user manual

04/08 UDC3200 Universal Digital Controller Operator Manual 35
Function
Prompt
Lower Display
Selections or
Range of Setting
Upper Display
Parameter Definition
PERIOD
0:00 to 99:59
PERIOD allows you to configure the length of timeout period (from
0 to 99 hours: 59 minutes).
START
KEY
ALARM 2
START allows you to select whether the timer starts with the
keyboard (Run/Hold key) or Alarm 2.
LOW DISP
TI REM
E TIME
LOW DISP allows you to select whether time remaining (TI REM)
or elapsed time (E TIME) is displayed for the timer option.
The time is shown on the lower display in HH:MM format along with
a rotating “clock” character.
• If the “clock” rotation is clockwise, elapsed time is indicated.
• If the “clock” rotation is counterclockwise, time remaining is
indicated.
INPUT MATH ALGORITHMS—Controllers with two inputs are provided with one input algorithm. Unless
otherwise noted, these selections are provided only as part of the Math Options package. Each algorithm
can be configured to provide a derived (calculated) PV or a derived Remote Setpoint. Up to three inputs
may be applied to the calculation. See Inputs A, B, and C for definitions per equation.
All algorithms operate in engineering units except Feedforward (F FWRD) which operates in percent of
output units.
ATTENTION When the Input C configuration is set to NONE, the value of Input C used in the functions
is automatically set to 1.0, except for the Summer algorithm, where it is set to 0.0.
INP ALG1 INPUT ALGORITHM 1 has the following selections from which to
choose:
NONE
NONE—No algorithm configured
W AVG
(See Note 2)
(Standard feature
on controllers with
two analog inputs)
WEIGHTED AVERAGE—When you configure for Weighted
Average, the controller will compute a PV or SP for the control
algorithm from the following equation:
Alg1 = [(InpA x Ratio A + Bias A) + (K x InpB x Ratio B + Bias B)] / (1 + K)] + Alg1Bias
F FWRD
(Standard feature
on controllers with
two analog inputs)
FEEDFORWARD SUMMER—Feedforward uses Input A, following
a Ratio and Bias calculation as a value summed directly with the
PID computed output value and sent, as an output value, to the
final control element.
This algorithm will only function in automatic mode and is not used
for Three Position Step Control applications.
The following formula applies:
Controller Output = PID Output + (Input A x Ratio A + Bias A ) x (100 / Input A Range)
FFWDMu
(Standard feature
on controllers with
two analog inputs)
FEEDFORWARD MULTIPLIER—Feedforward uses Input A,
following a Ratio and Bias calculation as a value multiplied directly
with the PID computed output value and sent, as an output value,
to the final control element.
This algorithm will only function in automatic mode and cannot be
used for Three Position Step Control applications.
The following formula applies:
Controller Output = PID Output x (Input A x Ratio A + Bias A ) / Input A Range