ABB Ability 800xA Series User Manual

A.4 Device Redundancy
The following fault conditions cannot be detected in the Linking Device itself and need
to be covered at application level:
• a loss of an H1 connection between the primary device and a subset of devices on
an H1 link
• a loss of an H1 connection between the secondary device and the entire H1 link or
a subset of devices on an H1 link
Make sure not to permute the H1 terminal blocks. An accidental permutation of the
H1 link connections at the secondary Linking Device will not be detected right away.
On application level, detection will not be possible before a redundancy switch-over
takes place or the live lists of primary and secondary Linking Device are being
compared manually.
2PAA114135-610 96
A Limits and Performance Data
A.4 Device Redundancy

ABB Ability 800xA Series Specifications

General

System Type	Distributed Control System (DCS)
Architecture	Client-server
Redundancy	Supports redundant controllers, communication networks, and I/O modules
Operating System	Microsoft Windows Server
Communication Protocols	OPC, Modbus, IEC 61850, PROFIBUS, Foundation Fieldbus
Integration	Supports integration with third-party systems and ABB products
Scalability	Highly scalable, from small to large installations
Cybersecurity	Built-in cybersecurity features including access control and network security
User Interface	Graphical user interface
Application Support	Supports a wide range of industrial applications including process control and safety