Woodward MicroNet Simplex - Figure 4-2. Micronet Plus 14-Slot Chassis

Manual 26166V1 MicroNet Simplex & MicroNet Plus
Woodward 28
The MicroNet Plus chassis is composed of three 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 4-1. 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.
From a module connector standpoint, any I/O module can be installed in any of the slots designated for
I/O modules. However, when the application software is designed, each module will be assigned to a
specific slot and thereafter, the software will expect that specific I/O module to always be in its designated
slot.
FAN_4 FAN_6
FAN_2FAN_1 FAN_3
I/O
A3
I/O
A4
I/O
A5
I/O
A6
I/O
A7
I/O
A8
I/O
A9
I/O
A10
I/O
A11
I/O
A12
CPU
A1
I/O
A2
2-Slot
Power
Supply
PS1
I/O
A13
CPU
A14
2-Slot
Power
Supply
PS2
Figure 4-2. MicroNet Plus 14-Slot Chassis
CPU Slots (A1, A14)
Chassis slots A1 and A14 are designated as CPU compatible slots. These slots provide extra functionality
for monitoring fan status, chassis temperature status, and power supply status information. The CPU slots
also support operation of Redundant CPU’s and the associated CPU Failover functions. The CPU slots
are identical except for slot address, thus a CPU can be installed in either one to control the MicroNet
system.
 For simplex systems, CPU slot A14 can also be used as an I/O module slot.
 Live Insertion and removal is supported for field reparability.
 CPUs are located under different fan sets to improve reliability, airflow, and temperature
performance.
 CPU slots use VME-64 connectors on the CPU module slots for improved CPU Hot Swap
capabilities.
Power Supply Slots (PS1, PS2)
A smaller 2-slot wide power supply has been designed for the MicroNet Plus chassis, thus allowing (2)
more slots for I/O. Each power supply is located under different fan sets for improved reliability. The
redundant smart fans are located above and below each power-supply for improved airflow. Each power
supply provides input failure (AC_FAIL) and output failure (PWR_ALM) fault information to the CPU slots.
 Power supplies are located under different fan sets to improve reliability, airflow, and temperature
performance.
 Three different 2-slot wide power supplies are available for use: a low voltage (24 Vdc input), a high
voltage (120 Vac/dc input), and a high voltage 220 Vac input version. Refer to the power-supply
section for additional information.
Released