Emerson Fisher FIELDVUE DVC6000f, Instruction Manual

Page: 39 / 384

Installation
December 2009 2-15
mounting the digital valve controller to a specific
actuator model.
Note
Refer to DVC6005f Base Unit mounting
guidelines on page 2-14 when
installing a DVC6015 remote feedback
unit.
The DVC6015 remote feedback unit mounts on
sliding-stem actuators with up to 102 mm (4 inch)
travel. Figure 2-1 shows a typical mounting on an
actuator with up to 51 mm (2 inch) travel. Figure 2-2
shows a typical mounting on actuators with 51 to 102
mm (2 to 4 inch) travel. For actuators with greater than
102 mm (4 inch) travel, see the guidelines for
mounting a DVC6025 remote feedback unit.
Note
While the housing differs on the
DVC6015 and the DVC6010f, feedback
parts are the same.
Refer to the following guidelines when mounting on
sliding-stem actuators with up to 4 inches of travel.
Where a key number is referenced, refer to
figure 8-7.
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 connector arm to the valve stem
connector.
3. Attach the mounting bracket to the digital valve
controller housing.
4. If valve travel exceeds 2 inches, a feedback arm
extension is attached to the existing 2-inch feedback
arm. Remove the existing bias spring (key 78) from
the 2-inch feedback arm (key 79). Attach the feedback
arm extension to the feedback arm (key 79) as shown
in figure 2-2.
5. Mount the digital valve controller on the actuator as
described in the mounting kit instructions.
6. Set the position of the feedback arm (key 79) on
the digital valve controller to the zero drive position
(zero pressure from Port A with Relay A) by inserting
the alignment pin (key 46) through the hole on the
feedback arm as follows:
For air-to-open actuators (i.e., the actuator
stem retracts into the actuator casing or cylinder as air
pressure to the casing or lower cylinder increases),
insert the alignment pin into the hole marked ‘‘A’’. For
this style actuator, the feedback arm rotates
counterclockwise, from A to B, as air pressure to the
casing or lower cylinder increases.
For air-to-close actuators (i.e., the actuator
stem extends from the actuator casing or cylinder as
air pressure to the casing or upper cylinder increases),
insert the alignment pin into the hole marked ‘‘B’’. For
this style actuator, the feedback arm rotates
clockwise, from B to A, as air pressure to the casing or
upper cylinder increases.
Note
When performing the following steps,
ensure there is enough clearance
between the adjustment arm and the
feedback arm to prevent interference
with the bias spring.
7. Apply lubricant to the pin of the adjustment arm. As
shown in figure 2-3, place the pin into the slot of the
feedback arm or feedback arm extension so that the
bias spring loads the pin against the side of the arm
with the valve travel markings.
8. Install the external lock washer on the adjustment
arm. Position the adjustment arm in the slot of the
connector arm and loosely install the flanged hex nut.
9. Slide the adjustment arm pin in the slot of the
connector arm until the pin is in line with the desired
valve travel marking. Tighten the flanged hex nut.
10. Remove the alignment pin (key 46) and store it in
the module base next to the I/P assembly.
11. After calibrating the instrument, attach the shield
with two machine screws.
DVC6025 on Long-Stroke (4 to 24 Inch
Travel) Sliding-Stem Actuators and
Rotary Actuators
If ordered as part of a control valve assembly, the
factory mounts the digital valve controller on the
2