Type Dvc6030F On Quarter-Turn Actuators - Emerson Fisher Fieldvue DVC6030f Instruction Manual

29B1673-A / DOC
Figure 2-7. Type DVC6020f Digital Valve Controller with Long
Feedback Arm and Follower Arm Extension Mounted on a
Rotary Actuator
follower arm extension is included in the mounting kit.
Follow the instructions included with the mounting kit
to install the follower arm extension.
6. Mount the Type DVC6020f on the actuator as
follows:
D If required, a mounting adaptor is included in the
mounting kit. Attach the adaptor to the actuator as
shown in figure 2-5. Then attach the digital valve
controller assembly to the adaptor. The roller on the
digital valve controller feedback arm will contact the
actuator cam as it is being attached.
D If no mounting adaptor is required, attach the
digital valve controller assembly to the actuator or
mounting plate. The roller on the digital valve
controller feedback arm will contact the actuator cam
as it is being attached.
7. For long-stroke sliding-stem actuators, after the
mounting is complete, check to be sure the roller
aligns with the position mark on the cam (see
figure 2-4). If necessary, reposition the cam to attain
alignment.
Type DVC6030f on Quarter-Turn
Actuators
WARNING
Refer to the Installation WARNING at
the beginning of this section.
March 2006
FOLLOWER ARM
EXTENSION
MACHINE SCREW,
LOCK WASHER,
HEX NUT
CAP SCREW,
HEX SOCKET
CAP SCREW
CAM
If ordered as part of a control valve assembly, the
factory mounts the digital valve controller on the
actuator, makes pneumatic connections to the
actuator, sets up, and calibrates the instrument. If you
purchased the digital valve controller separately, you
will need a mounting kit to mount the digital valve
controller on the actuator. See the instructions that
come with the mounting kit for detailed information on
mounting the digital valve controller to a specific
actuator model.
Figure 2-6 shows the Type DVC6030f digital valve
controller mounted on a quarter-turn actuator. Refer to
figure 2-6 for parts locations. Refer to the following
guidelines when mounting on quarter-turn actuators:
Note
Due to NAMUR mounting limitations,
do not use the heavier stainless steel
Type DVC6030f in vibration service.
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 pneumatic
actuator, releasing all pressure from the actuator. Use
lock-out procedures to be sure that the above
measures stay in effect while working on the
equipment.
2. If necessary, remove the existing hub from the
actuator shaft.
3. If a positioner plate is required, attach the
positioner plate to the actuator as described in the
mounting kit instructions.
4. If required, attach the spacer to the actuator shaft.
Refer to figures 2-8 and 2-9. The travel indicator
assembly can have a starting position of 7:30 or
10:30. Determine the desired starting position then
proceed with the next step. Considering the top of the
digital valve controller as the 12 o'clock position, in the
next step attach the travel indicator, so that the pin is
positioned as follows:
D If increasing pressure from the digital valve
controller output A rotates the potentiometer shaft
clockwise (as viewed from the back of the
instrument), mount the travel indicator assembly such
that the arrow is in the 10:30 position, as shown in
figure 2-8.
Installation
2-9
2