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Configuratron
5-37
5.8.4
Feedfotward
Control
(AOI)
Function
FCODE
Option
No Default
Selected
VakZ
W?.lUG!
Forced
112
Disabled
0
0
Output
Dll, applies in Auto/Manual
1
Control
Dl2, applies in Auto/Manual
2
Dll, applies in Auto only
3
DIZ, applies in Auto only
4
Use FCODE
19 to set the
required output signal
A01 for forced
control
in the range O-100 percent.
Function
Parameters
FCODE
Range
Unit
Increment Default Selected
Value
Value
Forced
Output
Signal
19
o-1 00
%.
1%
0
Control
(A01 )
If a three-state
pulse output is used, actuator
position
feedback
is required.
The analog
input signal at Al3 or Al4 can be amplified
and added to
the output signal at A01
This function
can be used to eliminate
a
measurable
incoming
disturbance
before it has time to influence
the
process
value.
The feedforward
function
sums the PID output signal with either Al3
or A14. To apply the feedforward
function,
select the optional
amplification
of the analog
signal at Al3 or Al4, and sum the amplified
signal with A01 , using FCODE
115.
May 1997
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