Vertex-Pro Motor-Driven Compressor Control
Manual 26489V1
20
Woodward
Chapter 5.
CPUs
5.1—PowerPC CPU5200 Module (Motorola)
5.1.1—Module Description
The MicroNet PowerPC CPU Module contains a Motorola MPC5200 processor,
128 Mbyte DDR RAM, 64 MB of flash memory, a Real Time clock, and various
communication peripherals. These peripherals include (2) general use Ethernet
ports, (2) Real Time Network ports, (1) serial port, (1) one service port, and (2)
CAN ports. This module includes an FPGA to provide VMEbus master/slave
capability as well as other functions necessary for redundant systems.
The CPU5200 Module can operate in both simplex and redundant modes. Every
MicroNet Plus simplex control contains one CPU module located in the first I/O
slot of the MicroNet chassis. A redundant configuration will also have a CPU
located in the CPU2 location (slot 8 or slot 14 depending on which chassis is
used).
This module was designed and rated for –40 to +85 °C operation in the industrial
marketplace.
For CPU module installation and replacement instructions, see the instructions
for installing and replacing the VME module in Chapter 9, Installation and
Replacement Procedure.
BEFORE REMOVAL
!
RESET
MODULE
Live insertion and removal of this module is allowed in a MicroNet
Plus chassis. This module should be reset immediately before
removing it from the chassis. This notifies the module that it will be
removed and provides a graceful failover to another healthy CPU
module if available.
The CPU module runs the GAP application program. Figure 5-2 is a block
diagram of a CPU module. When the power is applied, the CPU module will
perform diagnostic tests, before running the application program.
The CPU module contains a battery to power the real time clock when power to
the control is off. This battery is not user-replaceable. During normal operation,
on-board circuitry keeps the battery charged. Once the battery is fully charged
(taking a maximum of three days), the battery will continue to run the clock for a
minimum of three months without power to the control. If power is removed from
the CPU module for longer than three months, the real time clock may need to be
reset. The resolution of the real time clock is 10 milliseconds.
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