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Manual Operation and Auto-tuning
Chapter 6. OPERATION
■
Manual operation
In the MANUAL mode, controller outputs can be manipulated by
↑
or
↓
on the
console.
●
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 the
ENT
key 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 display in the MANUAL mode.
Pressing
↑
displays “
oPEn
” , and the open-side relay turns ON.
Pressing
↓
displays “
CLoS
”, and the closed-side relay turns ON.
Bump-less and preset output changes when moving from the AUTO to the
MANUAL mode can be selected by setup data
C14
(for MV1) or
C37
(for MV2)
setting. When moving from the MANUAL to the AUTO mode, the change in
output is bumpless.
(However, note that a sudden change in output occurs when the total time for the
PID parameter of the PID set in use is set to “0”.)
●
Programmer functions
On the current output channel, when programmer functions are in operation with
setup data
C18
(for CH1) or
C41
(for CH2) set to 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 the
ENT
key need not be
pressed.
The blinking digit can be moved by pressing
←
or
→
.
Output changes when moving from the AUTO to the MANUAL mode are
bumpless regardless of setup data
C14
(for CH1) or
C37
(for CH2) setting. When
moving from the MANUAL to the AUTO mode, the SP becomes the program
pattern SP, which results in a sudden change in output.
■
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
At
(for CH1) or
At.2
(for CH2) setting.
0:AT is disabled.
1: General AT is executed.
2: Overshoot-inhibited AT is executed.
3: AT by neutral net is executed.
• Auto-tuning does not function when programmer functions are selected on
heat/cool output channel models and current output channel models.
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