The DPC (Diagnostic Power Conditioner) system is a power supply system for installing
FOUNDATION™ fieldbus H1 segments. The
system provides extensive diagnostic options
for monitoring FOUNDATION™ fieldbus segments and thus supports plant-wide asset
management.
A DPC system consists of one or more
DPC-49-MB-RC module racks, each with up
to eight DPC-49-IPS power supply modules
and one DPC-49-ADU or DPC-49-DU diagnostics module . Up to four H1 segments for
each module rack can be operated and monitored redundantly in the FOUNDATION™
fieldbus network. The diagnostic data of the
H1 segments can be transmitted via the HSE
interface module DPC-49-HSEFD/24VDC to
the higher level Asset Management system.
The module rack consist of a backplane and
the actual rack system for the power supply
modules and the diagnostics module.
The individual components of the system are
electrically linked via the connection terminals
of the backplane. From an electrical perspective, the backplane is to be considered to be
passive.

The power can be supplied via two 2-pole
screw connectors. The connection of the host
system is established per segment via removable 3-pole screw terminals. For the connection of the H1 segments to the fieldbus side,
each segment is individually connected with a
removable 3-pole screw terminal.
NOTE: If H1 applications are to be set up redundantly at the DPC system, they must be
connected to the field port as the host port is
limited to 21 mA.
The shielding is achieved via insulated shield
bus or via the 3-pole screw terminal, which is
internally connected with the M5 threaded bolt
for equipotential bonding. A further M5 threaded bolt for equipontential bonding is simply
connected to the housing.
For simple diagnostics processing, a connection is provided to the relay alarm contact of
the diagnostics module.

■ Module rack for up to eight power supply
modules and one diagnostic module for up
to four redundant H1 segments.
■ Redundant power supply
■ Removable terminal blocks with screw
connections
■ RJ45 connector for HSE fieldbus diagnostics2