Watlow F4T

Watlow F4T • 177 • Chapter 5 Function Reference
Filter
Set the amount of filtering to apply. Filtering smooths signal fluctuations. Increase the time to
increase filtering. Excessive filtering slows the function’s response.
Range: 0.0 to 60.0 seconds
Average
This function calculates the mean average of up to four inputs. Only inputs connected to a
source are used in the calculation. A filter and offset may be applied to the calculated value.
The output has the units of the signal connected to the top input link.
Signals
Direction
Label Type Function
Receivers
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
- - - - Analog Value to include in the average
Transmitter - - - - Analog The filtered average of the inputs plus the offset
Function
To average the inputs, set Function to Average.
Offset
Adjustment added to the result of the calculation.
Range: -99,999.000 to 99,999.000
Filter
Set the amount of filtering to apply. Filtering smooths signal fluctuations. Increase the time to
increase filtering. Excessive filtering slows the function’s response.
Range: 0.0 to 60.0 seconds
Crossover
The output of this function follows input A at the low end of the range, and, over a user-de-
fined band as the input increases, the output gradually transitions to follow input B. A filter
and offset may be applied to the calculated value. The output has the same units as input A.
The diagram below illustrates how the weighting of inputs A and B in determining the output
changes over the input range. At the low end of the range only A is considered. As the value
of A increases into the crossover band, A becomes less significant and B becomes more signifi-
cant to the output until at the crossover point, the inputs are weighted equally, and the out-
put is the average of A and B. At the high end of the range only B is considered.