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E5CNH E5AN-H E5EN-H Digital Controllers User's Manual - OMRON

E5CNH E5AN-H E5EN-H Digital Controllers User's Manual - OMRON

E5CNH E5AN-H E5EN-H Digital Controllers User's Manual - OMRON

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Conventions Used in This <strong>Manual</strong><br />

Meanings of Abbreviations<br />

The following abbreviations are used in parameter names, figures and in text explanations. These<br />

abbreviations mean the following:<br />

Symbol Term<br />

PV Process value<br />

SP Set point<br />

SV Set value<br />

AT Auto-tuning<br />

ST Self-tuning<br />

HB Heater burnout<br />

HS Heater short (See note 1.)<br />

OC Heater overcurrent<br />

LBA Loop burnout alarm<br />

EU Engineering unit (See note 2.)<br />

RSP Remote SP<br />

LSP Local SP<br />

Note: (1) A heater short indicates that the heater remains ON even when the control output from the <strong>Digital</strong><br />

Controller is OFF because the SSR has failed or for any other reason.<br />

(2) “EU” stands for Engineering Unit. EU is used as the minimum unit for engineering units such as °C,<br />

m, and g. The size of EU varies according to the input type.<br />

For example, when the input temperature setting range is –200 to +1300°C, 1 EU is 1°C, and when<br />

the input temperature setting range is –20.0 to +500.0°C, 1 EU is 0.1°C.<br />

For analog inputs, the size of EU varies according to the decimal point position of the scaling setting,<br />

and 1 EU becomes the minimum scaling unit.<br />

xvii

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