Checking The Operating Range Of The Positioner - Samson 3731-5 Mounting And Operating Instructions

Operating the positioner

7.3 Checking the operating range of the positioner

To check the mechanical attachment, the valve should be moved through the operating range
of the positioner in the
Select manual mode (MAN):
1. Turn until Code 0 appears.
2. Press , the code number 0 blinks.
3. Turn until MAN appears.
4. Press . The positioner changes to the
manual mode.
Check the operating range:
1. Turn until Code 1 appears.
, the code number 1 and
2. Press
3. Turn until the pressure in the positioner
builds up and the control valve moves to its
final positions so that the travel/angle can
be checked.
The angle of rotation of the lever on the
back of the positioner is indicated.
A horizontal lever (mid position) is equal to 0°.
To ensure the positioner is working properly, the outer bar elements must not blink while the
valve is moving through the operating range. Exit the manual mode by pressing the rotary
pushbutton.
The permissible range has been exceeded when the displayed angle is more than 30° and
the outer right or left bar element blinks. The positioner goes to the fail-safe position (SAFE).
Î After canceling the fail-safe position (SAFE) (see section 8.2.2), check that the lever and
pin position are correct (see section 5).
54
manual mode (MAN) with the manual set point w.
blink.
Operating mode
Default: MAN
Manual set point w
(current angle of
rotation is indicated)
EB 8387-5 EN