DeltaV Zones is a combination of hardware and software for connecting
separate DeltaV systems or Zones. An Inter-Zone Server (IZS) must be installed
in each DeltaV system to implement zones. The Inter-Zone Servers are connected
by an Inter-Zone Control Network (IZCN). The only function of the Inter-Zone
Servers and the Inter-Zone Control Network is to communicate inter-zone
operating data between systems. Refer to DeltaV Books Online for complete
information on implementing zones, zone-to-zone data communication, and
security considerations.
The following figure shows a simple Inter-Zone Control Network in which
two DeltaV systems are connected. It shows how the Inter-Zone Servers connect
to the DeltaV network and to each other.
Figure: Simple Inter-Zone Control Network
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100 m (max) straight-through cable. To
prevent ground loops, build this cable assembly with a shielded, metal-enclosed
RJ45 connector on one end and an isolated, plastic-enclosed RJ45 connector on
the other end. The metal connector end of this cable assembly/link must be
placed on the switch and not on the PC.
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100 m (max) straight-through cable. The
shield on the controller’s RJ45 connector connects only to a Faraday cage in
the controller; not to the controller’s DC ground. Therefore, the RJ45
connectors are floating and the single point of ground is made at the hub or
switch to which the controller is connected. Build this cable assembly with a
shielded, metal-enclosed RJ45 connector on both ends.
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