100
Function Prompt
Selections or Range of
Setting
Parameter Definition
Alarm 1 timer with the keyboard (Run/Hold
key) or Alarm 1.
Increment Minutes
Seconds
Increment allows you to increment
the timer in either minutes or
seconds.
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.
Input Algorithm 1 Input Algorithm 1 has the following
selections from which to choose:
None No algorithm configured
Weighted Average
(See Note 2)
(Standard feature on
controllers with two
analog inputs)
When you configure for Weighted
Average, the controller will compute
a PV or SP for the control algorithm
from the following equation:
Alg1 = [(Input A x Ratio A + Bias A) +
(K x Input B x Ratio B + Bias B)] / (1
+ K)] + Alg1Bias
Feedforward
Summer
(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
Chapter 4 - Configuration
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