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Applications of the F-I/O module
6.10 IO redundancy
6.10
IO redundancy
Definition
To set up IO redundancy, plug 2 F-AI 8xI 2-/4-wire HART HA I/O modules of the same type next
to each other in a redundant terminal block. You can find additional information on the possible
terminal blocks in section "Terminal blocks (Page 15)".
This terminal block connects the respective process signals of the two modules to a common
process terminal.
• The wiring work is lower compared to connecting separate I/O modules, because the
interconnection of the process signals is integrated into the system.
• The redundant signal processing of the sensors at module level increases the availability of
the system.
Note
IO redundancy is briefly described below.
You can find more detailed information in the Distributed I/O System; ET 200SP HA System
Manual, "IO redundancy" chapter.
Configuration and use
The following conditions apply to the setup and use of F-AI 8xI 2-/4-wire HART HA I/O modules
in IO redundancy:
Selection of hardware:
• Redundantly used I/O modules must be identical. This means they must have the same article
number, the same firmware version, and a compatible hardware release.
Installation:
• I/O modules of the same type are plugged in pairs next to each other in the same redundant
terminal block (type "TB45R-P32"; 6DL1193-6TP00-0DF1).
IO redundancy:
• The master module must always be configured at an even slot, the slave module at the
following odd slot.
• The two redundant I/O modules operate simultaneously and independently. Both modules
generate diagnostics, interrupts, messages, process values, etc.
58
F-AI 8xI 2-/4-wire HART HA
Equipment Manual, 09/2021, A5E50557845-AA
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