4
Cabling the AC 800F
4-64
4.3.1.3
Connecting a Profibus master redundancy
The Profibus module FI 830F is suitable for Profibus master redundancy. The
redundant AC 800F accommodating the redundant Profibus module can be
connected to the Profibus like any other Profibus node. It communicates with the
current Profibus master via the Profibus. Thus, the redundant unit is permanently
checked for proper functioning, over all communication levels. Observe the
instructions given above for connecting a Profibus via RS485.
The process data on the primary (i.e. active) AC 800F are permanently matched with
those on the secondary (i.e. redundant) AC 800F via the redundancy link. For this
purpose, a point-to-point connection is established between the two redundant
AC 800F. This ensures both rapid and deterministic data transfer.
Set the coding switch on the
Ethernet
module
to
the
appropriate
position
to
define
whether
or
not
the
Ethernet
module should have the special
features required for redundancy
communication. Refer to Section
5.4 for details.
If a change-over to redundancy
mode
occurs,
the
Profibus
module of the secondary unit
nearly bumplessly takes over all
nodes
on
the
Profibus
and
continues process control.
Fig. 4-40 Profibus master redundancy
4.3.1.4
Connecting a Profibus line redundancy
No line redundancy has been implemented in the Profibus module FI 830F. If,
however, an analysis of the system availability shows the necessity of redundant
Profibus cabling, it is recommended to use a redundancy link module RLM 01. This
module connects the RS485 interface of the Profibus module to two Profibus lines.
The data are then transmitted on both lines in parallel. In the receive branch of the
RLM 01 the data are analyzed by a special ASIC, and only those from the properly
working line are further transmitted. This intelligent handling of the two redundant
Profibus lines ensures that no data are lost or corrupted when a switch-over occurs.
Summary of Contents for AC 800F
Page 1: ... PROCESS AUTOMATION Freelance 2019 Mounting and Installation Instructions AC 800F Controller ...
Page 2: ......
Page 66: ...3 Mounting the AC 800F 3 38 ...
Page 168: ...4 Cabling the AC 800F 4 102 ...
Page 290: ...7 Functional Description of the Fieldbus Modules 7 36 ...
Page 317: ...10 Approvals certificates 10 1 10 Approvals certificates 10 1 ISO 9001 Fig 10 1 ISO 9001 ...
Page 318: ...10 Approvals certificates 10 2 Fig 10 2 ISO 9001 ...
Page 319: ...10 Approvals certificates 10 3 Fig 10 3 ISO 9001 ...
Page 320: ...10 Approvals certificates 10 4 Fig 10 4 ISO 9001 ...
Page 321: ...10 Approvals certificates 10 5 10 2 ISO 9000 Fig 10 5 ISO 9000 ...
Page 322: ...10 Approvals certificates 10 6 Fig 10 6 ISO 9000 ...
Page 323: ...10 Approvals certificates 10 7 10 3 CE Fig 10 7 CE certificate page 1 ...
Page 324: ...10 Approvals certificates 10 8 Fig 10 8 CE certificate page 2 ...
Page 325: ...10 Approvals certificates 10 9 Fig 10 9 CE certificate page 3 ...
Page 326: ...10 Approvals certificates 10 10 Fig 10 10CE certificate supplement ...
Page 327: ...10 Approvals certificates 10 11 10 4 CSA Fig 10 11 CSA certificate page 1 ...
Page 328: ...10 Approvals certificates 10 12 Fig 10 12 CSA certificate page 2 ...
Page 329: ...10 Approvals certificates 10 13 Fig 10 13 CSA certificate page 3 ...
Page 330: ...10 Approvals certificates 10 14 Fig 10 14 CSA certificate page 4 ...
Page 331: ...10 Approvals certificates 10 15 10 5 UL Fig 10 15 UL certificate ...
Page 332: ...10 Approvals certificates 10 16 Fig 10 16 UL certificate page 2 ...
Page 333: ...10 Approvals certificates 10 17 Fig 10 17 UL certificate page 3 ...
Page 334: ...10 Approvals certificates 10 18 Fig 10 18 UL certificate page 4 ...
Page 335: ...10 Approvals certificates 10 19 10 6 GUS certificate Fig 10 19 GUS certificate ...
Page 369: ...13 Glossary 13 18 Component of the Freelance 2000 System ...
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