Function
Prompt
Selections or Range
of Setting
Parameter Definition
limit range. For example, if SP = 1500 and the SP HiLIM is changed to 1200, the
new local setpoint will be 1200.
If PV source is one of the Analog Inputs, then the SP High Limit and SP Low Limit
values must be between the Input High and Input Low values for the input type
configured. If the PV source is an Input Algorithm configured for:
l
Carbon Potential; then the SP High Limit and SP Low Limit values must be
between 0.000 and 2.000.
l
Dewpoint; then the SP High Limit and SP Low Limit values must be between -50
and +100.
l
Oxygen; then the SP High Limit and SP Low Limit values must be between 0 and
40.00.
l
Weighted Average, Summer, Subtractor, High or Low; then the SP High Limit and
SP Low Limit values must be between then configured CALC High and CALC Low
values. CALC High and CALC Low can be set anywhere between -999 and 9999.
l
Math A(Mult Div + Sqrt), Math B(Multiplier + Sqrt), Math C(Multiplier Divider) or
Math D(Multiplier); then the SP High Limit and SP Low Limit values can be set
anywhere between -999 and 9999 and are not limited to the CALC High and
CALC Low values.
NOTE 2: If controller is in Manual mode when a failure occurs, then the output will
maintain its value.
NOTE 3: These selections appear when:
A. Control Algorithm is selected for Three Position Step.
or,
B. Control Algorithm is selected for PD+Manual Reset, and Output Algorithm is
selected for Position Proportional.
NOTE 4: Does not apply to Three Position Step Control.
NOTE 5: Reset limits and Dropoff are not displayed when Three Position Step Control
is configured.
137
Chapter 4 - Configuration
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