Sonic Alert DCP301 user manual Manual Operation and Auto-tuning, Manual operation, Auto-tuning AT

Chapter 6. OPERATION

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 .-Csetting 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.

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