990XCP98000 SQUARE D, 990XCP98000 Datasheet - Page 11
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990XCP98000
Manufacturer Part Number
990XCP98000
Description
QUANTUM CPU BATTERY FOR S
Manufacturer
SQUARE D
Datasheet
1.990XCP98000.pdf
(463 pages)
Specifications of 990XCP98000
Rohs Compliant
YES
Battery Capacity
1800mAh
Battery Technology
Lithium
Battery Voltage
3V
Battery Terminals
Connector
Weight
0.12lb
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Presentation
(continued)
Modicon
automation platform
Safety PLCs
Safety Integrity Level (SIL) has become a synonym for functional safety.
SIL defines the level of performance or reliability of an electrical or electronic system
in terms of its safety. Hence, the SIL is an indicator of a system's capability of
performing safety-related tasks.
Standard 61508 “Functional Safety of Electrical/Electronic/Programmable Electronic
Safety-Related Systems” was published in 1998 and validated in 2002.
This new safety standard was the first to define safety requirements for control
systems independently of the application. IEC 61508 is a technical standard
covering the functional safety of electrical or electronic equipment. A system is said
to be safe if it performs one or more specific functions in such a way as to keep any
risks to an acceptable minimum. Such functions are defined as being safety
functions.
IEC 61508 contains general requirements for minimizing the following risks:
b
b
b
b
b
b
b
While IEC 61508 is primarily intended for manufacturers of components for
protecting equipment and products, standard IEC 61511, Functional Safety –
Technical Safety Systems for the Process Industry, is aimed at users and designers
of safety equipment.
IEC 61511 provides recommendations and is meant to help assess the risk of
damage to installations as well as facilitate the selection of safety components.
IEC 61511 is specific to industrial processes:
b
b
or equipment.
TÜV is a group of companies specializing in authorizing IEC 61508 certification.
One of these companies, TÜV Rheinland (Germany), is a world-renowned leader in
safety-related systems.
Recognized as one of the world's best certification agencies, TÜV Rheinland has the
backing of both insurance companies and governments.
Process safety: General (continued)
Safety Integrity Level (SIL)
Safety standards (IEC 61508 and IEC 61511)
TÜV Rheinland
Functional Safety of Electrical/Electronic/Programmable
Incorrect specifications of the system, hardware or software
Omissions in the specifications
Random failures of hardware
Systematic failures of hardware and software
Common cause failures
Environmental influences (e.g. electromagnetic, temperature, etc.)
Supply system voltage disturbances
It is widely applied to safety instrumented systems.
It is aimed primarily at system designers, integrators and users of safety systems
IEC/EN 61511
Electronic Safety-Related Systems
Process
®
IEC/EN 61508-3
IEC/EN 61508
Software
Quantum
Safety of systems and equipment
IEC/EN 62061
™
Machines
Safety-related parts of
control systems
prEN ISO 13849-1
EN 954-1
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