Filter
Top Products
Chapter 6. OPERATION
6-11
6-5 Manual Operation and Auto-tuning
■ Manual operation
In the MANUAL mode, controller outputs can be manipulated by or on the con-
sole.
● Controller functions
When outputs are displayed in the basic display state, only one digit in the output value
blinks. If the output value is incremented or decremented by or , actual output
also increments or decrements. Output values differ from values being entered to setting
items in that
ENT
need not be pressed.
The blinking digit can be moved by pressing or .
On 2G output models, when only estimated position-proportional control is selected by
variable parameter M .-C setting 2, “——” not the value is displayed as the output dis-
play in the MANUAL mode.
Pressing displays “O p e n” , and the open-side relay turns ON.
Pressing displays “C l O S” , and the closed-side relay turns ON.
Bump-less and preset output changes when shifting from the AUTO to the MANUAL
mode can be selected by setup parameter C 15 setting. When shifting from the MANUAL
to the AUTO mode, output is bumpless.
(However, when the total time for the PID parameter of the PID set in use is set to “0”, a
sudden change in output occurs.)
● Programmer functions
On 5G output models, when programmer functions are in operation with setup data C 18
setting 1, SP can be manually manipulated. When SP is displayed in the basic display
state, only one digit in the SP value being entered blinks. When the SP value is incremented
or decremented by or , the actual SP output also increments or decrements. SP
values differ from values being entered to setting items in that
ENT
need not be pressed.
The blinking digit can be moved by pressing or .
Output changes when shifting from the AUTO to the MANUAL mode are bumpless
regardless of setup data C 15 setting. When shifting from the MANUAL to the AUTO
mode, the SP becomes the program pattern SP, which results in a sudden change in out-
put.
■ Auto-tuning (AT)
When operating in the AUTO mode in either of the RUN, HOLD, FAST or END modes,
setting values can be automatically written to the PID set in use by auto-tuning (AT). The
following can be selected by variable parameter A t setting.
0:AT is disabled.
1:General AT is executed.
2:Overshoot-inhibited AT is executed.
3:AT by neural net is executed.
• Auto-tuning does not function when programmer functions are selected on 3D or 5K
heat/cool output models and 5G output models.
• During execution of auto-tuning, progress of program operation time stops. Accord-
ingly, the controller is in a similar state to the HOLD mode even in the RUN or FAST
modes.