7.3 Checking the operating
range of the positioner
To check the mechanical attachment, the
valve should be moved through the operat
-
ing range of the positioner in the manual
mode using the manual reference variable
w.
Select manual operating mode (MAN) :
Mode
Default: MAN
Turn
→
Code 0
Press , Code
0 blinks.
Turn
→
MAN
Press to change the positioner to manual
mode.
Checking the operating range:
Manual reference variable
(the current opening angle
appears)
Turn
→
Code 1
Press , Code
1 and icon blink.
Turn until the pressure builds up in the
positioner, and the control valve moves to its
end positions to check the travel range/an
-
gle of rotation.
The angle of the lever on the back of the
positioner is indicated on the display.
A horizontal lever (mid-position) is equal to
0°.
To ensure the positioner is working prop
-
erly, the outer bar elements may not blink
while the valve is moving through the oper
-
ating range.
The manual mode can be exited by pressing
the rotary pushbutton ( ).
The permissible range has been exceeded
when the displayed angle is greater than
30°, and the outer right or left bar element
blinks.
The positioner changes to the fail-safe posi
-
tion (SAFE).
After canceling the fail-safe position (SAFE)
(see section 8.2.2) it is absolutely necessary
to check the lever and pin position as de-
scribed in section 4.
WARNING!
To avoid personal injury or property dam-
age caused by the supply air or electrical
auxiliary power, disconnect the supply air
and electrical auxiliary power before ex
-
changing the lever or changing the pin posi
-
tion.
48 EB 8387-3 EN
Start-up – Settings
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