Wiring Practices; Control System Requirements; Hart Filter - Emerson Fisher FIELDVUE DVC6000 Instruction Manual

DVC6000 Digital Valve Controllers
2

Wiring Practices

Control System Requirements

There are several parameters that should be checked
to ensure the control system is compatible with the
DVC6000 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 2-24). 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
2-30
NON-HART BASED
DCS
I/O I/O
HART
FILTER
Tx Tx
A6188-1/IL
Figure 2-24. HART Filter Application
4-20 mA
DIGITAL VALVE
CONTROLLER
VALVE
communication. For more information on the
description and use of the HART filter, refer to the
separate HART filter instruction manual.
Contact your Emerson Process Management sales
office if assistance is needed to determine if your
system requires a filter.
Note
A HART filter is typically NOT required
for any of the Emerson Process
Management control systems,
including PROVOXt, RS3t, and
DeltaVt systems.
September 2013