ABB COMMANDER 351 - Single Loop Controller

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…2 OPERATOR LEVEL
Fig. 2.2 Single Loop Controller
2.2 Single Loop Controller (Templates 1 and 2)
The single loop controller is a basic feedback control system using three-term PID or on/off control
with either a local set point (template 1) or remote set point (template 2).
PID
Control Loop
PID O/P
CSPt
I/P2
PV
I/P1
Manual Output
OP1
Remote Set Point Input
Process Variable Input
•1 Template 2 Only
•1
LSPt
I/P2 x rAtO + bIAS
RSPt
L
LR
Local Set Point
Control
Output