Specifications

10/31/02 Tech-304/DWO 14195 Page 23 of 39
Menu 3: Cofg (Configuration)
Entering this menu allows you access to the following five configuration functions via the keypad:
1. -Flow- Positioner Output Flow Characteristics
2. -Type- Positioner Recognition of Magnetic Feedback, Rotary or Linear
3. -Flop- Positioner Fail Position, Open or Closed
4. -OPSP- Positioner Opening Speed Adjustment
5. -CLSP- Positioner Opening Speed Adjustment
These functions allow display, speed and valve characteristic changes from standard factory set-
tings.
Menu 4: Stro (Manual Override of Input Signal)
Entering this menu allows you access to the following three stroking functions via the keypad:
1. -Adjs- Adjustment of Positioner to Any Position Using Keypad Arrows
2. -OP- Open, Sets the Valve to the Full Open Position
3. -CLs- Close, Sets the Valve to the Full Closed Position
These functions set the positioner to digital control mode (input current independent) and
therefore allow override of the control signal.
4.8 Description of Functions
LO This function serves to set the fail position of the actuator/valve. Initially during this calibra-
tion the valve is driven to the fail position (hard stop). The user will notice full pressure to
Outlet Port 2 and zero pressure to Outlet Port 1. After a short period of time pressure will
increase in Outlet Port 1 and the valve will be driven to the fully energized position and then
back to the fail position. After approximately 30 seconds pressure will again increase in Out-
let Port 1 and the valve will be driven off of the hard stop (approx. 10% of full travel), and
then driven back to the hard stop. The calibration is making note of the torques required to
fully seat and un-seat the valve from the hard stop. At this point the user has the option to
select the hard stop as low (zero) position or to select an arbitrary position as low (zero)
position.
HI This function serves to set the fully energized (full travel) position of the actuator/valve. ini-
tially during this calibration the valve is driven to the fully energized (full travel) position
(hard stop). The user will notice full pressure to Outlet Port 1 and zero pressure to Outlet
Port 2. After a short period of time pressure will increase in Outlet Port 2 and will be driven
off of the hard stop (approx. 10% of full travel), and then driven back to the hard stop. The
calibration is making note of the torques required to fully seat and un-seat the valve from a
hard stop. At this point the user has the option to select the hard stop as the high (span)
position. or to select an arbitrary position as the high (span) position.