Appendix A
A.2 Initialization Procedure
PS2 Troubleshooting Guide
Service Manual, 03/2017, A5E36661550-AA
51
Remove the cover,
The PS2 has an LCD display and three (3) input buttons;
1. When the positioner is powered up for the first time, the display will flash
(no
initialization) on the bottom right of the screen.
2. Verify the valve/actuator moves freely from full closed to full open. Push and hold the
button, then push and hold the
button. With both buttons pushed in this sequence, the
actuator will
move to one end position.
(If no movement occurs, reverse the button
sequence. Push and hold the
button, then push and hold the
button.)
Once the
actuator has reached the end position, reverse the push button sequence to
move
the actuator to its opposite position. To move the actuator
, push the or only.
Place the actuator anywhere around mid-stroke by using one of the methods described
above.
There are two mechanical adjustments for 33° and 90° degrees. One is the locking
mechanism called the "Gear latch", see
①. The other is the transmission ratio selector,
⑤.
Note
Important
The gear latch must be set to the neutral position BEFORE
changing the transmission
ratio selector. Otherwise the actual gear will not engage.
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