Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 106
Figure 9-1. Speed Sensor Smart-Plus Module
9.27.2—Installation
The modules slide into card guides in the control's chassis and plug into the motherboard. The modules
are held in place by two screws, one at the top and one at the bottom of the front panel. Also at the top
and bottom of the module are two handles which, when toggled (pushed outward), move the modules out
just far enough for the boards to disengage the motherboard connectors.
In a simplex system, each 4Ch Speed Module is connected through one low Density analog cable to one
Analog Input FTM. All of the I/O are accessible on the FTM.
Each of the module’s four speed channels accept either a passive magnetic pickup unit (MPU) or Eddy
probe. The number of MPU and Eddy inputs per module is determined by software configuration set at
the factory.
The item number of the module determines if the speed input is configured to MPU or Eddy input. Each
speed input channel can only accept one MPU or one Eddy probe. See Appendix A for module item
numbers.
A Eddy probe may be used to sense very low speeds. With a Eddy probe, speed can be sensed down to
1 Hz. See Figure 9-66 for MPU and Eddy probe wiring examples.
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