5.3.3
Continuous controller (inverse)
ConF
/
Cntr
:
SP.Fn
=
0
set-point controller
C.Fnc
=
1
continuous controller (PID)
C.Act
=
0
inverse action
(e.g. heating applications)
ConF
/
Out.3
:
O.tYP
=
1
/
2
Out.3
type ( 0/4 … 20mA )
Out.0
= -1999...9999 scaling analog output 0/4mA
Out.1
= -1999...9999 scaling analog output 20mA
PArA
/
Cntr
:
Pb1
= 0,1...9999
proportional band 1 (heating)
in units of phys. quantity (e.g. °C)
ti1
= 1...9999
integral time 1 (heating) in sec.
td1
= 1...9999
derivative time 1 (heating) in sec.
t1
= 0,4...9999
min. cycle time 1 (heating)
PArA
/
SEtP
:
SP.LO
= -1999...9999 set-point limit low for Weff
SP.Hi
= -1999...9999 set-point limit high for Weff
g
For direct action of the continuous controller, the controller action must be
changed (
ConF
/
Cntr
/
C.Act
=
1
).
g
To prevent control outputs
Out.1
and
Out.2
of the continuous controller from
switching simultaneously, the control function of outputs
Out.1
and
Out.2
must
be switched off (
ConF
/
Out.1
and
Out.2
/
Y.1
and
Y.2
=
0
).
Configuration level
32
Configuration examples
Digital 280-1
Set-point
Output
process-value
SH
InH.1
InL.1
SP.LO
SP
SP.Hi
Out.3
Â
InP.1
Ê
20 mA
0/4 mA
PB1
Summary of Contents for Digital 280-1
Page 48: ...12 Notes Notes Digital 280 1 48...
Page 49: ...Notes 49 Digital 280 1...
Page 50: ...Digital 280 1 50...
