90
Phone:(910) 392
‐
2490
Fax: (910) 392
‐
2123
416 Landmark Drive
Wilmington, NC 28412
www.easterninstruments.com
Manual Control:
Manual se ng of the Integrated Control Valve to a speci
fi
ed value with an
acceptance of the resul ng Process value. Output of this opera on is referred to as
"Manual Out".
Minimum Sta c Calibra on:
This is a non
‐
standard se ng of the Sta c Calibra on that will
electronically range the Transducer down to ¼ mes the standard Transducer Value.
The Voltage se ng for this is 6.0 Volts. (This is used only under special circumstances).
Manual Value:
The set value of the Manual Output, usually in percent.
NC:
Normally Closed. This term refers to electronic signal outputs and means that the output
is normally closed un l a signal is received at which point the output will open.
NO:
Normally Open. This term refers to electronic signal outputs and means that the output
is normally open un l a signal is received at which point the output will close.
PID
Control:
The independent sum of the propor onal (Kp * E), integral (Ki * E
sum
), and
deriva ve (Kd * E
delta
) terms to produce an auto out. The Error (E) is the di
ff
erence
between the Set point and the Process Variable. The values of the propor on gain (Kp),
integral gain (Ki), and deriva ve gain (Kd) are dimensionless and can be entered as a
number from 0.001 to 999.999. Entering a zero value disables that func on.
Increasing the value decreases the control stability while increasing the responsiveness
of the system.
Process Value:
The actual value of the process in engineering units or in percent of Electronic
Full Scale
Process Value/Set Point in Engineering Units:
Representa on of the Process Value in actual
units, such as lb/min.
Reduced Sta c Calibra on:
This is a non
‐
standard se ng of the Sta c Calibra on that will
electronically range the Transducer down to ½ mes the standard Transducer Value.
The Voltage se ng for this is 3.0 Volts .
Retained Auto Output:
The saved value when Auto Control is switched to Manual Control. It
is the Control Out Value that sa s
fi
es the condi on that Process Value is equal to Set
Point Value at the moment that the switching occurs.
