900-TC16. The Bulletin 900-TC16 cannot be waterproofed when it is group-mounted in the horizontal fashion shown in Figure 2.1.

3. Maintain the specified mounting space between each controller.

4. When two or more Bulletin 900-TC16s are mounted together, make

sure that the surrounding ambient temperature does not exceed the allowable specified operating temperature of 55°C.

5. Tighten the two screws on the adapter against the panel. Tighten the two screws alternately keeping the torque to approximately

0.29…0.39 Nm (2.57…3.45 lb-in.).

6. To allow heat to escape, do not block the area around the Bulletin 900-TC32 Temperature Controller. (Ensure that enough space is left for the heat to escape.) Do not block the ventilation holes on the casing.

7. Allow as much space as possible between the Bulletin 900-TC32 and devices that generate powerful high-frequency noise (e.g., high-frequency welders, high-frequency sewing machines) or surges.

8. Install the controller so that it is horizontal (can read the display properly).

How to Attach the Wiring Terminal Block Cover

Make sure that the UP mark on the adapter is facing up, and then fit the terminal cover into the holes on the top and bottom. The Bulletin 900-TC16 is provided with a protective terminal block cover (finger protection per VDE 0106).

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Preparations 2-9

Bulletin 900-TC16 Wiring Terminals

Voltage output/relay output/Current output

Control output 1

Analog input

Input power supply required: 100…240V AC

Terminal Arrangement

Figure 2.5

(Rear of Case)

Alarm output

ALM1/heater burnout

/Input error

Input power supply

Event input/CT Communications/CT

ALM2/ Control output2

and HBA and HBA

EV1

EV2

CT CT

900-TC16EIM 900-TC16COM

No. Cat. No. Cat.

RS–485 B(+)

A(–)

Do not use

Wiring Guidelines and Precautions

ATTENTION

• Separate input leads and power lines in order to protect the

Bulletin 900-TC16 and its low voltage sensor (e.g., TC) and communication lines from external noise.

• Do not wire unused terminals.

• To reduce the effects of induced electrical noise, keep

the high-voltage or large-current power lines as far away as possible from signal (low-voltage) lines, and avoid parallel or common wiring with the power lines when you are wiring to the terminals. We recommend using separating pipes, ducts, or shielded lines.

• Allow as much space as possible between the Bulletin

900-TC16 and devices that generate powerful high-frequency noise (e.g., high-frequency welders, high-frequency sewing machines) or surges.

• Make sure to observe correct polarity when wiring the

controller terminals.

Publication 900-UM001C-EN-E - January 2004

Page 28

2-10 Preparations

• We recommend using solderless lugs (see Figure 2.6) when wiring the

Bulletin 900-TC16. However, if lugs are not used, the controller’s screw terminals will accept two solid or stranded wires (no mixing) between 24…14 AWG.

• Tighten the terminal block’s screws using a torque 1.13…1.36 Nm

(10…12 lb-in.). Loose screws may result in the wires falling off, causing a malfunction.

• Use the following type of solderless lugs for M3.5 screws.

Figure 2.6

7.2 mm max.

Wiring

Power Supply

The controller requires an external power source for operation. Connect to terminals 9 and 10. The following table shows the specification of the external supply.

Table 2.B

Input Power Supply Bulletin 900-TC16 Power Usage

100…240V AC, 50/60 Hz 4.7 VA @ 120V AC, 7 VA @ 240V AC 24V AC, 50/60 Hz 4 VA 24V DC (not polarity sensitive) 3 W

ATTENTION

Use a power supply matched to the power specifications of the Bulletin 900-TC16. Also, make sure that rated voltage is attained within 2 seconds of turning the power ON.

When mounting a noise filter on the power supply, make sure to first check the filter’s voltage and current capacity, and then mount the filter as close as possible to the Bulletin 900-TC16.

Publication 900-UM001C-EN-E - January 2004

Standard insulation is applied to the power supply I/O sections. If reinforced insulation is required, connect the input and output terminals to a device without any exposed current-carrying parts or to a device with standard insulation suitable for the maximum operating voltage of the power supply I/O section.

Page 29

Preparations 2-11

Wiring Input/Sensor Devices

Connect sensors to terminals 3…5 as follows according to the input/sensor type.

Figure 2.7

4 5

Thermocouple

3 4

thermometer

A B

Platinum resistance

3 4

Analog input

Input/Sensor Wiring Considerations

• When it is necessary to extend the thermocouple leads, make sure to use

thermocouple extension wire matched to the type of thermocouple.

• For a thermocouple, make sure to follow the polarity color code

convention.

• If there is a large error in the measurement values, make sure that input

compensation has been properly configured.

• RTDs can be either 2- or 3-wire types. If a 3-wire type is used, the controller provides lead wire resistance compensation up to 5 Ω resistance. If using 24 AWG lead wire, this is approximately 59 m of wire. Use larger gauge wire if longer length is required.

• For RTDs, the controller source is approximately 1 mA of current.

• If a cooling fan is used in the panel enclosure, prevent only the terminal

block from being cooled when using thermocouples. Otherwise, this may result in a measurement error.

• To reduce induced electrical noise, the leads on the temperature controller’s terminal block must be wired separately from large-voltage/large-current power leads. Also, avoid wiring leads in parallel with power leads or in the same wiring path. Other methods such as separating conduits and wiring ducts, or using shield wire are also effective.

Wiring Control Output 1

Terminals 1 and 2 are for control output 1. The following diagrams show the available hard contact, fixed voltage (SSR) or analog outputs and their internal equalizing circuits.

Publication 900-UM001C-EN-E - January 2004

Page 30

2-12 Preparations

Figure 2.8

Temperature controller

Relay

GND

Voltage (SSR)

GND

Current

The following table shows the specifications for each output type.

Table 2.C

Output Type Specifications

Relay 3 A @ 250V AC, 10 A @ 30V AC (max. resistive load), 5V, 10 mA

(min. resistive load) electrical life: 100,000 operations Voltage (PNP) PNP type, 12V DC, 21 mA (with over-current limit protection) Current DC: 4...20 mA, Load: 600 ohms max., Resolution: approx. 2,600

Output Wiring Considerations

• The PNP voltage output (control output) is not electrically isolated from

the controller’s internal circuits. When using a grounded thermocouple, do not connect the control output terminals to ground. If the control output terminals are connected to ground, errors will occur in the measured temperature values as a result of ground loop leakage current.

• The 4...20 mA analog output is electrically isolated from the other

controller circuits as follows:

– Analog Output to Sensor Input: 500 VAC 50/60 Hz for 1 minute

– Analog Output to Alarm Output: 2000 VAC 50/60 Hz for 1 minute

– Analog Output to Input Power Supply: 2000 VAC 50/60 Hz for 1

minute

• The life expectancy of the output relays varies greatly with the switching

capacity and other switching conditions. Always use the output relays within their rated load and electrical life expectancy. If an output relay is used beyond its life expectancy, its contacts may become fused or burned.

• Use the Bulletin 900-TC16 Temperature Controller outputs within the

rated load. Not doing so may cause damage or fire.

• Attach a surge suppressor or noise filter to peripheral devices that

generate noise (in particular, motors, transformers, solenoids, magnetic coils, or other equipment that have an inductance component).

Publication 900-UM001C-EN-E - January 2004

• About 4 seconds are required for control and/or alarm outputs to turn

ON when the controller power is turned ON. Take this into consideration when the temperature controller is incorporated into a sequence circuit.

Page 31

Preparations 2-13

Wiring Alarm Output 1 and Alarm/Control Output 2

• On the Bulletin 900-TC16, Alarm Output 1 (ALM1) is across

terminals 7 and 8, and Alarm Output 2 (ALM2) is across terminals 6 and 8. When heating and cooling control is used, Alarm Output 2 becomes the cooling output (Control Output 2).

• When the Input Error Output parameter is configured to ON, alarm

output 1 turns ON when an input error occurs.

• When the option unit (Cat. No. 900-TC16EIM or 900-TC16COM) is

mounted in the Bulletin 900-TC16, an OR of alarm output 1 and the Heater Burnout alarm will result. To disable alarm output 1 and output only the Heater Burnout alarm on terminals 7 and 8, configure the mode of the alarm output 1 to the value 0 (not active selection).

• The equivalent circuits for terminals 6…8 are shown in the following

diagram.

Figure 2.9

Controller

ALM2/Control OUT2

ALM1/heater burnout alarm/Input error

• Controller alarm relay specifications are as follows:

Table 2.D

Type Voltage Steady-State Resistive Current

SPST-NO 250V AC 1 A (max. resistive load)

30V DC 2 A (max. resistive load) 1V 1 mA (min. resistive load)

Wiring the Current Transformer (CT) Input (Heater Burnout Alarm Function)

• When the option unit (Cat. No. 900-TC16COM or 900-TC16EIM) is

mounted on the Bulletin 900-TC16 and the Heater Burnout function is used, connect a current transformer (CT) across terminals 14 and 15. For CT dimensions, see p. A-4, Approximate External Dimensions.

Figure 2.10

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Page 32

2-14 Preparations

Wiring the Event Input

When the option event input unit Cat. No. 900-TC16EIM or 900-TC16ACEIM is mounted in the Bulletin 900-TC16 and the event input function is possible by connecting devices to terminals 11…13.

Figure 2.11

Temperature controller

EV1

EV2

Do not apply an external voltage source

Note:

to the Event Input Terminals.

Use event inputs under the following conditions:

• The output current from the controller is approximately 7 mA @ 5V.

• Contact input ON: 1 KΩ max., OFF: 100 KΩ min.

• No-contact input ON: residual voltage 1.5V max., OFF: leakage current

0.1 mA max.

Polarities using non-contact inputs are as follows:

Figure 2.12

Temperature Controller

EV1

EV2

Do not apply an external voltage source

Note:

to the Event Input Terminals.

Wiring Communications to a Personal Computer (Requires 900Builder Software)

Publication 900-UM001C-EN-E - January 2004

When the option communications unit Cat. No. 900-TC16COM or 900-TC16ACCOM is mounted in the Bulletin 900-TC16 for communicating with a PC, connect the RS-485 communications cable across terminals 11 and

12.

Figure 2.13

Temperature controller

B(+)

RS-485

A(–)

Page 33

Figure 2.14 Communication Unit Wiring Diagram

PC with RS-232 to RS-485 Converter such as 900-CONV Shielded cable

900-TCx (No.1)

A<B : “1” mark A>B : “2” space

RS-485

Abbr.

A(–)12 B(+)11

Preparations 2-15

900-TCx (No.31)

RS-485

Abbr.

A(–)12 B(+)11

Terminator

(120 Ω

, 1/2 W)

• The RS-485 connection can be either one-to-one to one-to-N. Up to 32

units including the personal computer can be connected in one-to-N systems. Use shielded, twisted pair cable (24…14 AWG) and keep the total cable length within 500 m.

• Specify both ends of the transmission path including the PC as the end

node (that is, connect terminating resistors to both ends).

The maximum terminal resistance is 54 Ω (see Figures 2.13 and 2.14).

• The first and last device in the link must be terminated with a 120 Ω,

1/2 W resistor.

Figure 2.15

AWG24 min. Conductor area cross-section

0.08042mm

min.

• To use a PC on an RS-485 link/network connection, a Bulletin

900-CONV RS-232-to-RS-485 or equivalent converter is required.

Figure 2.16

900-TC16900-TC16

RS-232

RS-485

900-CONV

Note: The PC must have 900Builder software installed to configure/monitor the Bulletin 900-TC16 controller(s).

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Page 34

2-16 Preparations

Notes:

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Page 35

Configuration and Basic Operation

Chapter

How Function Groups Are Configured and Operating the Keys on the Front Panel

Figure 3.1

perational

dicator

Function Group key

Mode key Down key

Temperature unit

900-TC16

Displays/Indicators

No. 1 display

No. 2 display

Operations keys

Up key

Parameters are divided into control categories, each called a function group. Each of the items/values that can be configured in these function groups is called a parameter. The function groups on the Bulletin 900-TC16 are divided into the following:

Figure 3.2

Power ON

Operation function group

Less than 1 second

key

1 second min.

Initial setting function group

key

1 second min.

Advanced setting function group

Calibration function group

Adjustment function group

key

3 seconds min.key

key

The PV display flashes after one second.

Control stops.

Communications setting function group

key

Less than 1 second

Password input set value “-169”

Note : Communications setting level is displayed when the optional communication unit

Password input set value “1201”

Cat. No. 900-TC16COM is mounted.

+ key

1 second min.

Protect function group

Control in progress

Control stopped

+ key

The PV display flashes

+ key

3 seconds min.

3-1 Publication 900-UM001C-EN-E - January 2004

Page 36

3-2 Configuration and Basic Operation

Table 3.A

Control Category Control in Progress Control Stopped

Protect function group — Operation function group — Adjustment function group — Initial Setting function group — Advanced Setting function group — Calibration function group — Communications Setting function group —

Indicates items can be configured.

Of these control categories, the Initial Setting function group, Communications Setting function group, Advanced Setting function group, and Calibration function group can be used only when control has stopped. Note that controller outputs are stopped/reset when any of these four function groups are selected.

• Protect Function Group — To move the control category to this

function group, simultaneously press the and M keys for at least 3 seconds in the Operation function group or Adjustment function group. This function group is used to prevent unwanted or accidental modification of parameters. Protected parameters will not be displayed, and so the parameters in that function group cannot be modified.

• Operation Function Group — This control category is displayed

when you turn the power to the controller ON. You can move to the Protect function group, Initial Setting function group, and Adjustment function group from this function group.

Normally, select this function group during operation. During operation, the process value (PV), set point (SP), and manipulated variable (MV) can be monitored, and the alarm value and upper- and lower-limit alarms can be monitored and modified.

• Adjustment Function Group — To move the control category to this

function group, press the key for less than 1 second.

This function group allows you to enter control parameters. This function group contains parameters for setting the AT (auto-tuning), communications writing enable/disable, hysteresis, multi-SP, input shift values, heater burnout alarm (HBA), and PID constants. You can move

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Page 37

Configuration and Basic Operation 3-3

to the top parameter of the Initial Setting function group and Operation function group from here.

• Initial Setting Function Group — To move to this function group,

press the key for at least 3 seconds in the Operation function group or Adjustment function group. The PV display flashes after 1 second. This function group is for specifying the input type, selecting the control mode, control period, setting direct/reverse action, and alarm type. You can move to the Advanced Setting function group or Communications Setting function group from this function group. To return to the Operation function group, press the key for at least 1 second. To move to the Communications Setup function group, press the key for less than 1 second.

• Advanced Setting Function Group — To select this function group,

you must enter the password (–169) in the Initial Setting function group.

You can move to the Calibration function group only from this function group. This function group is for configuring the automatic return of display mode, MV limitter, event input assignment, standby sequence, alarm hysteresis, ST (self-tuning), and for moving to the user Calibration function group.

• Communications Setting Function Group — To move to this

function group, press the key for less than 1 second in the Initial Setting function group. When the communications function is used, set the communications conditions in this function group. Communicating with a PC allows set points to be read and written, and manipulated variables to be monitored.

Note: This function group is available if the optional communications card (Cat. No. 900-TC16COM or 900-TC16ACCOM) is fitted in the unit.

• Calibration Function Group — To move to this function group, you

must enter the password (1201) in the Advanced Setting function group. This function group allows you to configure an offset deviation for the input circuit.

You cannot move to other function groups from this function group by operating the keys on the front panel. To cancel this function group, turn the controller’s power OFF then back ON again.

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3-4 Configuration and Basic Operation

Selecting Parameters

To select the various parameters in each function group, press the M key. Each press of the M key advances to the next parameter. For details on each parameter, see Chapter 5 — Parameter Functions and Definitions.

Figure 3.3

Parameter

Changing Parameters and Loading Values into Controller Memory

If you press the M key at the final parameter, the display returns to the top parameter for the current function group.

To change the parameters value or configuration (setup), modify the setting by using the U or D key, and either leave the setting alone/unchanged for at least 2 seconds or press the M key. This loads the present value displayed into controller memory.

When another function group is selected, the parameter and value on the display are the ones currently loaded into memory.

Before you turn controller power OFF, you must first load the values or parameters setup (by pressing the M key). The values and parameters setup are sometimes not changed by merely pressing the U or D key.

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Configuration and Basic Operation 3-5

Communications Function

The Bulletin 900-TC16 can be provided with a communications function that allows you to monitor and configure controller parameters from a PC that has 900Builder software installed. If the communications function is required, mount the optional circuit board (Cat. No. 900-TC16COM or 900-TC16ACCOM) into the Bulletin 900-TC16.

Follow the procedure below to move to the Communications Setting function group.

1. Press the key for at least 3 seconds in the Operation function group. This moves you to the Initial Setting function group.

2. Press the key for less than 1 second. The Initial Setting function group moves to the Communications Setting function group.

3. Pressing the M key advances the parameters as shown in the following figure.

4. Press the U or D key to change the configuration of any parameter value.

Figure 3.4

Communications Unit No.

Baud rate

Data bit

Stop bit

Parity

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3-6 Configuration and Basic Operation

Setting up Communications Parameter Data

Set the Bulletin 900-TC16 communications parameter specifications so that they match the communication parameter setup for the personal computer using 900Builder software. In a multidrop (RS-485) 1:N configuration, match the setting data except the communications unit numbers on all units. Unique communications unit numbers must be configured for each controller/device in an RS-485 system.

Table 3.B

Initial Setup Examples

Parameter Displayed

Characters

Communications Unit No. u-no 0…99 1 None Baud Rate bps 1.2, 2.4, 4.8, 9.6,

Data Bit len 7, 8 7 bit Stop Bit sbit 1, 2 2 bit Parity prty None, even, odd Even None

Configurable (Monitor) Value

19.2

Default Value

9.6 kbps

Units

The and M keys are used to switch between configuration menus, and the amount of time that you hold the keys down determines which configuration menu you move to. This section describes two typical examples.

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Page 41

Figure 3.5 Typical Example

Alteration Overview:

Input type : 0 = K thermocouple -200…1300°C Control method : On/Off Control Alarm type : 2 upper limit Alarm value 1 : 20°C deviation Set point : 100°C

Initial setting function group

Setup procedure

Power ON

Configuration and Basic Operation 3-7

Operation function group

Initial setting function group

Power ON

Process value/ set point

Press key for at least three seconds. Control stops.

Set input specifications

Set control specifications

Operation function group

Set alarm type

Check input type.

Check that control is ON/OFF control.

Check alarm type.

Operation function group

Press keys to set point to

"100°C".

Make sure that control is running.

Input type

In ON/OFF control

In PID control

Alarm 1 type

Press key for at least one second

Process value/ set point

During run During stop

Set alarm values

Start operation

Press keys to set alarm value

to "20°C".

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Alarm value 1

Start operation

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3-8 Configuration and Basic Operation

Alteration Overview:

Input type : 4 = T thermocouple -200°…400°C Control method : PID control Calculate PID constants by AT (auto tuning) execution. Alarm type : 2 upper limit Alarm value 1 : 30°C (deviation) Set point : 150°C

Initial setting function group

Figure 3.6 Typical Example 2

Setup procedure

Power ON

Operation function group

Initial setting function group

Power ON

Process value/ set point

Press key for at least three seconds.

Control stops.

Set input specifications

Set control specifications

Adjustment function group

Set alarm type

AT execution

PV/ST After AT execution

During AT execution

While AT is being executed SP will flash

After AT execution

Press keys to select input type.

Press keys to select PID control.

Press keys to set ST to OFF.

Check the control period.

Check alarm type.

Operation function group

Press keys to set point to "150°C".

Adjustment function group

Execute AT (auto tuning).

Input type

In ON/OFF control

In PID control

To execute ST To cancel ST

Control period (heat) (unit: seconds)

Alarm 1 type

Press key for at least one second

Process value/ set point

Press key for less than one second

To execute AT To cancel AT

Operation function group

Publication 900-UM001C-EN-E - January 2004

(when PID control

is selected)

Set alarm values

Start operation

During AT execution

Operation function group

Make sure that set point is 150°C.

Make sure that control is running.

Press keys to set alarm value to "30°C".

Press key for less than one second

Start program execution

Process value/ set point

During run During stop

Alarm value 1

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Configuration and Basic Operation 3-9

Configuring the Input Type

The Bulletin 900-TC16 supports four input/sensor types: platinum Resistance Temperature Detector (RTD), thermocouple, non-contact temperature sensor, and 0…50 mV analog input. To configure the controller input type refer to the appropriate sensor in the Input Type parameter (see Table A.D, List of Input Types) and use the Set Value number that matches the sensor. The Bulletin 900-TC16 general controller specifications support two types of inputs, platinum resistance thermometer input types and thermocouple input type, whose set values differ. Check the cat. no. of your Bulletin 900-TC16 at purchase to ensure it matches your input requirements (see Table 1.A).

Input Type

Example Operation Procedure — Configure the Input Type for Type K Thermocouple –20.0…500.0°C

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.7

Operation function group

Initial setting level

Input type

Selecting °C/°F

2. Press the U key to configure the Set Value of the desired sensor. When you use a type K thermocouple (–20.0…+500.0°C), enter 1 as the value.

Note: The Set Value is loaded into the controller memory if you do not operate the keys on the front panel for 2 seconds after changing the

parameter, or by pressing the or M keys. This applies to changing all values and/or parameters.

Figure 3.8

Temperature Unit

Selecting temperature units (°C/°F) is easily configurable from the keypad.

Configure the temperature unit in the Temperature Unit parameter of the Initial Setting function group. Note: The default is °C.

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3-10 Configuration and Basic Operation

Example Operation Procedure — Select °C

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.9

Operation function group

2. Select the Temperature Unit parameter by pressing the M key. Press the U or D key to select either °C (c) or °F (f).

Figure 3.10

3. To return to the Operation function group press the key for at least 1 second.

Initial setting function group

Input type

Temperature unit

Configuring the SP

Figure 3.11

Operation function group

The Operation function group is displayed when the Bulletin 900-TC16 is turned ON. The upper display (No. 1) shows the process value (PV), and the lower display (No. 2) shows the set point (SV or SP).

Changing the SP

The set point cannot be changed when the Operation/Adjustment Protection parameter is set to 3. For details, see p. 4-28, Using the Key Protect Function Group.

To change the set point, press the U or D key in the PV/SP parameter (Operation function group), and configure the desired value. The new set point is selected 2 seconds after you have specified the new value.

The Multi-SP parameter is used to switch between two or four pre-configured set point values. See p. 4-16, Using the Event Input Feature for details.

Publication 900-UM001C-EN-E - January 2004

Example Operation Procedure

In this example, the set point will be changed from 0°C to 200°C.

Page 45

Configuration and Basic Operation 3-11

1. Normally, the PV/SP parameter is displayed. The set point is 0°C.

Figure 3.12

Operation level

2. Press the U or D key until the set point changes to 200°C.

Figure 3.13

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Selecting PID Control or ON/OFF Control

Overview

The Bulletin 900-TC16 supports two control methods, 2-PID control and ON/OFF control. The control method is selected by the PID/ON/OFF parameter in the Initial Setting function group. When this parameter is set to pid, 2-PID control is set, and when set to onof, ON/OFF is set. Note: The default is ON/OFF control.

2-PID Control

PID control parameters are set by AT (auto-tuning), ST (self-tuning), or manual setup. For PID control, set the PID constants in the Proportional Band (P), Integral Time (I), and Derivative Time (D) parameters. For more details, see p. 3-18.

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3-12 Configuration and Basic Operation

ON/OFF Control

In the ON/OFF control method, the control output (MV) is turned ON when the process value is lower than the current set point, and the control output is turned OFF when the process value is higher than the current set point. This is known as reverse operation. Direct operation refers to control where the manipulated variable is increased according to the increase in the process value.

Configuring the Output Parameters

Control Period

The Control Period parameter is used in the PID control method and allows you to adjust the minimum amount of time between ON cycles of the ON/OFF output (MV).

Figure 3.14

Control period (OUT1)

Control period (OUT2)

A shorter period may provide better ON/OFF control performance. However, we recommend setting the control period to 20 seconds or more for electromechanical relay outputs. In the case of an electromechanical relay output, doing this will increase its life expectancy. If necessary, readjust the control period by trial operation to meet the needs of the application.

• Configure the control period value in the Control Period (OUT1) and

Control Period (OUT2) parameters (Initial Setting function group). Note: The default is 20 seconds.

Publication 900-UM001C-EN-E - January 2004

• The Control Period (OUT2) parameter can only be used in heating and

cooling control method.

Note: The Control Period parameter allows what is typically called “time proportioning” ON/OFF control to be done in the 2-PID method.

Page 47

Manipulated variable (MV)

100%

Configuration and Basic Operation 3-13

Direct/Reverse Operation

Figure 3.15

Direct operation refers to control where the manipulated variable is increased according to the increase in the process value (PV). Alternatively, reverse operation refers to control where the manipulated variable (MV) is decreased according to the increase in the process value (see Figure 3.16). Direct/reverse operation can be used in ON/OFF or PID control.

Figure 3.16 Direct/Reverse Operation

Manipulated variable (MV)

100%

Low temperature

Set value (SP)

Direct operation

For example, when the process value temperature is lower than the set point (SP) temperature in a heating control system, the manipulated variable (OUT1) increases (ON) by the difference between the PV and SP values.

Accordingly, this becomes reverse operation in a heating control system, or alternatively, direct operation in a cooling control system.

Direct/reverse operation is set in the Direct/Reverse Operation parameter (Initial Setting function group). Note: The Direct/Reverse Operation parameter default is reverse operation.

Example Operation Procedure

In this example, the Input Type, Temperature Unit, Direct/Reverse Operation, and Control Period (OUT1) parameters will be monitored.

High temperature

Low temperature

High temperature

Set value (SP)

Reverse operation

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Page 48

3-14 Configuration and Basic Operation

The parameter setup is as follows:

Input Type = 0: K thermocouple Temperature Unit = c: °C Direct/Reverse Operation = or-r: reverse operation Control Period (OUT1) = 20 seconds

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.17

Operation function group

2. The Input Type is displayed. When you are monitoring/configuring the Input Type for the first time, 0: K type thermocouple is set as the default. (0 is set if you have a platinum resistance thermometer-compatible controller [see Table 1.A].) To select a different sensor, press the U or D keys. This changes the Set Value (see Table A.D, List of Input Types) to match the desired sensor input.

Figure 3.18

Initial Setting function group

Input type

3. Select the Temperature Unit parameter by pressing the M key. Note: The default is c: °C. To configure f: °F, press either of the U or D keys.

Figure 3.19

Temperature unit

4. Select the Control Period (OUT1) parameter by pressing the M key. Note: The default is 20.

Figure 3.20

Control period (OUT1)

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Page 49

Configuration and Basic Operation 3-15

5. Select the Direct/Reverse Operation parameter by pressing the M key. Note: The default is or-r: reverse operation. To select or-d: direct

operation, press either U or D keys.

Figure 3.21

Direct/reverse operation

6. To return to the Operation function group press the key for at least 1 second.

Figure 3.22

Operation level

PV/SP

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Executing the ON/OFF Control Method

ON/OFF Overview

In the reverse operation ON/OFF control method, the control output (MV) turns OFF when the controlled temperature (PV) reaches the user-defined set point. When the control output (MV) turns OFF, the controlled temperature begins to fall and the control output (MV) turns ON again. This operation is repeated at a certain point. At this time, how much the temperature must fall before the control output (MV) turns ON again is determined by the Hysteresis (OUT1) parameter. Also, how much the manipulated variable must be adjusted in response to the increase or decrease in the process value is determined by the Direct/Reverse Operation parameter.

ON/OFF Control Parameters

Switching between the 2-PID control method and ON/OFF control method is carried out by the PID/ON/OFF parameter (Initial Setting function group). When this parameter is configured to pid, 2-PID control is selected, and when configured to onof, ON/OFF control is selected. Note: The default is onof.

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3-16 Configuration and Basic Operation

Hysteresis

In the ON/OFF control method hysteresis is used to provide margin/differential for switching the control output ON when the controlled temperature moves away from the required set point. The Hysteresis parameter is used to provide stability to the output around the set point.

The hysteresis value for control output (OUT1) and control output (OUT2) functions are configured in the Hysteresis (OUT1) and Hysteresis (OUT2) parameter functions, respectively. In standard heating or cooling control, the Hysteresis (OUT1) setting is used as the hysteresis setting (Adjustment function group) regardless of the control mode, heating control, or cooling control.

Figure 3.23

Reverse operation

OFF PV

Hysteresis (OUT1)

Set point

3-Position Control

In the heating and cooling control method, a dead band (an area where both control outputs are 0) can be configured for either the heating or cooling side of the set point. This makes 3-position control possible.

Figure 3.24

Dead band

Hysteresis (OUT1)

Heating side

OFF

Set point

Hysteresis (OUT2)

Cooling side

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Configuration and Basic Operation 3-17

Table 3.C Control Parameters

Symbol Parameter Name: Function Group Description

s-hc Standard/Heating and Cooling: Initial Setting

function group

cntl PID/ON/OFF: Initial Setting function group For specifying control method orev Direct/Reverse Operation: Initial Setting

function group

c-db Dead Band: Adjustment function group Heating and cooling control c-sc Cooling Coefficient: Adjustment function

group

hys Hysteresis (OUT1): Adjustment function group ON/OFF control chys Hysteresis (OUT2): Adjustment function group ON/OFF control

For specifying control method

Heating and cooling control

ON/OFF Control Setup

To execute ON/OFF control, configure the PID/ON/OFF and Hysteresis parameters.

Example Operation Procedure — Configuring the PID/ON/OFF Parameter

In this example, first check that the PID/ON/OFF control method parameter is set to onof in the Initial Setting function group.

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.25

Operation function group

2. Display the Input Type parameter in the Initial Setting function group.

Figure 3.26

Initial Setting function group

Input type

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Page 52

3-18 Configuration and Basic Operation

3. Select the PID/ON/OFF parameter by pressing the M key.

Figure 3.27

PID / ON/OFF

4. Check that the configured control method parameter is onof. Note: The default is onof.

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Determining PID Constants (AT, ST, Manual Setup)

AT (Auto-Tuning)

Figure 3.28

Overview

When you configure the controller to execute auto-tuning, the optimum PID constants for the current set point during program execution are automatically configured by the controller forcibly changing the manipulated variable (MV) to calculate the characteristics (called the limit cycle method) of the control target.

To have the controller execute AT (auto-tuning), specify on: AT execute, and to cancel AT (auto-tuning), specify off: AT cancel.

Note: AT (auto-tuning) cannot be executed during ON/OFF control.

The result of a controller AT (auto-tuning) cycle can be viewed/monitored from the Proportional Band (P), Integral Time (I), and Derivative Time (D) parameters located in the Adjustment function group.

Publication 900-UM001C-EN-E - January 2004

Figure 3.29

Adjustment function group

Proportional band

Integral time

Derivative time

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Configuration and Basic Operation 3-19

AT Description and Display Consideration

AT (auto-tuning) is started when you configure the AT Execute/Cancel parameter to ON. During execution of AT, the No. 1 display for the AT Execute/Cancel parameter blinks (see Figure 3.30). When AT ends, the AT Execute/Cancel parameter turns OFF, and the No. 1 display stops blinking.

Figure 3.30

During AT execution

No. 1 display

If you move to the Operation function group during AT execution, the No. 2 display blinks to indicate that AT is being executed.

Figure 3.31

During AT execution

No. 2 display

Note: Only the Communications Writing, RUN/STOP, and AT Execution/Cancel parameters can be changed during AT execution. Other parameters cannot be changed.

Example Operation Procedure — Execute Auto-Tuning (AT)

1. Press the key for less than 1 second to move from the Operation function group to the Adjustment function group.

Figure 3.32

Adjustment function group

AT execute cancel

2. Press the U key to start execution of AT. on is displayed during AT execution.

Figure 3.33

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3-20 Configuration and Basic Operation

3. off is displayed when AT ends.

Figure 3.34

4. To return to the Operation function group, press the key.

Figure 3.35

Operation function group

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Note: When control characteristics are already known either from experience or from a previous AT cycle, the PID parameters can be configured directly from the keypad to adjust control. PID values are configured in the Proportional Band (P), Integral Time (I), and Derivative Time (D) parameters in the Adjustment function group.

ST (Self-Tuning)

Figure 3.36

In the ST (self-tuning) function the controller executes its tuning process from the start of program execution to calculate the PID constants matched to the actual control target.

Once the self-tuning PID constants have been calculated, and as long as the set point remains unchanged, ST is not executed during the next control operation/cycle.

Example Operation Procedure — Execute Self-Tuning (ST)

ST (self-tuning) is executed when the ST parameter is set to ON in the Initial Setting function group.

When the ST function is in operation, make sure to turn the power supply of the load connected to the control output (MV) ON simultaneously with or before starting operation of the Bulletin 900-TC16.

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Configuration and Basic Operation 3-21

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.37

Initial Setting function group

Input type

2. Select the ST parameter by pressing the M key.

3. Press the U key to select on. Note: The default is on.

Figure 3.38

4. To return to the Operation function group, press the key. The temperature display blinks during self-tuning (ST) execution and stops when it is complete.

Figure 3.39

Conditions that Start Self-Tuning (ST)

Self-tuning by Step Response Tuning (SRT) is started when either of the two following major conditions are met:

• Program execution is started.

• The set point is changed.

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3-22 Configuration and Basic Operation

The following table provides some additional details.

Table 3.D

At Start of Program Execution (Self-Tuning ON)

1. The set point at the start of program execution differs from the set point (see Note 1) when the previous SRT cycle was executed.

2. The difference between the controlled temperature at the start of program execution is larger than the current proportional band (1.27+4°C) or the ST stable range, whichever is larger.

3. The controlled temperature at the start of program execution is smaller than the set point during reverse operation, and is larger than the set point during direct operation.

4. No reset from input error

When Set Point is Changed (Self-Tuning ON)

1. The new set point differs from the set point (see Note 1) used when the previous SRT cycle was executed.

2. The set point change width is larger than the current proportional band 1.27+4°C or the ST stable range, whichever is larger.

3. During reverse operation, the new set point is larger than the set point before the change; and during direct operation, the new set point is smaller than the set point before the change.

4. The temperature is in a stable state (see Note 2). An equilibrium state (see Note 3) is acceptable when the output is 0% when the power is turned ON.

Note 1: The previous SRT-implemented set point is called the set point obtained by calculating the PID constant by the previous SRT.

Note 2: In this state, the measurement point is within the ST stable range.

Note 3: In this state, the change width of the PV every 60 seconds is at the ST

stable range or less.

New PID constants are not calculated by self-tuning (ST) for the currently configured set point in the following instances:

• When the PID constants have been changed manually with ST set to

ON.

• When auto-tuning (AT) has been executed.

Self-Tuning (ST) Stable Range

The self-tuning (ST) stable range is a mechanism which allows you to determine the condition under which the ST function occurs.

In this example, the ST stable range will be configured to 20°C.

Example Operation Procedure

1. Select the ST Stable Range parameter by pressing the M key in the

Advanced Setting function group. To move to this function group, see p. 4-26, To Move to the Advanced Setting Function Group.

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Configuration and Basic Operation 3-23

Figure 3.40

Advanced Setting function group

ST stable range

2. Configure to 20°C (deviation) using the U key. Note: The default is 15°C.

Figure 3.41

Manual PID Setup

The individual PID values can be manually set in the Proportional Band, Integral Time, and Derivative Time parameters in the Adjustment function group.

Example Operation Procedure

In this example, the Proportional Band parameter will be configured to 10.0, the Integral Time parameter to 250, and the Derivative Time parameter to 45.

1. Press the key to move from the Operation function group to the Adjustment function group.

Figure 3.42

Adjustment function group

AT execute cancel

2. Select Proportional Band by pressing the M key.

Figure 3.43

Proportional band

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3-24 Configuration and Basic Operation

3. Press the U or D key to set the Proportional Band parameter to 10.0.

Figure 3.44

4. Select Integral Time by pressing the M key.

Figure 3.45

Integrated time

5. Press the U or D key to set the Integral Time parameter to 250.

Figure 3.46

6. Select Derivative Time by pressing the M key.

Figure 3.47

Derivative time

7. Press the U or D key to set the parameter to 45.

Figure 3.48

8. To return to the Operation function group, press the key.

Note: The newly configured value or parameter is loaded into controller

memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Note: When PID values I (integral time) and D (derivative time) are set to zero (0), control is executed according to proportional operation and the default set point becomes the center value of the proportional band. In this case a related parameter is Manual Reset Value (Adjustment function group).

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Configuration and Basic Operation 3-25

The following diagrams provide a basic explanation of how adjusting the P, I, and D parameter values impact system operation.

Table 3.E When P (Proportional Band) is Adjusted

When P is increased

When P is decreased

Set Point

The curve rises gradually, and a long stable time is achieved, preventing overshoot.

Overshoot and hunting occur, however the set point is quickly reached after which the curve stabilizes.

Table 3.F When I (Integral Time) is Adjusted

When I is increased

When I is decreased

Set Point

It takes a long time for the process value to reach the set point. It takes time to achieve a stable state, however there is little overshoot/undershoot and hunting.

Overshoot/undershoot and hunting occur, and the curve rises quickly.

Table 3.G When D (Derivative Time) is Adjusted

When D is increased

Set Point

Overshoot/undershoot and stable time are reduced, however, fine hunting occurs on changes in the curve it self.

Alarm Outputs

When D is decreased

Set Point

Overshoot/undershoot increase, and it takes time for the process value to reach the set point.

Alarm Types

The Bulletin 900-TC16 supports two alarm outputs.

Alarm output conditions are determined by the combination of the selected Alarm Type, Alarm Hysteresis, and Set Point parameters.

Alarm types are set independently for each alarm output using the Alarm 1 and Alarm 2 Type parameters (Initial Setting function group). Note: The default Set Value is 2: upper-limit (deviation).

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3-26 Configuration and Basic Operation

Configure the Alarm Type and Alarm Output Operation based on pre-defined conditions using the Set Value number. Table 3.H describes the Alarm Type, Alarm Value, Upper-Limit Alarm, and Lower-Limit Alarm parameters.

Table 3.H

Set Value

Alarm Type Alarm Output Operation

When Alarm Value X is Positive

When Alarm Value X is Negative

0 Alarm function OFF Output OFF 1 ➊ Upper- and lower-limit (deviation

range)

2 ➌ Upper-limit (deviation)

3 Lower-limit (deviation)

4 ➊ Upper- and lower-limit range

(deviation range)

5 ➊➏ Upper- and lower-limit alarm with

standby sequence (deviation range)

ON OFF

➊ With set values 1, 4, and 5, the upper- and lower-limit values can be configured independently for each alarm

point, and are expressed as L and H.

➋ Set value: 1 upper- and lower-limit alarm

Case 1 Case 2 Case 3 (Normally ON)

LHSP LHSP

H < 0, L > 0

|H| < |L|

H > 0, L < 0

|H| > |L|

LHSP

H < 0, L < 0

H < 0, L > 0

|H| |L|

H > 0, L < 0

|H| |L|

➌ Default ➍ Set value: 4 upper- and lower-limit range

Case 1 Case 2 Case 3 (Normally OFF)

LHSP LHSP

H < 0, L > 0

|H| < |L|

H > 0, L < 0

|H| > |L|

LHSP

H < 0, L < 0

H < 0, L > 0

|H| |L|

H > 0, L < 0

|H| |L|

➎ Set value: 5 upper- and lower-limit alarm with standby sequence

* For the above upper- and lower-limit alarm

- In cases 1 and 2, the alarm is normally OFF if upper- and lower-limit values of hysteresis overlap.

- In case 3, the alarm is normally OFF.

Cases 1 and 2 example:

➋

➍

➎

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➏ Set value: 5 upper- and lower-limit alarm with standby sequence

The alarm is normally OFF if upper- and lower-limit values of hysteresis overlap.

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Table 3.H (Continued)

Configuration and Basic Operation 3-27

Set

Alarm Type Alarm Output Operation

Value

6 Upper-limit alarm with standby

sequence (deviation)

7 Lower-limit alarm with standby

sequence (deviation)

8 Upper-limit (absolute-value)

9 Lower-limit (absolute-value)

10 Upper-limit with standby sequence

(absolute-value)

11 Lower-limit with standby sequence

(absolute-value)

When Alarm Value X is Positive

ON OFF

When Alarm Value X is Negative

ON OFF

Alarm values are indicated by X in Table 3.H. When the upper and lower limit values are configured independently, H is displayed for the upper limit value, and L is displayed for lower limit value.

Alarm Value

Figure 3.49

Lower-limit alarm value

To set the Upper- and Lower-Limit Alarm parameters, set the upper and lower limits in each of the Alarm 1 Upper Limit, Alarm 2 Upper Limit, Alarm 1 Lower Limit, and Alarm 2 Lower Limit parameters (available in the Operation function group).

Upper-limit alarm value

Alarm value

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3-28 Configuration and Basic Operation

Example Operation Procedure

In this example, alarm 1 will be set to the upper-limit alarm. The following shows related parameters and setups. In this example, the alarm output is active when the set point is exceeded by 10°C. (The temperature unit in this example is °C.)

Parameters to configure:

Alarm 1 Type = 2: upper-limit alarm (deviation) Alarm Value 1 = 10 (10° greater than SP)

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.50

Initial Setting function group

Input type

2. Select the Alarm 1 Type parameter by pressing the M key. Check that the Alarm Type parameter is set to 2. Note: The default is upper-limit alarm.

Figure 3.51

Alarm 1 type

3. To return to the Operation function group press the key for at least 1 second.

Figure 3.52

Operation function group

PV/SP

4. Select Alarm Value 1 by pressing M.

Figure 3.53

Alarm value 1

5. Press the U key to set the parameter to 10.

Figure 3.54

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Configuration and Basic Operation 3-29

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Heater Burnout Alarm (HBA)

HBA Detection

Figure 3.55

To CT terminal

Heater lead

Heater burnout detection works as follows.

1. You must connect the current transformer (CT) to terminals 14 and 15, and insert the heater lead through the CT hole. For specifications, models, and external dimensions of current transformers that can be used on this controller, see p. A-3, Current Transformer (CT).

2. When current flows through the heater lead, the current transformer generates an AC current proportional to the heater current value. The ON/OFF output type Bulletin 900-TC16 measures this AC current to calculate the current flowing to the heater.

3. If the heater is burned out, the current measured at the current transformer decreases. This value is compared with the value configured as the heater burnout value, and the output becomes active as the heater burnout alarm.

For the controller to measure the heater current from the CT, configure the heater burnout set value in the Heater Burnout Detection parameter from the Adjustment function group. To monitor the current value of the current transformer, use the Heater Current Monitor parameter.

When you are not using the HBA function, set the Heater Burnout Used parameter from the Advanced Setting function group to OFF.

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3-30 Configuration and Basic Operation

HBA Operating Conditions

1. The HBA function can be used when the option unit (Cat. No. 900-TC16COM or 900-TC16EIM) is mounted in an ON/OFF output type Bulletin 900-TC16. Make sure to connect the CT to the Bulletin 900-TC16, and pass the heater lead through the CT hole.

2. Turn the heater power ON at the same time as or before turning power ON to the ON/OFF output type Bulletin 900-TC16. If the heater power is turned ON after turning power to the Bulletin 900-TC16 ON, the heater burnout alarm will activate.

Notes:

• Control is continued even if the heater burnout alarm is active. That is,

the ON/OFF output type Bulletin 900-TC16 attempts to control the heater on which the heater burnout alarm has not occurred.

• For the heater burnout alarm to activate, the alarm condition must exist

for 190 ms or more.

• The measured current value may sometimes differ slightly from the

actual current flowing to the heater. Check the current value in an actual operating state in the Heater Current Monitor parameter.

• If there is little difference between the current in a normal state and the

current in the burnout state, detection may become unstable. On a heater of current 10.0 A or less, maintain a difference of 1.0 A or more. On a heater of current 10.0 A or more, maintain a difference of 2.5 A or more.

• The HBA function cannot be used when the heater is controlled by an

analog output system. Also, 3-phase heaters cannot be used.

HBA Setup

To activate the heater burnout alarm, set the HBA Used parameter from the Advanced Setting function group to ON and configure the heater burnout activation/trip value in the Heater Burnout Detection parameter (Adjustment function group).

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Example Operation Procedure

In this example, configure the Heater Burnout Detection parameter to 2.5.

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Configuration and Basic Operation 3-31

The default of the Heater Burnout Alarm Used (HBA) parameter is already ON, so configure the Heater Burnout Detection value parameter.

1. Move to the Advanced Setting function group. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 3.56

Operation function group

PV/SP

Initial Setting function group

Input type

2. Then move to Advanced Setting function group by pressing the M key.

Figure 3.57

Move to advanced Setting function group

3. Press the D key to enter the password (–169), and move from the Initial Setting function group to the Advanced Setting function group. The top parameter in the Advanced Setting function group is displayed.

Figure 3.58

Advanced Setting function group

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3-32 Configuration and Basic Operation

4. Select the HBA Used parameter by pressing the M key. Make sure that this parameter is set to ON (default). Next, set the Heater Current Value Monitor parameter.

Figure 3.59

HBA used

5. Press the key for at least 1 second to move from the Advanced Setting function group to the Initial Setting function group and then to the Operation function group.

Figure 3.60

Operation function group

PV/SP

6. Press the key for less than 1 second to move from the Operation function group to the Adjustment function group.

Figure 3.61

Adjustment function group

AT execute/ cancel

7. Select the Heater Current Value Monitor parameter by pressing the M key. Check the current value. Next, set the Heater Burnout Detection value parameter.

Figure 3.62

Heater current value monitor

Heater burnout detection value

8. Select the Heater Burnout Detection value parameter by pressing the M key.

Figure 3.63

9. Configure the current value as a reference value. Adjust this value so that there is a large difference between the current flowing to the heater lead when heater operation is normal and the current flowing when a heater burnout occurs. For example, configure the value to 2.5. To return to the Operation function group, press the key for less than 1 second.

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Configuration and Basic Operation 3-33

How to Calculate Heater Current Detection Values

• Calculate the heater current value to be configured by the following

equation

Calculated value

heater current value at normal operation heater current value at burnout condition+( )

----------------------- ----------------------------- --------------------------------- ---------------------------- ----------------------------- --------------------------------- -------------------------=

• To calculate the value of the heater burnout when two or more heaters

are connected through the CT, use the current value of the smallest heater connected, or the current value when one of the heaters burns out if all the heaters have the same current value.

• Make sure that the following conditions are satisfied:

– Heater current of 10.0 A or less:

Current value at normal operation – current value at heater burnout ≥ 1 A (When the resultant current is less than 1 A, detection is unstable.)

– Heater current of 10.0 A or more:

Current value at normal operation – current value at heater burnout ≥ 2.5 A (When the resultant current is less than 2.5 A, detection is unstable.)

• The allowable heater burnout configuration range is 0.1…49.9 A.

Heater burnout is not detectable when the configured value is 0.0 or

50.0. When the configured value is 0.0, the heater burnout alarm is always OFF, and if the configured value is 50.0, the heater burnout alarm is always ON.

• Configure the total current value at normal heater operation to 50 A or

less. When configured to 55.0 A, ffff is displayed in the Heater Current Monitor parameter.

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3-34 Configuration and Basic Operation

EXAMPLE

When using a 200V AC, 1 kW heater:

Heater

1KW

900-TC16 14 15

Current during normal operation

Control output

AC200V

1000

----------- 5 A <10 A()==

200

Current at heater burnout 0 A=

Set value

Current at normal operation

Current at heater burnout

50+

------------ 2.5 A==

–(

) 50–()5 A ( 1 A)≥==

When using three 200V AC, 1 kW heaters:

Heater

Control output

1KWx3

900-TC16 14 15

Current during normal operation

1000

-----------

200

3× 15 A ( 10 A)≥

Current at burnout of one heater

Set value

15 10+

----------------- 12.5 A==

Current at normal operation

Current at heater burnout

) 15 10–()5 A ( 2.5 A)≥==

AC200V

–(

1000

-----------

200

2× 10 A==

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Configuration and Basic Operation 3-35

Table 3.I Parameters

Symbol Parameter: Function Group Description

System Setup/Operational Considerations

ct Heater Current Value Monitor:

Adjustment function group

hb Heater Burnout Detection:

Adjustment function group

hbh Heater Burnout Hysteresis:

Advanced Setting function group

hbl Heater Burnout Latch:

Advanced Setting function group

To monitor heater current value

For HBA configuration detection

• Allow at least a 30 minute warm-up period for the system to fully

stabilize.

• When self-tuning is used, turn the temperature controller and load (e.g.,

heater) power ON simultaneously or turn the load power ON before the temperature controller. If the load is turned ON before the temperature controller, correct self-tuning and optimum control are no longer possible.

When operation is started after system warm-up, turn the power to the system OFF once after warm-up is completed, and then turn the temperature controller and load power ON simultaneously. (Instead of turning the temperature controller power ON again, moving from the STOP to the RUN mode also is possible.)

• The temperature controller may be subject to the influence of radio

interference if used near a radio, TV, or wireless equipment. For additional information, see Appendix A.

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3-36 Configuration and Basic Operation

Notes:

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Chapter

Parameter Adjustments and Application Considerations

Shifting Input Values

Overview

The Input Shift parameter allows you to configure the controller to compensate for possible deviation of the measured temperature (PV) to the actual temperature at the source (control target). The controller supports two types of input shifts: 1-point and 2-point. The input shift is automatically matched to the sensor currently selected by the Input Type parameter (set value — Table A.D, List of Input Types).

1-Point (Uniform) Shift

Overview

With 1-point shift operation, the Temperature Input Shift parameter (Adjustment function group) is applied to the entire temperature input range in a uniform or consistent manner. In other words, the adjusted value is applied equally to each input/sensor value read by the controller and displayed as such. For example, if the input shift value is set to 1.2°C, the process value is treated as by the controller 201.2°C after input shift is applied when the measured process value is 200°C. (See Figure 4.1.)

Figure 4.1 One-Point Shift

Temperature

Upper-limit value

Lower-limit value

After shift

Before shift

Input shift value

Input

100

Example Operation Procedure — Operation Function Group

In this example, apply a 1°C 1-point shift to the input value of a type K thermocouple sensor.

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4-2 Parameter Adjustments and Application Considerations

1. Press the key to move from the Operation function group to the Adjustment function group.

Figure 4.2

Operation function group

2. Select the Temperature Input Shift parameter by pressing the M key.

Figure 4.3

3. Press the U or D key to set 1.

Figure 4.4

Adjustment function group

Temperature input shift

4. To return to the Operation function group, press the key. The process value is 1°C larger than before the shift was applied.

Figure 4.5

Operation function group

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

2-Point Shift

Overview

2-point shift can be applied only to non-contact temperature sensors (infrared type K thermocouple).

Figure 4.6

Upper-limit temperature input shift value

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Parameter Adjustments and Application Considerations 4-3

• The input temperature range of non-contact temperature sensors can be

shifted by setting an individual value for the upper and lower end points of the sensor range. This means that the shift can be applied equally across the range with separate values for each end of the range. For example, if the upper-limit value is set to 2°C and the lower-limit value is set to 1°C, the sensor range is shifted by an average of 1.5°C at the 50% input.

• Set the upper-limit value in the Upper-Limit Temperature Input Shift

Value parameter and the lower-limit value in the Lower-Limit Temperature Input Shift Value parameter.

Figure 4.7 Two-Point Shift

Temperature

Upper-limit value

Upper-limit temperature input shift value

After shift

Before shift

Lower-limit value

Lower-limit temperature input shift value

100

Input

How to Calculate Input Shift Values (2-Point Shift)

When the non-contact temperature sensor (for example, OMRON ES1A sensor) is connected to the Bulletin 900-TC16, an offset of several degrees to several tenths of a degree can occur. For this reason, it may be desirable to offset the readout value by 1-point or 2-point shift as described here. Note: 2-point shift can be carried out only on non-contact temperature sensors, and cannot be used with other input types.

Preparations

1. Set to the temperature range matching the input specifications of the non-contact temperature sensor. (The non-contact infrared sensor is supported only in thermocouple input type Bulletin 900-TC16 controllers. See Tables 1.A and A.D.)

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4-4 Parameter Adjustments and Application Considerations

2. Prepare a thermometer (B) capable of measuring the temperature of the control target (C) as shown in Figure 4.8 so that 1-point shift or 2-point shift can be carried out.

Figure 4.8 Configuration when Compensating a Non-Contact Temperature Sensor

Infrared non-contact

temperature sensor

(A) 900-TC16

(B) Thermomete

Using the 1-Point Shift Method

Figure 4.9

1. In the temperature control system configuration shown in Figure 4.8, bring the set point to near the value at which the temperature of the control target is to be controlled. Assume that the control target temperature (C) and the control target temperature (B) match.

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2. Check the control target temperature (B) and the controller readout (A). Take the value from the following equation as the input shift value, and configure the same numerical value to ins.

Control target temperature (B) Controller readout (A)– Input shift v

Figure 4.10 shows the effect of 1-point temperature input shift.

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Parameter Adjustments and Application Considerations 4-5

3. After you have configured the 1-point input shift value in the controller, check the controller readout (A) and control target temperature (B). If they are almost the same, this completes temperature input shift procedure.

Figure 4.10 One-Point Temperature Input Shift

Controller readout (A)

Temperature readout after shift (e.g. 120°C)

Temperature readout before shift (e.g. 110°C)

After shift

Input shift value (e.g. 10°C)

Before shift

Near set point (e.g. 120°C)

Temperature readout of control target (B)

Using the 2-Point Shift Method

Use the 2-point input shift feature if you want to increase the accuracy of the readout values across the range of the non-contact sensor.

1. When using the 2-point shift method, shift the controller readout at two points: the first near room temperature, and the second near the value at which the temperature of the control target is to be controlled. Check control target temperature (B) and controller readout (A) at both points.

2. Using equations 1 and 2 (see p. 4-6) calculate the upper- and lower-limit temperature input shift values from the readout and temperature to be shifted that you obtained in step 1.

Figure 4.11 shows the effect of shift by 2-point temperature input shift.

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4-6 Parameter Adjustments and Application Considerations

Figure 4.11 Two-Point Temperature Input Shift

Controller readout (A)

Set temperature upper limit YH (e.g. 260°C)

After shift

Temperature readout after input shift X2 (e.g. 110°C)

Temperature readout before input shift Y2 (e.g. 105°C)

Temperature readout before input shift Y1 (e.g. 40°C)

Temperature readout after input shift X1 (e.g. 25°C)

Lower-limit temperature input shift value

X1 room temperature

(e.g. 25°C)

Set temperature lower limit YL (e.g. 0°C)

– Equation 1: Use the following equation to calculate the lower-limit

temperature input shift value.

insl

– Equation 2: Use the following equation to calculate the upper-limit

temperature input shift value.

insh

Figure 4.12

Adjustment function group

Upper-limit temperature input shift value

YL Y1–

--------------------

Y2 Y1–

YH Y1–

--------------------Y2 Y1–

Upper-limit temperature input shift value

Before shift

Temperature readout of control target (B)

Near X2 set point (e.g. 110°C)

X2 Y2–()X1 Y1–()–{}X1 Y1–()+×=

Lower-limit temperature input shift value

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Note: For meanings of variables, see Figure 4.11.

3. After you have configured the calculated values in the controller to

insl and insh, compare controller readout (A) with the control target temperature (B).

4. Although the input shift was carried out at two points, close to room temperature (ambient temperature), and near to the set point, select points close to each end of the sensor range to improve accuracy across the full range of the sensor measurement range.

Note: Before selecting these values, check that they will not damage the control application if applied.

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Parameter Adjustments and Application Considerations 4-7

EXAMPLE

In this example, the non-contact (infrared) sensor type K 0…260°C specification is used to do a 2-point shift.

YL an YH in equations 1 and 2 are set temperature lower limit (YL = 0°C) and set temperature upper limit (YH = 260°C). Check the temperature of the control target.

When the room temperature (X1) is 25°C, the readout on the controller (Y1) is 40°C, and when the temperature near the set point (X2) is 110°C, the readout on the controller (Y2) becomes 105°C.

Lower-limit temperature input shift value:

Adjustment function group

Lower-limit temperature input shift value

110 105–()25 40–()–{}25 40–()+×

insl

040–

-------------------105 40–

–27.3°C

Upper-limit temperature input shift value:

Upper-limit temperature input shift value

insh

260 40–

-------------------105 40–

110 105–()25 40–()–{}25 40–()+×

–52.7°C

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4-8 Parameter Adjustments and Application Considerations

Alarm Functions/ Parameters

Alarm Hysteresis

You can configure how much deviation (hysteresis) is allowed from the alarm value before the alarm comes ON and resets to OFF. The hysteresis of alarm outputs, or when alarms are actually switched ON and OFF, can be configured as follows:

Figure 4.13

Upper-limit

OFF

alarm

Normal Operating Area

Alarm hysteresis

Alarm value

Alarm hysteresis is independently set for each alarm (1 and 2) in the Alarm Hysteresis 1 and Alarm Hysteresis 2 parameters (Advanced Setting function group). Note: The default is 0.2 (°C or °F depending on your units selection).

OFF

Lower-limit alarm

Alarm value

Alarm hysteresis

Normal Operating Area

Standby Alarm Sequence

Standby alarm sequence is a function which allows you to configure the alarm outputs to be temporarily disabled until after the first alarm condition occurs. From then on, the alarm output is active for all future alarm conditions (see Table 3.H).

For example, in a standard heating application, if you used the standard low alarm configuration, the alarm would be active as soon as you switch the controller ON. However, with standby sequence, the alarm output is disabled during the first warm-up, and the temperature has to rise above the alarm set point before the alarm can become active. Then, if the temperature falls below the alarm set point, the output is active.

Restart

As mentioned above, the standby sequence is canceled after the first real alarm condition clears. If desired, it can be restarted later by the Standby Sequence Reset parameter (Advanced Setting function group). For details, see p. 5-40, Standby Sequence Reset Method.

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Alarm Latch

Alarm latch is a function where you can configure the alarm output once turned ON to stay ON regardless of the process temperature.

The alarm latch function can be canceled by turning the controller power OFF. (Note, however, that it can also be canceled by switching to the Initial Setting function group, Communications Setting function group, Advanced Setting function group, or Calibration function group.

Alarm Output Close in Alarm or Open in Alarm

When the Bulletin 900-TC16 alarm output(s) is configured to close in alarm, the status of the alarm output is normally open. When configured to open in alarm, the status of the alarm output is inverted or, in relay logic terms, normally closed (see Table 4.A).

The alarm type (see Table 3.H) and Close in Alarm (normally open)/Open in Alarm (normally closed) parameters can be independently configured for each alarm output.

The close in Alarm/Open in Alarm condition is configured in the Alarm 1 and 2 Open in Alarm parameters in the Advanced Setting function group. Note: The default is n-o: close in alarm.

Table 4.A

Parameter Configuration

Close in alarm ON ON Lit

Open in alarm ON OFF Lit

Alarm Condition

OFF OFF Out

OFF ON Out

Alarm Output

Alarm LCD

The alarm output turns OFF (relay contact open) during a power interruption to the controller and for about 2 seconds after the power is turned ON regardless of the close in alarm/open in alarm configuration.

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Summary of Alarm Operations

Figure 4.14 below visually summarizes the description of alarm operations when alarm type is set to lower-limit alarm with standby sequence and the Bulletin 900-TC16 is configured to close in alarm.

Figure 4.14

Alarm value

Alarm

output

Alarm type: lower-limit alarm with standby sequence

Standby sequence canceled

Alarm hysteresis

Time

ON OFF

ON (closed) OFF (open)

Configuration of Scaling Upper and Lower Limits (0…50 mV Analog Input)

Table 4.B Alarm Parameters

Symbol Parameter: Function Group Description

alh_ Alarm 1 and 2 Hysteresis:

Alarm

Advanced Setting function group

rest Standby Sequence Reset Method:

Alarm

Advanced Setting function group

al_n Alarm 1 and 2 Open in Alarm:

Alarm

Advanced Setting function group

_ = Output 1 or 2

Figure 4.15

Scaling upper limit

Decimal point

Overview

Scaling lower limit

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When an analog input (0…50 mV voltage input) is selected, scaling to specific engineering units (e.g., lbs) that match the application is possible.

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Parameter Adjustments and Application Considerations 4-11

Scaling is set in the Scaling Upper Limit, Scaling Lower Limit, and Decimal Point parameters (Initial Setting function group). These parameters cannot be used when a temperature input type is (e.g., RTD) selected.

The Scaling Upper Limit parameter allows you to configure the physical quantity to be expressed by the upper limit input value, and the Scaling Lower Limit parameter allows you to configure the physical quantity to be expressed by the lower-limit input value. The Decimal Point parameter specifies the number of digits past the decimal point.

Figure 4.16 shows a scaling example of a 0…50 mV input. After scaling, the sensor input can be directly read from the controller as a percentage of humidity. However, the display will not indicate %, only a value.

Figure 4.16 Input Scaling

Readout (humidity)

Upper-limit value (95.0%)

50 mV

Lower-limit value (10.0%)

0mV

100%FS

Input (0…50 mV)

Example Operation Procedure

In this example, configure the scaling upper- and lower-limits so that inputs 0…50 mV become 10.0% to 95.0%.

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 4.17

Initial Setting function group

Input type

2. Select Scaling Upper Limit by pressing M.

Figure 4.18

Scaling upper limit

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4-12 Parameter Adjustments and Application Considerations

3. Press the U or D key to set the parameter to 950.

Figure 4.19

4. Select Scaling Lower Limit by pressing M.

Figure 4.20

5. Press the U or D key to set the parameter to 100.

Figure 4.21

6. Select the decimal point position by pressing M.

Figure 4.22

Scaling lower limit

Decimal point

Executing the Heating and Cooling Control Mode

7. Press the U or D key to set the parameter to 1.

Figure 4.23

8. To return to the Operation function group press the key for at least 1 second.

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

Overview

Several forms/modes of heating, cooling, or heating and cooling control can be used with the Bulletin 900-TC16 controller. The heating and cooling control mode operates when h-c: heating and cooling is selected in the Standard/Heating and Cooling parameter from the Initial Setting function group. Select the control mode according to the Table 4.C:

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Parameter Adjustments and Application Considerations 4-13

Table 4.C Output to Control Mode Assignment

Setting Output

Output

Control Mode Direct/Reverse

Operation

Control Output 1 Control Output 2

(ALM2)

Standard control Reverse operation Control output (heat) — Standard control Direct operation Control output (cool) — Heating and cooling

Reverse operation Control output (heat) Control output (cool)

control Heating and cooling

Direct operation Control output (cool) Control output (heat)

control

Note: The default is heating control (standard control mode, reverse operation).

Dead Band (Heating and Cooling Control)

When the heating and cooling control method is selected, the Dead Band parameter can be used. The dead band is configured with the set point as its center (see Figure 4.24). The dead band width is the configured value of the Dead Band parameter (Adjustment function group). Setting a negative dead band value produces an overlap band. Note: The default is 0.0%EU.

Figure 4.24 Dead Band

Dead band: dead band width = positive

Output

Overlap band: dead band width = negative

Heating side

Set point

Cooling side

Heating side Cooling side

PV PV

Set point

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4-14 Parameter Adjustments and Application Considerations

Cooling Coefficient (Heating and Cooling Control)

When the heating and cooling control mode and PID control method are selected, the Cooling Coefficient parameter can be used. If the heating and cooling functional characteristics of the control target greatly differ, this could limit satisfactory control performance from being obtained by the same PID values. To reduce the possibility of this occurring, adjust the proportional band (P) at the cooling side of the set point using the cooling coefficient to balance control between the heating and cooling sides. In heating and cooling control, the proportional band (P) at the heating or cooling (output) side is calculated by the following formula:

Control output 1 (heating side): P P=

control output 2 (cooling side): P P cooling (output 2) coefficient×=

(See Figure 4.25.)

The control output 2 (cooling side) coefficient is applied to the control output 1 (heating side) proportional band (P) to obtain control with characteristics that differ from those at control output 1 (heating side).

Figure 4.25 Cooling Coefficient

Output

Control output 1 Heating side P

Control output 2 Cooling side P

Set point

Control output 1 side Px0.8

Control output 1 side Px1.0

PV PV

Output

Control output 1 side Px1.0

Control output 1 Heating side P

Control output 1 side Px1.5

Set point

Control output 2 Cooling side P

Setup of Heating and Cooling

To configure the heating and cooling control mode, set the Standard/Heating and Cooling, Dead Band, and Cooling Coefficient (when using PID) parameters.

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Example Operation Procedure — Heating and Cooling Control Selection

Standard/heating and cooling = Heating and cooling

1. Press the key for at least 3 seconds to move from the Operation

function group to the Initial Setting function group.

2. Select heating and cooling control in the Initial Setting function group.

stnd: Standard control h-g: Heating and cooling control

Figure 4.26

Initial setting level

Standard/heating and cooling

Example Operation Procedure — Configuring the Dead Band

Dead band = 5

1. Select Dead Band in the Adjustment function group.

Figure 4.27

Adjustment function group

Dead band

2. Press the U key to set the parameter to 5.0. The setting range is –199.9…+999.9.

Figure 4.28

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4-16 Parameter Adjustments and Application Considerations

Example Operation Procedure — Configuring the Cooling Coefficient

Cooling coefficient = 10

1. Select Cooling Coefficient in the Adjustment function group. In this

example, set the parameter to 10.

Figure 4.29

Adjustment function group

2. Press the U key to set the parameter to 10.00. The setting range is

0.01…99.99.

Figure 4.30

Cooling coefficient

Using the Event Input Feature

Overview

Discrete (ON/OFF) inputs can be wired to the Bulletin 900-TC16 (option unit Cat. No. 900-TC16EIM or 900-TC16ACEIM installed) to cause the controller to perform several pre-defined/pre-configured tasks. These inputs are generically called event inputs. The pre-defined functions provided are controller RUN/STOP control and/or multi-set point selection.

Setting Event Input

RUN/STOP operation of the controller and multi-set point capability can be executed by the Event Input Assignment 1 and 2 parameters. Table 4.D shows which functions are assigned to event inputs 1 and 2.

RUN/STOP is assigned to inputs not used for multi-SP of event inputs 1 and 2 by the Event Input Assignments 1 and 2 configured in the Advanced Setting function group.

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Table 4.D

Parameter Adjustments and Application Considerations 4-17

Number of Multi-SP Uses Parameter

Event Input Assignment 1 Parameter

Configuration Event Input Function

Event Input

Event Input 1 Event Input 2 Assignment 2 Parameter

0 NONE or STOP ➊ NONE or RUN/STOP switching ➊ 1 — (not

displayed)

NONE or STOP Multi-SP 2 set

points (set point

0/1 switching)

NONE or RUN/STOP switching

2 — (not displayed) Multi-SP 4 set points

(set point 0/1/2/3 switching)

➊ STOP (RUN/STOP) switching can be set only on one of event input assignments 1 or 2. The event input on the

side that is set can be used. The setting on the other side becomes NONE.

When you want to configure two external inputs to be used to change the controller set points, use in the Number of Multi-SP Uses parameter.

Two set points (0 or 1) can be selected when the Number of Multi-SP Uses parameter is set to 1 (default). This setting need not be changed. Set point 0 or 1 is specified by the ON/OFF state of event input 1.

Figure 4.31 Event Inputs

900-TC16

Contact Inputs

Temperature Controller

EV1 EV2

Note:

EV1

EV2

Do not connect any external power source to these terminals. The controller sources power to the inputs.

Do not apply an external voltage source

Note:

to the Event Input Terminals.

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4-18 Parameter Adjustments and Application Considerations

Multi-SP

Selecting Multi-SP by Event Input

Multi-SP by event input is a function for setting the value of set points 0…3 in advance, and selecting these set points by combination of event inputs 1 and 2.

Multi-SP selection from external (event) inputs can be used when the option event input unit Cat. No. 900-TC16EIM or 900-TC16ACEIM is mounted in the Bulletin 900-TC16 and the Number of Multi-SP Uses parameter is configured to 1 or 2 (see Tables 4.D, 4.E, and 4.F).

Table 4.E When Number Of Multi-SP Uses Parameter is Set to 1

Event Input 1 Selected Set Point

OFF Set point 0 ON Set point 1

Table 4.F When Number of Multi-SP Uses Parameter is Set to 2

Event Input 1 Event Input 2 Selected Set Point

OFF OFF Set point 0 ON OFF Set point 1 OFF ON Set point 2 ON ON Set point 3

Note: The option unit Cat. No. 900-TC16EIM or 900-TC16ACEIM must be installed in the Bulletin 900-TC16 controller to use the event input feature. The input must be on for 50 ms minimum for the controller to recognize its operation.

Selecting Multi-SP by Keypad Operation

You can select set points 0…3 from the controller keypad by properly configuring the value of the Multi-SP parameter. To change set points from the controller keypad, the Multi-SP parameter conditions are as follows:

• When the option event input unit Cat. No. 900-TC16EIM or

900-TC16ACEIM is not mounted in the Bulletin 900-TC16, and multi-SP is configured as ON, or

Publication 900-UM001C-EN-E - January 2004

• When the option event input unit Cat. No. 900-TC16EIM or

900-TC16ACEIM is mounted in the Bulletin 900-TC16, the Number of Multi-SP Uses parameter is configured to 0 and the Multi-SP parameter is configured to ON.

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Parameter Adjustments and Application Considerations 4-19

The following table shows the relationship between the Multi SP parameter value and the selected set point.

Table 4.G

Multi-SP Value Selected Set Point

0 Set point 0 1 Set point 1 2 Set point 2 3 Set point 3

Multi-SP Setup

Example Operation Procedure — to Select Set Points (0/1/2/3)

Before you configure the Number of Multi SP Uses parameter, you must first cancel protection from the Advanced Setting function group. For additional details on how to cancel protection, see p. 4-28, Using the Key Protect Function Group.

1. Press the key for at least 3 seconds to move from the Operation function group to the Initial Setting function group.

Figure 4.32

Operation function group

PV/SP

Initial Setting function group

Input type

2. Select Move to Advanced Setting Function Group by pressing the M key.

Figure 4.33

Move to advanced setting function group

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4-20 Parameter Adjustments and Application Considerations

3. Press the D key to enter the password (–169) to cancel protection. You can now move to the Advanced Setting function group by pressing the M key or leaving the setting for at least 2 seconds.

Figure 4.34

4. Select Number of Multi-SP Uses parameter by pressing the M key.

Figure 4.35

Number of multi-SP uses setting

5. Press the U key to set the parameter to 2. This allows set point change from event inputs (see Table 4.D).

Figure 4.36

Advanced setting function group

Parameter initialize

Number of multi-SP uses

6. To return to the Initial Setting function group press the key for at least 1 second.

7. To return to the Operation function group press the key for at least 1 second.

The pre-configured values for set points 0, 1, 2, and 3 are now selectable according to the ON/OFF states of event inputs 1 and 2.

Figure 4.37 Event Inputs

Temperature controller

Temperature Controller

Do not apply an external voltage source

Note:

to the Event Input Terminals.

EV1

EV2

EV1

EV2

Do not apply an external voltage source

Note:

to the Event Input Terminals.

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Executing RUN/STOP Controller Mode Change

When the Event Input Assignment 1 or Event Input Assignment 2 parameter is set to RUN/STOP (see Table 4.I), control is started (RUN) when event input 1 or 2 is OFF. Control is stopped when event input 1 or 2 is ON. While control is stopped, the controller’s STP (stop) display lights.

Table 4.H

Setting Input Contact Controller Mode

Event input 1 or 2 ON STOP Event input 1 or 2 OFF RUN

Note: The Multi-SP Uses parameter must be set to 0 or 1 for RUN/STOP control by event inputs to function (see Table 4.I).

The function of Event Input Assignment 1 and 2 parameters is as follows according to the Number of Multi-SP Uses parameter value configured.

Table 4.I

Number of Multi-SP Uses Parameter Setting

0 NONE STOP NONE RUN/STOP

1 — (setting data

2 — (setting data

➊ Default configuration

Event Input Assignment 1 Parameter

STOP ➊ NONE ➊ RUN/STOP

NONE NONE NONE NONE

not displayed)

— (setting data not displayed)

not displayed)

Configuration Event Input Function

Event Input Assignment 2 Parameter

STOP Multi-SP 2 set

NONE Multi-SP 2 set

— (setting data not displayed)

Event Input 1 Event Input

switching NONE ➊

switching ➊

RUN/STOP points (set point 0/1 switching)

points (set point 0/1 switching)

Multi-SP 4 set points (set point 0/1/2/3 switching)

switching

NONE or

RUN/STOP

switching

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4-22 Parameter Adjustments and Application Considerations

• When the Number of Multi-SP Uses parameter is configured to either 1

or 2, and the Event Input Assignment 1 or 2 parameter is configured to not displayed, the setting automatically be comes none.

• When the Number of Multi-SP Uses parameter is configured to 0, and it

is possible that both Event Input Assignment 1 and 2 parameters can be ON, RUN/STOP is assigned to only one event assignment. The other Event Input Assignment is automatically set to OFF.

• When the RUN/STOP mode function is selected by event inputs,

RUN/STOP at the run level is not displayed.

Table 4.J Parameters

Symbol Parameters: Function Group Description Page

Configuring the Upper and Lower Set Point (SP) Limit Values

Setting range

Changed to upper limit value

Input type changed

Set point Upper- and lower-limit values of the limitter

Sensor upper- and lower-limit values

ev-1 Event Input 1 Assignment:

Advanced Setting function group

ev-2 Event Input 2 Assignment:

For selecting the event input function

5-38

Advanced Setting function group

ev-n Number of Multi-SP Uses:

5-37

Advanced Setting function group

Set Point Limitter

The maximum configurable range of the set point is limited by the Set Point limitter function. The set point limitter is used to prevent someone from configuring the set point to some value outside the maximum range called for by the application, thereby preventing the control target from reaching abnormal temperatures. The upper- and lower-limit values of the set point limitter are configured from the Set Point Upper Limit and Set Point Lower Limit parameters in the Initial Setting function group, respectively.

Figure 4.38

Sensor range

Set point limitter

Set point

Changed to the new upper limit value

Set point

(setting possible) (setting not possible)

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Parameter Adjustments and Application Considerations 4-23

Application Considerations

• If a change is made to the set point upper and/or lower limit value with

the current set point outside the limitter range, the set point is forcibly changed by the controller to the sensor’s upper SP limit or lower SP limit value, whichever is closer.

• When the input type or temperature unit are changed, the set point

limits are forcibly reset to the sensor range.

Table 4.K Parameters

Symbol Parameters: Function Group Description Page

sl-h Set Point Upper Limit: Initial Setting

function group

sl-l Set Point Lower Limit: Initial Setting

function group

For limiting the SP setting

5-28

Set Point Limit Setup

To configure the Set Point Upper and Lower Limit parameters, you must be in the Initial Setting function group. The following example describes how to configure the set point limit when using a type K thermocouple (normal full range: –200…1300°C).

Figure 4.39

-200 1300

Normal/Full Sensor range (Type K thermocouple)

Set point limitter range

1000-100

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4-24 Parameter Adjustments and Application Considerations

Example Operation Procedure — Configuring the Set Point Upper Limit

Configure the Set Point Upper Limit parameter value to 1000.

1. Press the key for at least 3 seconds to move from the Operation

function group to the Initial Setting function group.

Figure 4.40

Initial setting level

2. Select Set Point Upper Limit parameter.

Figure 4.41

3. Press the U or D key to configure the parameter value to 1000.

Figure 4.42

Input type

Set point upper limit

Example Operation Procedure — Configuring the Set Point Lower Limit

Configure the Set Point Lower Limit parameter value to –100.

1. Select Set Point Lower Limit in the Initial Setting function group.

Figure 4.43

Set point lower limit

2. Press the U or D key to configure the parameter value to –100.

Figure 4.44

Note: The newly configured value or parameter is loaded into controller memory if you do not operate any key on the front panel for at least 2 seconds or by pressing the or M key.

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Executing the SP Ramp Function (Limiting the SP Rate of Change)

SP Ramp

With the SP ramp function, the controller can limit the rate at which a change in the set point will impact the control according to the user-defined SP ramp value. The time interval in minutes which the set point is limited is referred to as the SP ramp.

Figure 4.45

SP after change

SP before change

Change point

The maximum allowed rate of change during SP ramp is specified by the configured SP Ramp Set Value parameter. Note: The SP Ramp Set Value default is OFF, and the SP ramp function is normally disabled.

SP ramp

SP ramp value

Time

unit of ramp rate (min.)

Time (min.)

Changing the ramp set point can be monitored in the Set Point during SP Ramp parameter (Operation function group). Use this parameter during monitoring of the SP ramp.

Operation is also the same during switching of the set points by the Multi-SP parameter.

SP Ramp Application Considerations

Operation at Start-Up

If the SP ramp function is enabled when the Bulletin 900-TC16 is turned ON, or when RUN is switched to from STOP, the process value (PV) may reach the Set Point SP Ramp value in the same way as when the set point is changed. In this case, operation is carried out by the controller with the process value regarded as the set point before the change was made.

The direction of the SP ramp changes according to the relationship between the process value and the set point (see Figure 4.46).

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4-26 Parameter Adjustments and Application Considerations

Figure 4.46

Set point

PV < SP

SP SP

SP ramp

Set point

Time

Power ON

PV > SP

SP ramp

Power ON

Restrictions During SP Ramp Operation

• Auto-tuning execution starts after the end of SP ramp.

• When control is stopped or an error occurs, the SP ramp function is

disabled.

Table 4.L Parameters

Symbol Parameters: Function Group Description

sl-h Set Point Upper Limit:

Initial Setting function group

For limiting SP setting

Same change rate

Time

To Move to the Advanced Setting Function Group

sl-l Set Point Lower Limit:

For limiting SP setting

Initial Setting function group

sprt SP Ramp Set Value:

For limiting SP change rate

Advanced Setting function group

By default, the Advanced Setting function group is protected and you cannot directly move to the function group. To move to this function group, you must first cancel the protection applied by the Protect function group. See p. 4-28, Using the Key Protect Function Group.

Example Operation Procedure

1. Press the and M keys simultaneously for at least 3 seconds in the

Operation function group. The key pressing time can be changed in the Protect function group move time, which is in the Advanced Setting function group.

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Parameter Adjustments and Application Considerations 4-27

2. The controller moves to the Protect function group, and Operation/Adjustment Protection is displayed.

Figure 4.47

Protect function group

Operation/ adjustment protection

3. Press the M key once to move to Initial Setting/Communications Protection.

Figure 4.48

Initial setting/ communications protection”

4. Configure the value to 0.

Figure 4.49

5. Press the and M keys simultaneously to return to the Operation function group.

Figure 4.50

Operation function group

PV/SP

6. Press the key for at least 3 seconds to move to the Initial Setting function group from the Operation function group.

Figure 4.51

Initial Setting function group

Input type

7. Select the Move to Advanced Setting Function Group parameter by pressing the M key.

Figure 4.52

Move to Advanced setting function group

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4-28 Parameter Adjustments and Application Considerations

8. Press the D key to enter the password (–169), and either press the M key or leave the setting for at least 2 seconds to move to the Advanced Setting function group from the Initial Setting function group.

Figure 4.53

Advanced setting function group

Using the Key Protect Function Group

Key Protect

The Key Protect feature prevents some keypad functions from working. Three different modes of protection are provided: Operation/Adjustment protection, Initial Setting/Communications protection, and Configuration Change protection.

To move to the Key Protect function group, press the and M keys simultaneously for at least 3 seconds.

The Key Protect function group setting restricts the type of parameters that can be used.

Operation/Adjustment Protection

Figure 4.54

Protect function group

The following table shows the relationship between configured/set values and the level of protection.

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When this parameter is configured to 0, parameters are not protected. Note: The default is 0.

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Parameter Adjustments and Application Considerations 4-29

Table 4.M Operation Protection

Function Group Configured/Set Value

0 ➊ 123

Operation function group

PV PV/SP Other X X

Adjustment function group X X X

Level of Protection:

Can be displayed and changed.

Can be displayed. X Cannot be displayed and moving to other function groups is not possible. ➊ Default

Initial Setting/Communications Protection

This portion of the Key Protect function group restricts movement by keypad operation to the Initial Setting function group, Communications Setting function group, and Advanced Setting function group (see Table 4.N).

Figure 4.55

Note: The default is 1.

Table 4.N Initial Setting/Communications Protection

Configured Value

0 1 ➋ X 2X X X

Level of Protection:

Moving to other function groups is possible. X Moving to other function groups not possible. ➋ Default

Initial Setting Function Group

Communications Setting Function Group

Advanced Setting Function Group

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4-30 Parameter Adjustments and Application Considerations

Configuration Change Protection

This portion of the Protect function group protects setup from being changed by

operating the keys on the front panel (see Table 4.O).

Figure 4.56

Note: The default is OFF.

Table 4.O Configuration Change Protection

Configured Value

OFF ➊ Setup can be changed by key operation. ON Setup cannot be changed by key operation. (The Protect function group

➊ Default

Description

can be changed.)

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