ABB COMMANDER 360 User Manual page 15

2.2 Single Loop Controller (Template 1)
The single loop controller is a basic feedback control system using three-term PID or on/off control.
Profile Set Point
Local Set Point
Process Variable Input
I/P1
361 . 5
360 . 0
PV – CSPt
Deviation
888
PRG SEG
•1 With the Ramping Set Point function enabled (see Section 4.3, Set Points/ Ramp Rate), the
deviation bargraph shows the difference between the process variable and the actual (ramping)
set point value. The digital display shows the target set point value.
•2 Program selection can only be adjusted when the current program is stopped and program
selection is enabled – see Section 3.4/Profile Control/ Front Panel Program Select.
•3 Segments can only be skipped if a program is in Run or Hold mode and Segment Skip is enabled
– see Section 3.4/Profile Control/ Front Panel Skip Enable.
LSPt 1
Fig. 2.2 Single Loop Controller
•1
•2 •3
Manual Output
CSPt
PID
PV
Control Loop
Process Variable
Control Set Point
['SPt.L' to 'SPt.H' – see Section 5.5]
Adjustable only when profile is not running.
Local Set Point 1 is used for the profile set point and
is selected automatically when a profile is run.
Current Program/Segment
[1.01 to L.99 ]
X.NN
When the profile is in Run or Hold mode:
Press to skip forward to the start of the next
segment.
Press to skip back to the start of the current
segment.
When the profile is Stopped:
Press or
be run.
Note. Only valid programs (i.e. those not
switched off) can be selected.
Continued on next page
2 OPERATOR LEVEL...
PID O/P
Current Segment Number
Current Program Number
to select the profile program to
Control
Output
OP1
11