Temperature Controller - Staveb AG

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D-4 GlossaryFuzzy Logic: A rule-based control algorithm that enables control devices tomake subjective judgments in a way similar to human decision-making. Withina process controller, fuzzy logic uses some basic information about the system,which is input by the user, to emulate the way an expert operator who wasmanually controlling the system would react to a process upset.Heat Sink: An object that conducts and dissipates heat away from an object incontact with it. Solid-state relays usually use a finned aluminum heat sink todissipate heat.Hot Junction and Cold Junction: If a thermocouple is generating a voltage,this means that there is a temperature difference between the two ends of thethermocouple. The hot end is the one that makes contact with the temperatureprocess being controlled. The cold end is at the sensor input terminals.Hunting: Oscillation of the process temperature between the set point andthe process variable. Derivative control is used in the control algorithm toreduce hunting.Hysteresis (Dead Band): A temperature band between the ON and OFF ofan output in the ON/OFF control action. No heating or cooling takes place.The band occurs between the ON and OFF points.Infrared: The portion of the electromagnetic spectrum with wavelengthsranging from one to 1000 microns. These wavelengths are ideal for radiantheating and non-contact temperature sensing.Input Digital Filter: A device used to sample the input slower than the scanrate to allow the controller to monitor an input that changes very rapidly andstill have sufficient information from the process to control it.Input Scaling: The ability to scale input readings (% of full scale) to theengineering units of the process variable.Input Type: The type of device used to provide a signal of temperaturechange. These include thermocouples, RTDs, linear or process current, orvoltage inputs.Integral Action (I): Control action that eliminates offset, or droop, betweenset point and actual process temperature. This is the “I” in the PID controlalgorithm.Joint Industrial Standards (JIS): A Japanese agency that establishes andmaintains standards for equipment and components. Its function is similar toGermany’s Deutsche Industrial Norm.Linearity: A measure of the deviation of an instrument’s response from astraight line.Publication 900-UM003C-EN-E - January 2004
Glossary D-5Loop Break Alarm: This alarm indicates a problem in the control loop, e.g., asensor has become disconnected or a problem has developed with the finalcontrol element.Manipulated Variable: The final output percentage (0…100%) that will besent to a control element. This percentage can be related to a valve position, a4…20 mA signal, or the amount of ON time from a pulsed control output.Manipulated Variable Limiting: A control option used when the processcannot handle the full output of the heater or final control device. To limit themanipulated variable, the user programs the controller so that it never sends a100% output to the final control element.Manual Mode: A selectable mode that has no automatic control aspects. Theuser sets the output levels.Multiple Set Points: Two or more set points independent from each otherwhich can be set in the temperature controller.National Electrical Manufacturers Association (NEMA): The UnitedStates organization that establishes specifications and ratings for electricalcomponents and apparatus. Conformance by manufacturers is voluntary.However, Underwriters Laboratories will test products to NEMA ratings foroperating performance and enclosure ratings.National Institute of Standards and Technology (NIST): Formerly theNational Bureau of Standards, this United States agency is responsible forestablishing scientific and technical standards.NEMA 4X: This enclosure rating specification certifies that a controller’sfront panel resists water washdown and is corrosion-resistant in indoor usage.Normal Action: A control action which will increase the control output if theprocess value is higher than the set point. This action is suitable for a coolingsystem.Offset: A controlled deviation (the difference in temperature between the setpoint and the actual process temperature) remaining after a controlled systemreaches its steady state. The offset (droop) is created by the correlationbetween the thermal capacity of the controlled system and the capacity ofheating equipment.ON/OFF Control Action: A control action which turns the output fully onuntil the set point is reached, and then turns off. Also called “two-position”control action.Overshoot: The number of degrees by which a process exceeds the set pointtemperature.Publication 900-UM003C-EN-E - January 2004
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Table of Contentstoc-iiiExecuting t
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Table of Contentstoc-vMemory Error
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PrefaceSafety PrecautionsSafety Sig
Page 13 and 14:
Chapter 1Bulletin 900-TC32 Input an
Page 15 and 16:
Bulletin 900-TC32 Input and Output
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Bulletin 900-TC32 Input and Output
Page 19 and 20:
Chapter 2PreparationsHardware Insta
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Preparations 2-3System Wiring and I
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Preparations 2-5ATTENTION!• Clean
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Preparations 2-7Removing and Attach
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Preparations 2-9• Separate input
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Preparations 2-11Wiring Control Out
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Preparations 2-13Figure 2.12 Commun
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Chapter 3Configuration and Basic Op
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Configuration and Basic Operation 3
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Chapter 4Parameter Adjustments and
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Parameter Adjustments and Applicati
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Chapter 5Parameter Functions and De
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Parameter Functions and Definitions
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Page 107 and 108: Parameter Functions and Definitions
Page 127 and 128: Chapter 6Troubleshooting and Error
Page 129 and 130: Troubleshooting and Error Indicatio
Page 131 and 132: Appendix ASpecificationsFor the set
Page 133 and 134: A-3Sensor Input SettingRangesTable
Page 135 and 136: Appendix BParameter Operations List
Page 137 and 138: B-3Table B.C Initial Setting Functi
Page 139 and 140: B-5Figure B.1Power ONOperationfunct
Page 141 and 142: B-7Advanced setting function groupP
Page 143 and 144: Appendix CCalibrationParameter Stru
Page 145 and 146: Calibration C-3User CalibrationCali
Page 147 and 148: Calibration C-51. Connect the power
Page 149 and 150: Calibration C-713. Allow the count
Page 151 and 152: Calibration C-91. Connect the power
Page 153 and 154: Calibration C-11Platinum Resistance
Page 155 and 156: Appendix DGlossaryAdaptive Tuning:
Page 157: Glossary D-3Deviation: A departure
Page 161 and 162: Glossary D-7Serial Communications:
Page 164 and 165: Back Coverwww.rockwellautomation.co
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Temperature Controller - Staveb AG

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