17
Tuning Tab
The owner has a choice on what type of Control Mode or how the output is to be operated: Auto, Manual or Off.
These selections are made within the Setpoints Tab.
If “AUTO” or Automatic Control Operation is desired, then the Tuning of the Automatic Control is accomplished
via the Tuning Tab. See Figure 13.
Control Modes: ON/OFF, PID & Autotune
• Select ON/OFF if you wish the operation of the heat-
ers to be 100% ON when a demand for heat exists and
0% once that demand is removed. The output is ON
until the Process Temperature equals the upper limit of
the Deadband. The output is then turned off until the
Process Temperature falls below the lower limit of the
Deadband. At this point the cycle repeats. See Chart 1
• Select PID if you desire PID Control of the heaters. The
owner may input his/her Integral, Derivative and Propor-
tional Band parameters in the appropriate cells.
• The Autotune Feature exists only locally on the ITLS
touch screen. If Autotune is selected, then the PID pa-
rameters will be calculated and entered by the system
once the Autotune function has completed its demand
profile function.
Figure 13
Chart 1
To Next Page
Loading...
Need help?
General
