UFC911B106 UFC911B108 ABB Controller module PLC card expansion interface

Product Details

Product Description

Product Description
UFC911B106 UFC911B108 ABB Controller module PLC card expansion interface
UFC911B106 UFC911B108 ABB Controller module PLC card expansion interface
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Redundant Optical ModuleBus
In redundant AC 800M HI systems, the redundant optical Cluster Modems enables
redundant ModuleBus communication. Each PM865 is connected to one Cluster
Modem. If one of the optical buses fails, communication is maintained by switching
to the other AC 800M HI processor unit, this does not imply a switch over to
redundant I/O modules.
Redundant Electrical ModuleBus
This is achieved by using optical Cluster Modems and Module Termination Units
(MTUs) designed for housing redundant I/O modules. To take advantage of
redundant electrical ModuleBus, one also needs to use two I/O modules, because an
I/O module is only connected to one of the electrical ModuleBuses.
Failures related to an electrical ModuleBus causes the Cluster Modem(s) to switch
to the second electrical ModuleBus. As a consequence, primary I/O modules are
changed.
Redundant High Integrity I/O Modules
Requires use of optical Cluster Modems and MTUs intended for redundant I/O
modules.

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