
- POT R1, POT R2, ESR
The actuators can be equipped with two
potentiometers
POT R1
and
POT R2
or
- with the Types SAM -20 to SAM -52 - with a
position transmitter ESR
that has an output
signal of 4 (0) to 20 mA.
Both versions enable the analog remote trans-
mission of the valve travel.
The potentiometers and the electronic position
transmitter are adjusted to the required travel.
They can be readjusted (see section "7 Adjust-
ment and calibration").
- Positioner
In combination with three-phase synchronous
a.c. or brake motors for 230 V, 50 Hz, a
po-
sitioner
may already be installed as factory
default (see section "9 Positioner").
Input signals:
−
4 (0) to 20 mA
or
−
0 to 10 V
When the actual value deviates from the set
point, a manipulated variable is generated to
control the actuator.
Fig. 3
⋅
Switches and potentiometers
Fig. 4
⋅
Positioner
$
"#