Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 19
Figure 2-8. Output Flow
2.3.4—Redundant Inputs and Outputs
Two levels of redundancy are available. The first involves wiring two external input devices to two separate
input channels. See Figure 2-7. In the event of a failed sensor or a failure in the connection from the sensor
to the control, a valid input is still available
Figure 2-9. Redundant Sensors
The second level is wiring two external input devices to two separate I/O modules. See Figure 2-8. In the
event of a failure in one of the sensors, connections, cables, FTMs, or I/ O modules, a valid input is still
available.
Figure 2-10. Redundant Inputs
This process can be expanded for triplicated inputs. With triplicated inputs, redundant inputs are available if
an input fails. It is also possible to determine which input is not valid when using triplicated inputs.
2.3.5—Redundant Outputs
Redundancy can be added to the outputs as well. Additional external relays can be used to prevent a
faulted output from affecting the external device. For discrete outputs, this would require four relays for each
output. For the actuator outputs, a dual coil actuator can be used. The dual coils will allow one coil to
operate the actuator in the event of a failure.
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