Emerson Fisher FIELDVUE DVC6000 HW2 Instruction Manual page 16

Wiring Practices
June 2017
Figure 2‐5. Terminal Details for Connecting a FIELDVUE DVC6005 HW2 Base Unit and a Three‐Resistor Series
(R1)
BASE UNIT TERMINATION BOX
(DVC6005 HW2)
3. Install the fixed resistor (R
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.
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 (R
5. Connect the second wire of the 3‐conductor shielded cable between the middle lead (wiper) of the external
potentiometer (R ) and Terminal 2 on the base unit.
pot
6. Connect the third wire of the 3‐conductor shielded cable between between a lead on fixed resistor (R
terminal #3 of the base unit.
7. Connect the available end‐lead on the potentiometer (R
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.
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 R
is 400 Ohms/in x 16" = 6.4 kOhm
pot(max)
D R
= 6.4 kOhm x 4.25 = 27.2 kOhm
1
D R
= 6.4 kOhm / 4 = 1.6 kOhm
2
16
3
2
(R
1
30kW
"
(R
THREE‐RESISTOR SERIES
) across the unlabeled bottom Terminal and Terminal #1. The bottom terminal does not
1
pot
)
2
)
pot
).
) with the available lead on fixed resistor (R
pot
Instruction Manual
D103785X012
) and
2
).
2