Fisher FIELDVUE DVC2000 Quick Start Manual page 14

DVC2000 Digital Valve Controller
July 2017
Quarter‐Turn (Rotary) Actuators
The DVC2000 digital valve controller can be mounted to any quarter‐turn (rotary) actuator, as well as those that
comply with the NAMUR guidelines. A mounting bracket and associated hardware are required. Refer to figure 13.
Figure 13. For Rotary Actuators (with Typical Mounting Bracket Shown)
W8835
1. Isolate the control valve from the process line pressure and release pressure from both sides of the valve body. Shut
off all pressure lines to the actuator, releasing all pressure from the actuator. Use lock‐out procedures to be sure
that the above measures stay in effect while you work on the equipment.
2. Attach the magnet assembly to the actuator shaft. At mid‐travel, the flats on the magnet assembly should be
approximately parallel to the channel on the back of the DVC2000 housing, as shown in figure 14.
3. Install the mounting bracket on the actuator.
4. Attach the digital valve controller to the mounting bracket using the 4 mounting bolts, as shown in figure 13.
5. Check for clearance between the magnet assembly and the positioner feedback slot.
6. Install tubing between the actuator casing and the pneumatic positioner output connection that has the arrow
pointing away from the opening. See figure 7.
Figure 14. Magnetic Assembly Orientation on Quarter‐Turn Actuators
ORIENTATION
AT ONE TRAVEL
EXTREME
ORIENTATION
AT MID‐TRAVEL
(FLATS PARALLEL
TO DVC2000
CHANNEL)
ORIENTATION
AT THE OTHER
TRAVEL EXTREME
1 THIS EXAMPLE SHOWS AN ACTUATOR WITH 90_ TRAVEL. ON AN ACTUATOR THAT
HAS LESS THAN 90_ TRAVEL THE MAGNET ASSEMBLY MAY NOT BE PARALLEL AT THE
MID-TRAVEL POINT. TO VERIFY THE MAGNET ASSEMBLY POSITION IS IN WORKING RANGE,
CONFIRM TRAVEL COUNTS ARE WITHIN THE EXPECTED RANGE OF 175-3800 USING
VALVELINK SOFTWARE OR A FIELD COMMUNICATOR.
14
M6 MOUNTING
BOLTS (4)
1
W8836
Quick Start Guide
D103203X012