Electro-Pneumatic Positioner
YT-1000R
11. ADJUSTMENT
Check the following prior to starting the adjustment.
c
Check that the pipeline is correctly connected with the pressure supply port and
OUT1 and OUT2 port.
d
Check that the wires are correctly connected with the (+), (-) and grounding
terminals.
e
Check that the actuator and positioner are sturdily connected.
f
Check for locking of the auto/manual changeover screw of pilot valve (fully
tightened in the clockwise direction).
g
Check that the span adjusting lever of internal feedback lever is attached to the
correct (Direct or Reverse) position.
h
Check for correct use of the cam face (Direct or Reverse) and that flange nut
is firmly locked.
11-1. Zero Adjustment
c
Set an signal to the Stroke starting signal(4mA)
then turn the Zero Adjuster clockwise or
counterclockwise.
d
In case of Spring Actuator, check if it is set to
standard pressure in Zero Point. If not, repeat
Zero adjustment.
c
Adjust Range Adjustment so that an Actuator
stops at 0% position of the Stroke by the 0%
applied input signal and 100% position for
100% input signal respectively.
d
Check Zero Point and repeat Zero Span
Adjustment.
1/2 Split Range can be used by Zero and
Span Adjustment.
f
After Setting, tighten up Lock Screw of
Span adjustment.
11-3. Auto / Manual Switch
11-2. Span Adjustment
c
This is a Switch for changing Auto and Manual.
d
Shipped products is set for Auto. To use Manual operation, turns A/M Switch
counterclockwise.
e
In manual operation, the pressure of YT-200 regulator connects to Actuator.
After using, return switch to "A".
f
Not available for Single Acting-OUT2 and Double Acting.
ЧП
Мельникова
http://kran.net.ua E-mail: [email protected]
