SMC Networks IP8101 Series, Operation Manual

Page: 39 / 85

No.DIG-31900-OM002
38
(C00) Calibration The following can be performed: angle adjustment for a fork lever
(AnGL), balance current adjustment (0AdJ), automatic calibration
(CAL), input current adjustment (S-0) & (S-F), confirmation of
balance current (bAL), and span adjustment (SPn).
(C10) Angle adjustment
A mounting angle of a fork lever-type fitting can be adjusted.
Referring to the LCD indication, the fully-closed position /
fully-open position of an actuator should be adjusted to be
between -60 to 60.
(C20) Simple adjustment for balance current
Balance current for a torque motor can be adjusted. After rotating
a balance adjustment screw until a pressure gauge for OUT 1
indicates 0MPa, rotate the adjustment screw until pressure starts
increasing again.
(C30) Calibration
A fully-closed position and a fully-open position of a mechanical
valve can be automatically adjusted
＊
16
. Also, PID constant can be
automatically set
＊
17
.
Fig. 32
4mA 20mA
0%
100%
Input current
S
tr
ok
e
200=dir
Auto.
setting
Auto.
setting
(C40) & (C50) Input current adjustment
Input current of 4mADC and 20mADC can be calibrated. Confirm
the input value (S value) in the auto mode, and adjust it if
4mADC=0 and 20mADC=100 cannot be achieved. This
adjustment is not necessary in general.
(C60) Confirmation of balance current
Adjustment of balance current can be confirmed. If adjustment is
good (Good), the balance current is adjusted correctly. If
adjustment is high (HI) or low (Lo), the balance current needs to
be adjusted again.
(C70) Span adjustment
Zero point / span for a positioner can be adjusted. PID constant
will not be set unlike automatic calibration (C30). This adjustment
is useful when zero point / span needs to be adjusted again with
the PID constant set before.

16: If operation direction is changed by exchanging piping of OUT1 and
2 with each other after calibration, calibrate a positioner again.

17: See “ ■ Improved Controllability” if hunting with a PID constant set
by calibration needs to be performed.