13
Model EA91A＆EA90A
Characteristics
Action
Rotating Angle
60°
, 90°
60°
70°
DA, RA
DA, RA
DA, RA
① Linear
② Eq％
③ Eq％
Cam
Flange Nut
Linear Cam
Starting Point
of Cam
Starting Point
of Cam
Starting Point
of Cam
Exhaust Hole
Exhaust Hole
7ER
7ED
ER
A
RA
EDA
Eq％ Cam
70° Eq％ Cam
⑴ The cam for linear motion has three types. The three types
of cam are described in the table below.
⑵ The starting point for characteristics and identification of
DA (start air supply) and RA (stop air supply) are stamped on
the cam.
⑶ Loosen flange nut to select cam or to adjust position of
cam.
4.6.2 Selection of Buit-in Cam
The exhaust hole of pilot cover changes due to installation position of the positioner. Refer to the figure
below, and check the top and bottom of pilot cover.
※The pilot cover is machined to meet designated position if the installation position is specified. However, if changing
the installation position in field, handle with extra attention.
4.6.3 Selection of Pilot Cover
(Available only for
Model No. 3993)
Back Side of DA
Install pilot cover after preparing
the through hole.
(The hole can be opened by lightly
pushing from the inside with driver.)
Top
Top
Bottom
Bottom
