2 Equipment Description
2.8 IOP Card Files
R688 HPM High-Performance Process Manager Service 59
December 2020 Honeywell
Redundant AO IOPs
When an Analog Output FTA interfaces with two IOPs through separate cables, and an automatic
selector switch on the FTA selects which IOP’s output drives the field wiring terminal connectors on the
FTA. The following figure is an illustration of an Analog Output FTA interface with two Analog Output
IOPs.
Figure 8 Analog Output FTA with Redundant Analog Output IOPs
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