9. Valve System
Sets the actuator action, positioner
action, and valve action. Select a
menu option from the appropriate
combo box.
Tap [Send] to transmit the changes to
the valve positioner. If you have not
yet tapped [Send], and want to recall
the previous data, tap [Read].
The actuator action is set
automatically by Auto Setup. The
positioner action is determined by the
hardware specification, and cannot be
changed in this setting. Please set it
according to the hardware specification.
For linear valves, the direction of valve
action is determined by the closing
direction.
-- Direct action: push-down-to-close
(extending the actuator stem closes
the valve)
-- Reverse action: push-down-to-open
(extending the actuator stem opens the valve)
For a rotary valve, or when the
attached direction of the valve
positioner is different, make sure that
at the valve's fully closed position the
positioner's travel is confirmed to be
0%, and at the valve's 100% open
position the positioner's travel is
confirmed to be 100%.