Manual Operation And Auto-Tuning; Manual Operation; Auto-Tuning (At) - Honeywell DCP301 User Manual

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Manual Operation and Auto-tuning

Manual operation

Controller functions
Programmer functions

Auto-tuning (AT)

In the MANUAL mode, controller outputs can be manipulated by
sole.
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
also increments or decrements. Output values differ from values being entered to setting
ENT
items in that need not be pressed.
The blinking digit can be moved by pressing
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.
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.
Pressing
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.)
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
values differ from values being entered to setting items in that
The blinking digit can be moved by pressing
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.
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.
or
, the actual SP output also increments or decrements. SP
or
Chapter 6. OPERATION
or on the con-
or , actual output
.
ENT
need not be pressed.
.
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