Toho-electronics TTM200 Manuel d'utilisateur télécharger pdf (Page 79)

48-7009-E 5-9

5.3.3 PID control setting

★ Setting the PID control

The “PID Control” is set as factory default, and the values for P = proportional band, I = integration, D

= derivation and proportional cycle are provisional values.

Those values are as follows: P1 = 3.0, I = 0, D = 0, proportional cycle = 1 second (SSR type) or 20

seconds (relay type).

1) How to start auto-tuning (AT)

* Execution of auto-tuning results in automatic setting of the most appropriate PID constant to the

target value.

* Auto-tuning cannot be executed in the RDY state or ON/OFF control.

* Results of the auto-tuning are reflected to values of P, I and D.

* For details of auto-tuning, see pages 5-22 to 24.

① In the auto-tuning start screen

For constant value run mode screen:

PV value (present value)

SV value (target value)

Hold MODE key pressed for 2 seconds.

Input 1 setting screen

Each set screen

Each setting mode

Press the ▲ key three times. Press it, however, twice for TTM-204.

Control setting mode

Press MODE key 15 times.

S04-15 AT start screen

* Auto-tuning is started in this screen.

Use the ▲/▼ key for start and stop settings.

* During auto-tuning, the target value and “At” is alternately displayed for SV (red).

Upon completion of auto-tuning, the target value is displayed.

(The screen returns to the operating mode screen.)

* No operation is possible during auto-tuning, except operation of the ▲/▼ key.

* “OFF” is set at factory shipment.

For program run mode screen:

PV value (present value)

SV value (PRoG)

Hold MODE key pressed for 2 seconds.

Setting mode is the same as that for Hereinafter,

to the input 1 setting screen similarly to that for

the constant value run mode

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Toho-electronics TTM200 Manuel d'utilisateur Page 79