Product Overview
415ov3a
June 25, 2007 - Page 1
Bristol
®
ControlWave
®
PAC Redundancy
www.EmersonProcess.com/Remote
Remote Automation Solutions
Features
Process Control and Communications Redundancy
Dual CPU, Dual Power Supply Sequencers
Automatic Failure Detection
Automatic Switchover to Hot Standby Controller
High Reliability
No Single Point of Failure
Communication Channel Switching
Alarm and Historical Data Backup
No programming required for redundancy data
transfer
Upgrade programs on the fly
FTP Server
Convenient Packaging
Redundant systems are offered for critical processes
and harsh applications that require maximum
operational readiness and system availability.
Bristol® ControlWave® PAC Redundant Systems,
from Emerson Process Management, are designed
to prevent a single point of failure from shutting
down the system. This design delivers a redundant
system that provides high availability, reliability
and safety.
CPU Hot Standby – In the event of a failure of the
primary CPU, the system will automatically switch
to the Hot Standby Backup CPU. All process control
and communication functions are automatically
switched to the backup. This method offers a high
degree of control reliability and system availability
at the most economical cost.
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Data Backup – The standby CPU is automatically
updated via Ethernet link to the on-line unit. In
addition to real-time data backup, ControlWave
also provides backup of all alarm events and the
distributed historical database. These functions
are all pre-configured, and no control program
-
ming is required to implement the redundancy
functionality.
Controlwave Redundancy Systems include a
stainless steel chassis that houses the primary
and standby CPU’s and Power Supply Modules.
The chassis also house the ControlWave CPU and
Communications Redundancy Switch Module.
The Switch Module allows automatic and manual
selection of the primary controller CPU in case of
hardware failure, and will additionally switch up
to four serial communication ports to the selected
primary CPU of the pair.
ControlWave I/O Expansion Racks or Remote I/O
Modules are used for the process interface.
