Emerson Fisher FIELDVUE DVC6000, Instruction Manual

Page: 79 / 162

Detailed Setup
September 2013 4-19
A
B
Single-Acting Direct (Relay C)
Instrument goes to zero air out-
put at port A.
Failure direction per
actuator fail mode.
Single-Acting Reverse (Relay B)
Failure direction per
actuator fail mode.
Double-Acting (Relay A)
Failure direction cannot
be determined
.
Loss of Power
Loss of
Pneumatic Supply
Instrument goes to full supply
air output at port B.
Instrument goes to full supply
air output at port B. A goes to
zero air output.
Relay Type
Figure 4-6. Zero Power Condition
Valve Style—Enter the valve style, rotary or
sliding-stem
Actuator Style—Enter the actuator style, spring
and diaphragm, piston double-acting without spring,
piston single-acting with spring, or piston double-acting
with spring.
Travel Sensor Motion—Select Clockwise, or
Counterclockwise. Travel Sensor Motion establishes
the proper travel sensor rotation. Determine the
rotation by viewing the end of the travel sensor shaft
from the perspective of the actuator.
For instruments with Relay A and C: If increasing
air pressure at output A causes the shaft to turn
clockwise, enter Clockwise. If it causes the shaft to
turn counterclockwise, enter Counterclockwise.
For instruments with Relay B: If increasing air
pressure at output B causes the shaft to turn
counterclockwise, enter Clockwise. If it causes the
shaft to turn clockwise, enter Counterclockwise.
View/Edit Feedback Connection—Select
Rotary All, SStem - Roller or SStem - Standard. For
rotary valves, enter Rotary - All, SStem - Roller. For
sliding-stem valves, if the feedback linkage consists of
a connector arm, adjustment arm, and feedback arm
(similar to figure 4-7), enter SStem - Standard. If the
feedback linkage consists of a roller that follows a cam
(similar to figure 4-8), enter Rotary All, SStem - Roller.
Assembly Specification Sheet— Allows you to
view and edit the Specification Sheet used by
ValveLink Software.
Figure 4-7. Feedback Connection for Typical Sliding-Stem
Actuator (Up to 4 inch Travel)
ACTUATOR
STEM
TRAVEL SENSOR SHAFT
FEEDBACK ARM
CONNECTOR
ARM
ADJUSTMENT
ARM
Partial Stroke (1-2-7)
Note
Partial Stroke is only available for
instrument level ODV.
Select Configure, Detailed Setup, and Partial Stroke.
Follow the prompts on the Field Communicator display
to configure the following partial stroke parameters:
PST Enable and View/Edit PST Variables.
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