Installation
September 2013
2-25
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:
Emerson Process Management supplied
DVC6015, DVC6025 or DVC6035 feedback unit,
An under-traveled 10 kOhm potentiometer used
in conjunction with onboard 30 kOhm resistor, or
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.
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.
2. On the base unit, remove the feedback
connections terminal box cap (see figure 2-16).
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 2-21).
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.
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.
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