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Presentation
The Premium Warm Standby redundancy offer, which is only compatible with
PL7 Pro software
,
ensures continuity of operation of a control system based on a
Premium platform in the event of failure of:
b
The central processing and communication functions
b
All or part of the I/O system
It is based on the principle of Normal/Backup redundancy with complete redundancy
of the main processing and communication functions, use of single shared I/O on the
Fipio bus and/or redundancy of in-rack I/O.
It covers all the requirements for availability when the PLC's mission is to monitor an
installation in continuous duty, indicate problems to a control station, and send the
supervision manager's control instructions to various locations on an extensive site.
It is suitable for processes which can tolerate a lack of control on the part of the PLC,
lasting 1 to 2 s (average time for changeover from the Normal to the Backup unit.
Areas of application:
b
In the commercial sector:
v
Building management system for a public site (tunnel, airport, signalling, etc.)
v
Control and monitoring of a water treatment or distribution station
v
Electrical management system
b
In the industrial sector:
v
Food and beverage processing
v
Slow chemical processes
v
Level or temperature monitoring, etc.
Operational safety and availability
The Warm Standby architecture ensures availability of the control system functions,
irrespective of the failure of a component in the system.
Operational safety
in
control systems
:
capacity
to provide a specified
service during the cycle
C
Safety
:
capacity of an entity to present no danger to people,
property and the environment
C
Availability:
capacity of an entity to
be operational at any
given moment or for a
given period of time
C
Reliability
:
capacity of an entity
to perform a service within a
given time
C
Maintainability
:
capacity of an
entity to be maintained or
returned to operational state
within a given time
C
Maintenance logistics
:
capacity
of an organization to provide the
necessary maintenance
resources
Safety
Availability
PremiumWarm Standby solution
Standard PLCs
Safety PLCs
Principle:
page 4/63
Functions:
pages 4/64 ...
References:
page 4/66
Connections:
page 4/67
Presentation
Modicon Premium automation
platform
Warm Standby system
PL7 Pro software
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