fisher_dvc6025_fieldvue
Quick Start Guide Supplement
D103421X012
January 2010
DVC6000 Digital Valve Controllers
Supplement to Fisherr FIELDVUEt DVC6000
Digital Valve Controller Quick Start Guide
Remote Mount Installation Guidelines
Table of Contents
DVC6005 Base Unit . . . . . . . . . . . . . . . . . . . . . . . . 2
Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pipestand Mounting . . . . . . . . . . . . . . . . . . . . . . . 2
DVC6015 on Sliding-Stem Actuators
Up to 102 mm (4 Inches) of Travel . . . . . . . . . 3
DVC6025 on Long-Stroke
(4 to 24 Inch Travel) Sliding-Stem . . . . . . . . . 6
DVC6035 on Quarter-Turn Actuators . . . . . . . . . 9
Remote Travel Sensor Connections . . . . . . . . . 11
Schematics and Nameplates . . . . . . . . . . . . . . . 15
WARNING
This supplement must be used in
conjunction with the DVC6000 quick
start guide (D102762X012). All
WARNINGS and CAUTIONS included
in the associated quick start guide
must be carefully read, understood,
and followed. Failure to do so may
result in personal injury or property
damage. If you have any questions
about these instructions, contact your
Emerson Process Management sales
office before proceeding.
This supplement contains mounting guidelines for
remote mount DVC6000 digital valve controllers. It
must be used in conjunction with the DVC6000 quick
start guide (D102762X012). Refer to the quick start
guide or the DVC6000 instruction manual
(D102794X012) for all other information pertaining to
installation of DVC6000 digital valve controllers.
Contact your Emerson Process Management sales
office if a copy of either of these documents is
required.
www.Fisher.com
W8373
Figure 1. FIELDVUE DVC6005 Base Unit and DVC6025
Feedback Unit Mounted on a Rotary Control Valve / Actuator
Do not install, operate, or maintain a DVC6000
digital valve controller without being fully trained and
qualified in valve, actuator, and accessory
installation, operation, and maintenance. To avoid
personal injury or property damage, it is important to
carefully read, understand, and follow all contents of
this supplement, and the associated quick start
guide, including all safety cautions and warnings. If
you have any questions about these instructions,
contact your Emerson Process Management sales
office before proceeding.
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
SPACER
1-INCH 1/4-20
HEX HEAD
SCREW
10C1796-A / Doc
MOUNTING
BRACKET
W8473 / IL
WALL MOUNTING
Figure 2. FIELDVUE DVC6005 Base Unit with Mounting
Bracket (Rear View)
Note
3-conductor shielded cable, 22 AWG
minimum wire size, is required for
connection between base unit and
feedback unit. Pneumatic tubing
between base unit output connection
and actuator has been tested to 15
meters (50 feet) maximum without
performance degradation.
STANDOFF
4-INCH 1/4-20
HEX HEAD SCREW
MOUNTING BRACKET
W8474 / IL
PIPESTAND MOUNTING
Figure 3. FIELDVUE DVC6005 Base Unit Mounting
DVC6005 Base Unit
For remote-mounted digital valve controllers, the
DVC6005 base unit ships separately from the control
valve and does not include tubing, fittings or wiring.
See the instructions that come with the mounting kit
for detailed information on mounting the digital valve
controller to a specific actuator model.
For remote-mounted instruments, mount the
DVC6005 base unit on a 50.8 mm (2-inch) pipestand
or wall. The included bracket is used for either
mounting method.
2
Wall Mounting
Refer to figures 2 and 3. Drill two holes in the wall
using the dimensions shown in figure 2. Attach the
mounting bracket to the base unit using four spacers
and 25.4 mm (1-inch) 1/4-20 hex head screws.
Attach the base unit to the wall using suitable screws
or bolts.
Pipestand Mounting
Refer to figure 3. Position a standoff on the back of
the base unit. Using two 101.6 mm (4-inch) 1/4-20
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
CAP SCREW, FLANGED
MACHINE SCREW
SHIELD
ADJUSTMENT ARM
CONNECTOR ARM
CAP SCREW
PLAIN WASHER
29B1674-A / DOC
Figure 4. FIELDVUE DVC6010 or DVC6015 Digital Valve Controller Mounted on Sliding-Stem Actuator with up to 2 Inches Travel
hex head screws loosely attach the base unit to the
pipestand with the mounting bracket. Position the
second standoff, then using the remaining 101.6 mm
(4-inch) hex head screws, securely fasten the base
unit to the pipe stand.
information on mounting the digital valve controller to
a specific actuator model.
Note
DVC6015 on Sliding-Stem
Actuators Up to 102 mm (4 Inches)
of Travel
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
Refer to DVC6005 Base Unit mounting
guidelines on page 2 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 4 shows a typical mounting on an
actuator with up to 51 mm (2 inch) travel. Figure 5
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.
3
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
HEX NUT
CAP SCREW, FLANGED
FEEDBACK ARM
EXTENSION (KEY 79),
BIAS SPRING (KEY 78)
LOCK WASHER
ADJUSTMENT ARM
(KEY 46)
SPACER
MACHINE SCREW, FLAT
HEAD
HEX NUT, FLANGED
MACHINE SCREW
LOCK WASHER
MACHINE SCREW,
LOCK WASHER,
HEX NUT
SHIELD
PLAIN WASHER
CONNECTOR ARM
Figure 5. FIELDVUE DVC6010 or DVC6015 Digital Valve Controller Mounted on Sliding-Stem Actuator with 2 to 4 Inches Travel
Note
While the housing differs on the
DVC6015 and the DVC6010, feedback
parts are the same.
Refer to the following guidelines when mounting on
sliding-stem actuators with up to 4 inches of travel.
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
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 from the 2-inch
feedback arm. Attach the feedback arm extension to
the feedback arm (key 79) as shown in figure 5.
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 no air position by
inserting the alignment pin (key 46) through the hole
on the feedback arm as follows:
D 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.
D 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.
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
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.
SPRING RELAXED
FEEDBACK
ARM
BIAS SPRING
7. Apply lubricant to the pin of the adjustment arm.
As shown in figure 6, 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.
ADJUSTMENT
ARM PIN
A7209-1
BIAS
SPRING
SPRING UNDER TENSION OF
ADJUSTMENT ARM PIN
Figure 6. Locating Adjustment Arm Pin in Feedback Arm
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.
5
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
CAM/ROLLER POSITION MARK
A
January 2010
LOCK WASHER
CAP SCREW
CAP SCREW, HEX SOCKET
PLAIN WASHER
HEX NUT
STUD, CONT
THREAD
CAM
MOUNTING PLATE
VENT
STUD, CONT THREAD
HEX NUT
29B1665-B / DOC
VENT ADAPTOR
A
PLAIN WASHER
SECTION A‐A
SPACER
Figure 7. FIELDVUE DVC6020 or DVC6025 Digital Valve Controller Mounted on Long-Stroke Sliding-Stem Actuator
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
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.
Note
Refer to DVC6005 Base Unit mounting
guidelines on page 2 when installing a
DVC6015 remote feedback unit.
DVC6025 remote feedback units use a cam and
roller as the feedback mechanism. Figure 7 shows
6
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 8 and 9 show
examples of mounting on rotary actuators.
Note
While the housing differs on the
DVC6025 and the DVC6020, feedback
parts are the same.
As shown in figure 8, 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]. Make sure the correct
feedback arm is installed on the digital valve
controller before beginning the mounting procedure.
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
MACHINE SCREW
MOUNTING ADAPTOR
CAP SCREW, HEX SOCKET
CAP SCREW,
HEX SOCKET
CAM
29B1672-A / DOC
MACHINE SCREW
CAM
29B2094-A / DOC
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)
Figure 8. FIELDVUE DVC6020 or DVC6025 Digital Valve Controller Mounted on Rotary Actuator
FOLLOWER ARM
EXTENSION
MACHINE SCREW,
LOCK WASHER,
HEX NUT
CAP SCREW,
HEX SOCKET
CAP SCREW
29B1673-A / DOC
CAM
Figure 9. FIELDVUE DVC6020 or DVC6025 Digital Valve
Controller with Long Feedback Arm and Follower Arm
Extension Mounted on a Rotary Actuator
Refer to figures 7, 8, and 9 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
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 a cam is not already installed on the actuator,
install the cam as described in the instructions
included with the mounting kit. For sliding-stem
actuators, the cam is installed on the stem
connector.
3. If a mounting plate is required, fasten the
mounting plate to the actuator.
4. For applications that require remote venting, a
pipe-away bracket kit is available. Follow the
instructions included with the kit to replace the
existing mounting bracket on the digital valve
controller with the pipe-away bracket and to transfer
the feedback parts from the existing mounting
bracket to the pipe-away bracket.
7
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
5. Larger size actuators may require a follower arm
extension, as shown in figure 9. If required, the
follower arm extension is included in the mounting
kit. Follow the instructions included with the
mounting kit to install the follower arm extension.
MOUNTING
ADAPTER
6. Apply anti-seize (key 64) to the arm assembly pin
as shown in figure 10.
7. Mount the DVC6025 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 8. 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.
8. 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 7). If necessary, reposition the cam to attain
alignment.
8
January 2010
MOUNTING
BRACKET
BIAS SPRING
ARM ASSEMBLY PIN
ARM ASSEMBLY
FEEDBACK
ARM ASSEMBLY
Figure 10. Locating Adjustment Arm Pin in Feedback Arm of a
FIELDVUE DVC6025 Digital Valve Controller
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
MOUNTING
BRACKET
FEEDBACK ARM
TRAVEL INDICATOR PIN
29B1703-A / DOC
SPACER
TRAVEL INDICATOR
19B3879−A / DOC
Figure 11. Mounting a FIELDVUE DVC6030 or DVC6035 Digital Valve Controller on a Rotary Actuator
(Fisher 1032 Size 425A Shown)
DVC6035 on Quarter-Turn
Actuators
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.
Note
Refer to DVC6005 Base Unit mounting
guidelines on page 2 when installing a
DVC6015 remote feedback unit.
Figure 11 shows an example of mounting on a
quarter-turn actuator. Refer to figure 11 for parts
locations. Refer to the following guidelines when
mounting on quarter-turn actuators:
Note
While the housing differs on the
DVC6035 and the DVC6030, feedback
parts are the same.
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.
9
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
DVC6035
FEEDBACK ARM
MOVEMENT
DVC6035
FEEDBACK ARM
MOVEMENT
HOLE A
HOLE B
E0989
49B7988 / Doc
ACTUATOR SHAFT MOVEMENT
STARTING POSITION OF THE TRAVEL
INDICATOR ASSEMBLY IF INCREASING
PRESSURE FROM OUTPUT A DRIVES
THE INDICATOR CLOCKWISE. THE
POTENTIOMETER SHAFT WILL ROTATE
COUNTERCLOCKWISE AS VIEWED FROM
THE BACK OF THE INSTRUMENT.
NOTE: DVC6035 TRAVEL COUNTS
(COUNTERCLOCKWISE) = 600 200
ACTUATOR SHAFT MOVEMENT
STARTING POSITION OF THE TRAVEL
INDICATOR ASSEMBLY IF INCREASING
PRESSURE FROM OUTPUT A DRIVES
THE INDICATOR COUNTERCLOCKWIS
THE POTENTIOMETER SHAFT WILL
ROTATE CLOCKWISE AS VIEWED
FROM THE BACK OF THE INSTRUMEN
NOTE: DVC6035 TRAVEL COUNTS
(CLOCKWISE) = 3400 200
TRAVEL
INDICATOR PIN
48B4164-B / DOC
FEEDBACK ARM
BIAS SPRING
Figure 13. Positioning Travel Indicator Pin in the Feedback
Arm (Viewed as if Looking from the FIELDVUE DVC6035
toward the Actuator)
Figure 12. FIELDVUE DVC6035 Travel Indicator Installation
4. If required, attach the spacer to the actuator
shaft.
Refer to figure 12. 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 remote travel
sensor 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 digital valve
controllers 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 12.
Reference figure 2-7 in the quick start guide if
additional guidance is needed.
D If increasing pressure from the digital valve
controller output A rotates the digital valve
controllers potentiometer shaft
counterclockwise (as viewed from the back of
the instrument), mount the travel indicator
assembly such that the arrow is in the 7:30 position,
as shown in figure 12. Reference figure 2-8 in the
quick start guide if additional guidance is needed.
10
Note
ValveLink software and the Field
Communicator use the convention of
clockwise and counterclockwise when
viewing the potentiometer shaft from
the back of the FIELDVUE instrument
(figure 12).
5. Attach the travel indicator, to the shaft connector
or spacer as described in the mounting kit
instructions.
6. Attach the mounting bracket to the digital valve
controller.
7. Position the digital valve controller so that the pin
on the travel indicator, engages the slot in the
feedback arm and that the bias spring loads the pin
as shown in figure 13. Attach the digital valve
controller to the actuator or positioner plate.
8. If a travel indicator scale is included in the
mounting kit, attach the scale as described in the
mounting kit instructions.
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
FEEDBACK CONNECTIONS
TERMINAL BOX
W8477 / IL
W8475 / IL
GROUND
SCREW
BASE UNIT
FEEDBACK UNIT
TO FEEDBACK UNIT TERMINAL 3
TO FEEDBACK UNIT TERMINAL 2
TO FEEDBACK UNIT TERMINAL 1
TERMINAL 1
TERMINAL 2
TERMINAL 3
W8476 / IL
W8478-1 / IL
FEEDBACK CONNECTIONS TERMINAL BOX
FEEDBACK UNIT
Figure 14. Terminal Details for Connecting Base Unit and Feedback Units of Remote-Mounted Digital Valve Controllers
Remote Travel Sensor Connections
The DVC6005 base unit is designed to receive travel
information via a remote sensor. The remote can be
any of the following:
D Emerson Process Management supplied
DVC6015, DVC6025 or DVC6035 feedback unit,
D An under-traveled 10 kOhm potentiometer
used in conjunction with onboard 30 kOhm resistor,
or
D A potentiometer used in conjunction with two
fixed resistors (potentiometer travel is the same as
actuator travel).
WARNING
Personal injury or property damage,
caused by wiring failure, can result if
the feedback wiring connecting the
base unit with the remote feedback
unit shares a conduit with any other
power or signal wiring.
Do not place feedback wiring in the
same conduit as other power or signal
wiring.
11
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
Note
3-conductor shielded cable, 22 AWG
minimum wire size, is required for
connection between base unit and
feedback unit. Pneumatic tubing
between base unit output connection
and actuator has been tested to 15
meters (50 feet) maximum without
performance degradation.
Using the DVC6015, DVC6025 &
DVC6035 Feedback Unit as a Remote
Travel Sensor
1. On the feedback unit, remove the housing cap.
January 2010
Using an External 10 kOhm External
Potentiometer as a Remote Travel
Sensor
Note
Potentiometer travel must be between
1.3 and 1.6 times greater than the
actuator travel. For example: if an
actuator has a travel of 9 inches, then a
linear potentiometer must be selected
with a rated travel between 11.7 and
14.4 inches. The resistive element must
be tapered from 0 kOhm to 10 kOhm
over rated travel of the potentiometer.
The actuator will only use 63 to 76 % of
the potentiometer rated travel.
2. On the base unit, remove the feedback
connections terminal box cap (see figure 14).
3. If necessary, install conduit between the
feedback unit and the base unit following applicable
local and national electrical codes. Route the
3-conductor shielded cable between the two units
(refer to
figure 14).
4. Connect one wire of the 3-conductor shielded
cable between terminal 1 on the feedback unit and
terminal 1 on the base unit.
5. Connect the second wire of the 3-conductor
shielded cable between terminal 2 on the feedback
unit and terminal 2 on the base unit.
6. Connect the third wire of the 3-conductor
shielded cable between terminal 3 on the feedback
unit and terminal 3 on the base unit.
7. Connect the cable shield or drain wire to the
ground screw in the feedback connections terminal
box of the base unit.
Note
Do not connect the shield or drain wire
to any terminal on the feedback unit, to
the earth ground, or any other
alternative ground.
8. Replace and hand-tighten all covers.
12
Note
The digital valve controller must be
configured using the SStem/Roller
selection on the menu of the
appropriate setup device.
The base unit (DVC6005) was designed to work with
a 40 kOhm potentiometer for travel feedback.
However, there are linear potentiometers that are
readily available with a rated resistance of 10 kOhm.
Therefore, the feedback terminal box of the
DVC6005 contains an additional 30 kOhm fixed
resistor that may be added to the circuit. This brings
the total resistance up to the required 40 kOhm.
1. Mount the external 10 kOhm potentiometer to the
actuator such that the mid-travel position of the
potentiometer (5 kOhm) corresponds to the
mid-travel position of the actuator. This will leave an
equal amount of unused resistive element on both
ends of the travel, which is required by the digital
valve controller to function properly.
2. On the base unit, remove the feedback
connections terminal box cap (see figure 15).
3. If necessary, install conduit between the
potentiometer and the base unit following applicable
local and national electrical codes. Route the
3-conductor shielded cable between the two units
(refer to figure 15).
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
4. Connect one wire of the 3-conductor shielded
cable between the terminal labeled “30kW” on the
base unit and one end lead of the potentiometer.
6. Connect the third wire of the 3-conductor
shielded cable between Terminal 3 on the base unit
and the other end-lead of the 10 kOhm
potentiometer.
7. Connect the cable shield or drain wire to the
ground screw in the feedback connections terminal
box of the base unit. Do not connect the shield or
drain wire to the external potentiometer.
8. Replace and tighten the base unit cover.
Using a Potentiometer with Two Fixed
Resistors as a Remote Travel Sensor
Perform the following procedure if a potentiometer is
used with the same, or slightly longer travel than the
actuator’s travel.
2
INTERNAL
1
(30k W)
5. Connect the second wire of the 3-conductor
shielded cable between the middle lead (wiper) of
the 10 kOhm potentiometer to Terminal 2 on the
base unit.
3
"
10k W
30k
BASE UNIT TERMINATION BOX
(DVC6005)
3RD PARTY FEEDBACK ELEMENT
(WITH 10k W POTENTIOMETER)
Figure 15. Terminal Details for Connecting a FIELDVUE
DVC6005 Base Unit and a 10k Ohm External Potentiometer
This procedure uses three resistors connected in
series, two fixed resistors and one potentiometer.
Three conditions must be met for the resistor
combination to correctly operate the digital valve
controller:
D The maximum resistance of the potentiometer
(Rpot(max)) must be between 3.9 kOhm and 10
kOhm.
D The resistance of R1 is 4.25 times greater than
Rpot(max).
Note
The potentiometer must be capable of
resistance close to 0 Ohms.
D The resistance of R2 is 4 times less than
Rpot(max).
WARNING
CAUTION
To prevent damage to the
potentiometer, ensure that it is free to
travel the entire length of the actuator’s
travel.
Note
The digital valve controller must be
configured using the SStem/Roller
selection on the menu of the
appropriate setup device.
To avoid personal injury or property
damage from an uncontrolled process
ensure that the R1 resistor is properly
insulated before installing it in the
terminal box.
1. On the base unit, remove the feedback
connections terminal box cap (see figure 16).
2. If necessary, install conduit between the
two-resistor series and the base unit following
applicable local and national electrical codes. Route
the 3-conductor shielded cable between the two
units (refer to figure 16).
3. Install the fixed resistor (R1) across the unlabeled
bottom Terminal and Terminal #1. The bottom
terminal does not have a screw. The screw on the
30 kOhm terminal can be used. R1 must be properly
insulated when installed in the terminal box to
prevent personal injury or property damage.
13
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
Test Connections
3
2
(R2)
WARNING
1
30kW
"
(R1)
BASE UNIT TERMINATION BOX
(DVC6005)
(Rpot)
THREE-RESISTOR SERIES
Figure 16. Terminal Details for Connecting a FIELDVUE
DVC6005 Base Unit and a Three-Resistor Series
4. Connect one wire of the 3-conductor shielded
cable between the unlabeled bottom Terminal on the
base unit and an end-lead of the external
potentiometer (Rpot).
5. Connect the second wire of the 3-conductor
shielded cable between the middle lead (wiper) of
the external potentiometer (Rpot) and Terminal 2 on
the base unit.
Personal injury or property damage
caused by fire or explosion may occur
if this connection is attempted in a
potentially explosive atmosphere, or
in an area that has been classified as
hazardous. Confirm that area
classification and atmosphere
conditions permit the safe removal of
the terminal box cap before
proceeding.
Test connections inside the terminal box can be
used to measure loop current across a 1 ohm
resistor.
1. Remove the terminal box cap.
6. Connect the third wire of the 3-conductor
shielded cable between between a lead on fixed
resistor (R2) and terminal #3 of the base unit.
2. Adjust the test meter to measure a range of 0.001
to 0.1 volts.
7. Connect the available end-lead on the
potentiometer (Rpot) with the available lead on fixed
resistor (R2).
3. Connect the positive lead of the test meter to the
TEST + connection and the negative lead to the
TEST − connection inside the terminal box.
8. Connect the cable shield or drain wire to the
ground screw in the feedback connections terminal
box of the base unit. Do not connect the shield or
drain wire to the two-resistor series.
4. Measure Loop current as:
9. Replace and tighten the base unit cover.
Example: Using a linear potentiometer rated at
400 Ohms/inch on an actuator with 16” of travel.
D Rpot(max) is 400 Ohms/in x 16” = 6.4 kOhm
D R1 = 6.4 kOhm x 4.25 = 27.2 kOhm
D R2 = 6.4 kOhm / 4 = 1.6 kOhm
14
Voltage (on test meter) 1000 = milliamps
example:
Test meter Voltage X 1000 = Loop Milliamps
0.004 X1000 = 4.0 milliamperes
0.020 X 1000 = 20.0 milliamperes
5. Remove test leads and replace the terminal box
cover.
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
Schematics and Nameplates
GE42818 sheets 5 and 8
Figure 17. CSA Schematic for FIELDVUE DVC6005 with DVC6015, DVC6025, and DVC6035
DVC6005
DVC6005—LABEL FOR
NATURAL GAS CERTIFIED
TERMINAL BOX
DVC6015, DVC6025, DVC6035
Figure 18. CSA Nameplates for FIELDVUE DVC6005, DVC6015, DVC6025, and DVC6035
15
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
GE42819−A Sheet 5 and 8
Figure 19. FM Schematic for FIELDVUE DVC6005 with DVC6015, DVC6025, and DVC6035
DVC6005
DVC6005—LABEL FOR
NATURAL GAS CERTIFIED
TERMINAL BOX
DVC6015, DVC6025, DVC6035
Figure 20. FM Nameplates for FIELDVUE DVC6005, DVC6015, DVC6025, and DVC6035
16
Quick Start Guide Supplement
January 2010
DVC6000 Digital Valve Controllers
DVC6005
DVC6015, DVC6025, DVC6035
Figure 21. ATEX Nameplates; Intrinsically Safe, Dust−Tight
DVC6005
DVC6015, DVC6025, DVC6035
Figure 22. ATEX Nameplates; Flameproof, Dust−Tight
17
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
DVC6005
DVC6015, DVC6025, DVC6035
Figure 23. ATEX Nameplates; Type n, Dust−Tight
18
January 2010
Quick Start Guide Supplement
January 2010
DVC6000 Digital Valve Controllers
GE42990
Sheet 5 and 8 of 8
Figure 24. IECEx Loop Schematic for FIELDVUE DVC6005 with DVC6015, DVC6025, and DVC6035
DVC6005
DVC6015, DVC6025, DVC6035
Figure 25. IECEx Nameplates; Intrinsically Safe, Type n, Flameproof
19
Quick Start Guide Supplement
DVC6000 Digital Valve Controllers
January 2010
Note
Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use, or maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end user.
Fisher and FIELDVUE are marks owned by one of the companies in the Emerson Process Management business division of Emerson Electric Co.
Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are
the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they
are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or
applicability. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the
designs or specifications of such products at any time without notice. Neither Emerson, Emerson Process Management, nor any of their affiliated
entities assume responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of
any product remains solely with the purchaser and end-user.
Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
20
EFisher
Controls International LLC 2010; All Rights Reserved
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