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DVC7K Digital Valve Controllers
October 2023
Step 3—Connect the Electrical Wires
WARNING
Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection and
temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage
from fire or explosion.
Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area approval.
Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or
explosion.
To avoid personal injury resulting from electrical shock, do not exceed maximum input voltage specified on the product
nameplate. If the input voltage specified differs, do not exceed the lowest specified maximum input voltage.
Personal injury or property damage caused by fire or explosion may occur if electrical connections are attempted in a
potentially explosive atmosphere or in an area that has been classified as hazardous. Confirm that area classification and
atmosphere conditions permit safely exposing the terminal box before proceeding
The valve may move in an unexpected direction when power is applied to the digital valve controller. To avoid personal
injury and property damage caused by moving parts, keep hands, tools, and other objects away from the valve/actuator
assembly when applying power to the instrument.
Refer to the DVC7K instruction manual (D104767X012) for additional information.
The digital valve controller is normally powered by a control system output channel. Shielded cable will ensure proper
operation in electrically noisy environments.
Wire the digital valve controller as follows, refer to figure 24 and 26:
1. Unscrew the four screws and open the front cover.
2. If your digital valve controller is explosion proof (ExD) turn the lock screw counterclockwise to unlock the cap so the
cap can be unscrewed from the terminal box. For intrinsically safe (IS) digital valve controllers, there is no terminal
box cap to remove.
3. Bring the field wiring into the terminal box. When applicable, install conduit using local and national electrical codes
which apply to the application. Ensure all unused conduit entries are plugged.
4. Connect the control system output channel positive wire to the LOOP + screw terminal in the terminal box. Connect
the control system output channel negative (or return) wire to the LOOP - screw terminal in the terminal box.
WARNING
Personal injury or property damage, caused by fire or explosion, can result from the discharge of static electricity. Connect
2
a 14 AWG (2.08 mm
) ground strap between the digital valve controller and earth ground when flammable or hazardous
gases are present. Refer to national and local codes and standards for grounding requirements.
5. As shown in figure 24, two ground terminals are available for connecting a safety ground, earth ground, or drain
wire. The safety ground is electrically identical to the earth ground. Make connections to these terminals following
national and local codes and plant standards.
24
Quick Start Guide
D104766X012
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