User guide

33
IM 04L31A01-02E
Tuning Operation
For details on the procedure of switching the operation mode, see chapter 6, “Operations
during Control Operation” in the
CX2000 User’s Manual (IM 04L31A01-01E) .
Displaying the Tuning Display
Press the TUNING soft key on the control group display.
→
Auto Tuning
To execute auto tuning, Basic setting mode > #10 Control > #1 Control action, Input
setting > Auto tuning must be turned On before carrying out the following procedure.
1. Press the AUTO TUN soft key on the tuning display.
As shown in the following figure, the auto tuning setup pop-up window appears along
with a warning message.
Auto tuning setup window
2. Select the control loop using the up and down arrow keys.
3. Press the DISP/ENTER key to execute auto tuning.
CAUTION
• You cannot execute auto tuning during ON/OFF control.
• Do not execute auto tuning when controlling the following types of processes. If
you do, malfunction may occur in the control process.
• Control process with fast response such as flow control and pressure control.
• Processes that result in adverse consequences when the output is turned on/off
even if temporarily.
• Processes that result in adverse consequences if a large output change is
applied to the control element.
• Processes that may cause adverse effects on the quality of a product when the
process value exceeds the allowed fluctuation width.