Emerson Fisher FIELDVUE DVC6000f, Instruction Manual, Page: 34 / 384

DVC6000f Digital Valve Controllers
December 2009 2-10
Figure 2-5. FIELDVUE DVC6020f Digital Valve Controller Mounted on Rotary Actuator
TYPICAL MOUNTING WITH SHORT FEEDBACK ARM
(FISHER 1052 SIZE 33 ACTUATOR SHOWN)
TYPICAL MOUNTING WITH LONG FEEDBACK ARM
(FISHER 1061 SIZE 30-68 ACTUATOR SHOWN)
29B2094-A / DOC
29B1672-A / DOC
MOUNTING ADAPTOR
CAP SCREW, HEX SOCKET
CAM
MACHINE SCREW
MACHINE SCREW
CAP SCREW,
HEX SOCKET
CAM
Note
Do not use the stainless steel
DVC6020fS in high vibration service
where the mounting bracket uses
standoffs (spacers) to mount to the
actuator.
The DVC6020f digital valve controller uses a cam
(designed for linear response) and roller as the
feedback mechanism. Figure 2-4 shows an example of
mounting on sliding-stem actuators with travels from 4
inches to 24 inches. Some long-stroke applications will
require an actuator with a tapped lower yoke boss.
Figures 2-5 and 2-6 show the DVC6020f mounted on
rotary actuators.
As shown in figure 2-5, two feedback arms are
available for the digital valve controller. Most
long-stroke sliding-stem and rotary actuator
installations use the long feedback arm [62 mm (2.45
inches) from roller to pivot point]. Installations on 1051
size 33 and 1052 size 20 and 33 actuators use the
short feedback arm [54 mm (2.13 inches) from roller to
pivot point]. Verify that the correct feedback arm is
Figure 2-6. FIELDVUE DVC6020f Digital Valve Controller with
Long Feedback Arm and Follower Arm Extension Mounted on
a Rotary Actuator
CAP SCREW,
HEX SOCKET
CAM
FOLLOWER ARM
EXTENSION
MACHINE SCREW,
LOCK WASHER,
HEX NUT
CAP SCREW
29B1673-A / DOC
installed on the digital valve controller before
beginning the mounting procedure.
Refer to figures 2-4, 2-5, and 2-6 for parts locations.
Refer to the following guidelines when mounting on
sliding-stem actuators with 4 to 24 inches of travel or
on rotary actuators:
1. Isolate the control valve from the process line
pressur and release pressure from both sides of the
valve body. Shut off all pressure lines to the
2