Connecting The Control Line; Feedback Signal; Corrections With Potentiometer "A" And "B - Samson SAM -01 Mounting And Operating Instructions

   

9.1.1 Connecting the control line

For the connection of the lines, refer to section
"5.2 Establishing the connection ".
NOTE!
To keep the influence of the disturbing pulse
as small as possible, the control signal (set
point) must be routed to the actuator via sep-
arate line with tin-plated copper braiding as
screening!
Control voltage 0 (2) to 10 V:
(−) Clamp 57
Control current 0 (4) to 20 mA:
(−) Clamp 57
10 V (20 mA) = ^ Actuator stem up ("OPEN")
= ^
2 V (4 mA) Actuator stem down ("CLOSED")

9.1.2 Feedback signal

You can measure the actual value either as:
– Voltage 0 (2) to 10 V
(−) Clamp 58
– Current 0 (4) to 20 mA:
(−) Clamp 58
The output signal always corresponds to the
input signal at a tolerance of approx. 200 mV
or 0.2 mA compared to the input.
The feedback signal is in the same direction,
i.e. an increasing input signal (set point) also
causes an increasing feedback signal.
The feedback signal must not be adjusted and
is not electrically isolated from the input.



(+) Clamp 56
(+) Clamp 59
(+) Clamp 61 or
(+) Clamp 60
        

Fig. 24 ⋅ Potentiometer "A" and "B",
Poti "B" on left, Poti "A" on right;
reversing plug in background
9.2 Corrections with potentiome-
ters "A" and "B"
An LED simplifies the adjustment of the final
points.
– Potentiometer "A" for upper set point mark:
Turn clockwise, travel becomes shorter.
– Potentiometer "B" for lower set point mark:
Turn clockwise, travel becomes longer.
The red LED signalizes: actuator in final posi-
tion, no manipulated variable is generated,
the set point has been reached.