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-DIN,
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-DIN &
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- DIN Controllers & Indicators - Product Manual
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16
Setpoint
Process Variable
SP – Initial PV
2
Initial PV
Pre-Tune
+100% Power (HEAT output)
engaged
here
Control Power
-100% Power (Cool output)
Figure 44.
Pre-Tune Operation
Also refer to Auto Pre-Tune, Automatic Reset, On-Off Control, Input Span, PID, Primary
Proportional Band, Process Variable, Rate, Secondary Proportional Band, Self-Tune,
Setpoint, Setpoint Ramping and Tuning.
Primary Output Power Limit
Type: Controller Parameter
Used to limit the power level of the Primary Output and may be used to protect the process
being controlled. It may be adjusted between 0% and 100%. This parameter is not
applicable if the primary output is set for On-Off control.
Display code is ,-N< , default value = 100%
Also refer to On-Off Control.
Primary Proportional Band
Type: Controller Tuning Parameter
The portion of the input span over which the Primary Output power level is proportional to the
process variable value. It may be adjusted in the range 0.0% (ON/OFF) to 999.9%. The
Display value = -6B- , default value = 5.0%.
Also refer to On-Off Control, Input Span, Overlap/Deadband, PID, Secondary Proportional
Band, and Tuning.
Process High Alarm 1 Value
Type: General Parameter
This parameter, applicable only when Alarm 1 is selected to be a Process High alarm,
defines the process variable value above which Alarm 1 will be active. Its value may be
adjusted between Scale Range Upper Limit and Scale Range Lower Limit.
Display code = -)52 , Default value = Scale Range Upper Limit.
Also refer to Alarm Operation, Process High Alarm 2 Value, Process Variable, Scale Range
Lower Limit and Scale Range Upper Limit.
Page 120
Glossary
59305, Issue 5 – March 2005
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