ABB 3BHE039203R0101 GVC736CE101 thyristor module

ABB 3BHE039203R0101 GVC736CE101 thyristor module

Technical data of product parameters

PM891 connects to the S800 I/O system through the optical Modulebus. It can act 3BHE039203R0101 GVC736CE101
as a stand-alone Process Controller, or as a controller performing local control tasks
in a control network.
Two PM891 controllers can function together as a redundant pair, with one PM891
acting as the primary controller and the other acting as the backup. The backup
controller takes over the process controller tasks if any hardware error occurs in the 3BHE039203R0101 GVC736CE101
primary controller.
The control network connectivity is obtained by two built in IEEE802.3 Ethernet
channels on PM891.
PM891 also provides a communication expansion bus (CEX-Bus) to which a
number of expansion modules can be connected. These modules offers connectivity
to a wide range of field bus and I/O systems. In case of a redundant pair, both 3BHE039203R0101 GVC736CE101
PM891s are connected to the same CEX-Bus and one of them can control the
modules.
Physically, the PM891 Processor Unit consists Processor unit redundancy is available for PM861, PM864, PM865, PM866, and
PM891. In this case, the controller contains two processor units, each including
memory for system and application software. One unit is acting as primary, the 3BHE039203R0101 GVC736CE101
other is backup (hot stand-by). The primary processor unit controls the process. The
backup stands by, ready to take over in case of a fault in the primary. The
changeover is done bumplessly and in less than 10 ms. During the changeover, the
process outputs are frozen.

Product picture display

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reminder

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