Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 35
4.3—Simplex 6-Slot I/O
This chassis contains six slots for CPU and I/O modules. Normally, this allows one CPU module and five
I/O modules. In addition to the six CPU – I/O slots, two power supply positions are provided, which allows
for redundant power input. Each power supply module occupies three slots of chassis space. The total
width of the chassis is therefore twelve slots wide, when counting both power supply and I/O slots.
If a power supply or I/O module slot is not occupied, it must be filled with a blanking plate (3799-301) to
maintain proper cooling flow through the chassis.
4.3.1—Specification
The MicroNet is
designed around a modular 6-slot chassis (block). Each block consists of a pre-molded
cage with a fan for cooling and a temperature switch for high temperature detection. The chassis are
cooled by forced air, and either a module or a module blank must be installed in every slot to maintain
correct air flow. The fans run whenever power is applied to the system.
The simplex six slot MicroNet control is composed of two blocks with a motherboard inserted in the back
of the assembly to make connections between the fans, switches, power supplies, and control modules.
See Figure 4-10. The modules use the VERSAmodule Eurocard (VME) bus standard for connector
specification and data transfer. Slot-to-slot logic and power connections are made through an etched-
circuit motherboard. I/O connections are made through cables from the front of the boards to terminal
blocks in the cabinet.
Figure 4-9. Simplex MicroNet 6-Slot I/O
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