16
EB 7500 EN
Design and principle of operation
5.2
Type 3427 Manual Control
Station
The Type 3427 Manual Control Station is
used in combination with the Type 3425
Pneumatic Controller (in a Type 3426 Con-
trol Room or Field Housing).
The three different versions (Type 3427-1,
Type 3427-2, and Type 3427-9) are adapt-
ed to control tasks and corresponds to the
circuits of Type 3422 Manual Control Sta-
tion. See
u
T 7511.
5.3
Type 3425 Pneumatic Con
-
troller (wall-mounted and
field controller)
The pneumatic controllers for control room or
field installation consist of the Type 3426
Control Room or Field Housing and a
Type 3423 Controller Module.
The controller module is connected over self-
seal push-on fittings to the housing and fas-
tened with a screw (6). See
u
T 7512.
6
P/PI
P
PI
PID
V
w
ext
w
int
y
A
y
H
y
A
y
H
y
A
y
H
y
A
y
H
y
H
w
x w
w
ext
y
w
Z
y
y
y
S
x
R
R
w
Z
y
A
y
A
S
x
w
ext
y
A
y
H
y
H
x w
y
w
Z
y
A
S
x
R
R
w
Z
y
A
S
x
w
ext
y
A
y
H
y
H
x
y
w
Z
y
A
S
*)
*)
x
R
R
w
Z
y
A
S
S
S
S
x
P/PI
P
PI
PID
V
Fig. 8:
Pneumatic manual control unit with controllers for control room and field installation
6
Type 3426-3 Field Housing with Type 3423
Controller Module
Type 3427-1 Manual Control Unit (circuit 1) connected
to Type 3425 Pneumatic Controller (for control room
and field installation)
Type 3426-2 Control Room
Housing with Type 3423
Controller Module
Type 3427 Manual Control Station
