IM-P323-25 CH Issue 3
33
Error Dead Band
The Soft-start function is a warm up
phase after the controller is first
powered up.
The Soft-start will set the control
value to a desired position (
ST.OP
).
for the set duration (
St.tn
).
Second group
This input filter provides a time
constant (in seconds) to the PV input.
Input filter
time constant
Input shift
The value entered into this
parameter will offset the PV input
value. Its effect is to shift the whole
PV scale by ± 60 digits.
When the PV is within the error
band, the control output will not
change. This will help the life of the
actuator by reducing the number of
actuator starts.
Set the value of the control ouput
during the Soft-start activation time
(in %). To de-activate the Soft-start,
set to 'OFF'.
Soft-start control
output value
Soft-start
activation time
Set the time duration (starting at
power on) for the Soft-start function
(in seconds).
If the input signal fails, the control
value can be set to a safe position
(in %).
Output
Safety value
t.f
¡
l
St.op
st.t
N
in.sh
d.err
sa0p
