Woodward Vertex-Pro, Installation/Hardware Manual, Page: 18 / 112

Vertex-Pro Motor-Driven Compressor Control Manual 26489V1
8 Woodward
2.5—Vertex-Pro Simplex Operation
To use the MicroNet Plus for simplex operation, the CPU must be in the first user
slot (slot A1).

In the GAP application, select the MICRONET8 chassis and use the
CPU5200 in slot A1.

The CPU can only be the CPU5200.

Assign communication and I/O modules according to your application needs.

Compile and code your application using the Woodward GAP/Coder tools.

Use the AppManager Service Tool to load and start the application over
Ethernet.

After starting the application, the CPU will initialize the I/O and run the real-
time application.

System initialization is complete when all the I/O module fault LED's are
cleared.
2.6—Module Replacement
Chapter 9 contains Installation and Replacement procedures for VME Modules,
power supplies, relay boxes, and other devices. Individual CPU and I/O module
sections in Chapters 5 through 7 are an additional reference for installation and
replacement information.
Sections 4.2 contain additional details for power supply installation and
replacement. Note that power must be removed from the power supply input
before a module is removed or inserted.
BEFORE REMOVAL
!
RESET
MODULE
Live insertion and removal of the CPU5200 is allowed in a MicroNet
Plus chassis. These modules should be reset immediately before
removing them from the chassis. This notifies the module that it will
be removed and provides a graceful failover to another healthy CPU
module if available.
2.7—Latent Fault Detection
Because a redundant system can tolerate some single faults, it is possible for a
fault to go undetected. Undetected faults are termed latent faults. If another fault
occurs when a latent fault exists, the second fault could cause a shutdown. It is
important to detect a latent fault in a redundant system so that it may be repaired
before another fault occurs. Without a fully triplicated system it is not possible to
detect all latent faults, however most faults can be detected. For single or
redundant I/O points, fault detection is dependent on the application software to
detect its I/O faults.