Table of Contents
Advertisement
Inputs
I1: Assign the unfiltered input value to function block input I1.
TG: TG is used to define the recovery time.
KP: The proportional gain at input KP is used to adjust the input value.
You can assign the following operands to function block inputs I1, TG and KP:
•
Constant.
•
Markers MD, MW, MB.
•
Analog inputs IA01 to IA04:
•
IA01: Terminal I7.
•
IA02: Terminal I8.
•
IA03: Terminal I11.
•
IA04: Terminal I12.
•
Analog output QA01.
•
Output
QV of a different function block.
...
Output
Output FT..QV: Outputs the filtered value as an integer. You can assign the
following operands to output
•
Analog output QA01.
•
Markers MD, MW, MB.
Function of the function block
The signal to be smoothed is added via input I1. The delayed and smoothed
output value is transferred to QV.
The "recovery time" T
is to take place. The recovery time should not be greater than necessary
otherwise the signals will be delayed more than is required by the smoothing
(unavoidable side effect of signal smoothing).
The (proportional gain) input K
The input signal is multiplied with this factor. The value 100 corresponds to a
K
(factor) of 1.
P
￫
The signal filter must be enabled so that it can work, i.e. the coil
FT..EN must be active. If coil FT...EN is not active, the entire
function block is deactivated and reset. The output value is set
to zero.
If the function block is called for the first time, the output value is initialized
with the input value when the device is started or after a reset. This speeds
up the startup behavior of the function block.
Control Relay easy800 11/11 MN04902001Z-EN www.eaton.com
QV>:
...
is used for setting the time in which the smoothing
g
is used to define a proportional gain factor.
P
5 Function blocks
5.14 FT, signal smoothing filter
193
Advertisement
Table of Contents
