model 2704 controller installation and operation handbook - Soliton

Loop Set Up
2704 Controller
9. Chapter 9 Loop Set Up
9.1. WHAT IS LOOP SET UP
The 2704 controller can have up to three control loops, and each control loop will have an
auxiliary loop if cascade, ratio and override control has been configured. The Loop Setup
pages allow you to set up the parameters associated with the operation of each of these loops.
The Loop Setup pages are divided into a number of sub-headers - briefly described below:-
LP1 Setup (SP Page)
LP1 Setup (SP(Aux)Page)
LP1 Setup (Cascade Page)
LP1 Setup (Ratio Page)
LP1 Setup (Override Page)
LP1 Setup (PID Page)
LP1 Setup (PID Aux) Page
LP1 Setup (Motor Page)
LP1 Setup (Output Page)
LP1 Setup (Diagnostic
Page)
LP1 Setup (Diag Aux) Page
These parameters are associated with the setpoint of a
particular loop
These parameters are associated with the setpoint of the
auxiliary loop.
These parameters only appear if the control loop is
configured for cascade control.
These parameters only appear if the control loop is
configured for ratio control.
These parameters only appear if the control loop is
configured for override control.
These parameters allow you to set up the three term or PID
values for the selected loop. See also Chapter 8
These parameters allow you to set up the three term or PID
values for the selected auxiliary loop. See also Chapter 8
These parameters allow you to set up the values for a valve
positioning output when the selected loop is configured for
motorised valve control. See also Chapter 8
These parameters allow you to set up the values for the
output when the selected loop is configured for analogue or
digital control outputs.
These parameters are for diagnostic purposes on the selected
loop.
These parameters are for diagnostic purposes on the selected
auxiliary loop.
Each header listed above is repeated for each control loop configured.
Notes:
1. Text shown in italics is user definable in configuration mode and may be different from
that shown
2. Since this chapter may be read in conjunction with the previous chapter - ‘Tuning’ - the
manual setting of PID parameters is described first.
9-2 Installation and Operation Handbook. Part No HA026502 Issue 1.0 Apr-00