Azbil KFDB, Руководство пользователя

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(6) In the AUTO mode of operation, select appropriate PID values to suit the process.
(7) To transfer from the AUTO mode to the MAN mode, press the check button with the
switch set in the A position in order to read the manual output. Adjust the MAN output
to the AUTO output by means of the pressure regulator and confirm that the output
pressure gauge does not change even when the check button is pressed, and then change
the lever from the A position to the M position. Refer to Item 4 of Section 1-5. (When
changing the transfer lever, be sure to move it quickly and fully to the position where it
stops.)
3-4. Setting of Batch Switch
(1) Connect a precision pressure gauge to measure the pneumatic controller output signal.
(2) Set the controller units as mentioned below. Apply a slight deviation input (in the
direction that the output increases) so that the pneumatic controller output signal
increases and saturates.
Proportional band (P): PROP BAND dial at 50 %
Integral time (I): RESET dial at 0.05 minutes
(3) Set the output pressure at the desired batch setpoint by turning the setting screw of the
batch switch. The output decreases as you turn the setting screw clockwise.
(4) When no batch control function is necessary, set the setting screw at the counterclockwise
extreme position.
Note 1: When operating the batch switch, keep open the RES port at the bottom of the
instrument. For preleading, apply a preload pressure to the RES port.
Note 2: Refer to Item (3) of Section 5-1-3.
3-5. To Make Derivative Action Ineffective
The derivative action can be made ineffective without removing the derivative unit.
To accomplish this, turn the derivative action off switch (RATE OFF switch) to the
counterclockwise extreme position. When the derivative action is needed to be brought into
effect, turn the switch to the clockwise extreme position. This provision is convenient when
adjusting the controller mechanism.