Preface, Preface conventions used in this manual, Meanings of abbreviations – Rockwell Automation 900-TC32 Digital Temperature Controllers, Series B User Manual
Page 15
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Publication 900-UM007C-EN-E - January 2011
Preface
Conventions Used in This
Manual
Meanings of Abbreviations
The following abbreviations are used in parameter names, figures, and in text
explanations. These abbreviations mean the following:
➊ A heater short indicates that the heater remains ON even when the control output from the Temperature
Controller is OFF because the SSR has failed or for any other reason.
➋ “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.
For example, when the input temperature setting range is –200…+1300
°C, 1 EU is 1°C, and when the input
temperature setting range is –20.0…+500.0
°C, 1 EU is 0.1°C.
For analog inputs, 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 of terms used in this manual, refer to
Appendix D,
Glossary.
Table P.A
Symbol
Term
PV
Process value
SP
Set point
SV
Set value
AT
Auto-tuning
ST
Self-tuning
HB
Heater Burnout
HS
Heater Short
➊
EU
Engineering unit
➋
OC
Overcurrent
LBA
Loop Burnout Alarm