Instruction Manual
D103785X012
Wiring Practices
June 2017
9
Section 2 Wiring Practices
22
Control System Requirements
There are several parameters that should be checked to ensure the control system is compatible with the
DVC6000 HW2 digital valve controller.
HART Filter
Depending on the control system you are using, a HART filter may be needed to allow HART communication. The
HART filter is a passive device that is inserted in field wiring from the HART loop. The filter is normally installed near the
field wiring terminals of the control system I/O (see figure 2‐1). Its purpose is to effectively isolate the control system
output from modulated HART communication signals and raise the impedance of the control system to allow HART
communication. For more information on the description and use of the HART filter, refer to the appropriate HART
filter instruction manual.
To determine if your system requires a filter contact your
Note
A HART filter is typically NOT required for any of the Emerson Automation Solutions control systems, including PROVOX
t
, RS3
t
,
and DeltaV
t
systems.
Figure 2‐1. HART Filter Application
DIGITAL VALVE
CONTROLLER
4‐20 mA + HART
VALVE
Tx
Tx
I/O
I/O
HART
FILTER
NON‐HART BASED DCS
A6188‐1
Voltage Available
The voltage available at the DVC6000 HW2 digital valve controller must be at least 10 VDC. The voltage available at
the instrument is not the actual voltage measured at the instrument when the instrument is connected. The voltage
measured at the instrument is limited by the instrument and is typically less than the voltage available.