PLCS IS, I, NDUSTR L P S & H Usi g spare, standard I
y using the spare,, standard II/O channells within ABB’s AC500 programmable logic controller (PLC), the functional safety of
y using the spare standard O channe thin ABB’s AC500 program able l gi
controller (PLC), the functional safety of chine applications can be cost-effectively enhanced, says a new report fromABB. Using the PLC, together with ABB’s AC500-S safety CPU, incurs no extra control systemcosts by avoiding additional safety I O m dules or an crease i
the PLC, together w th ABB’s AC500-S safety CPU, incurs no extra control system costs by avoiding additional safety I/O modules or an increase in cabinet dimensions.
cabinet di ensions.
Entitled ‘Usage of AC500 Digital Standard I/Os in Functional Safety Applications up to PL c (ISO 13849-1)’, the report shows how the concept benefits m chine bui
Entitled ‘Usage of AC500 Digital Standard Os i
h have not embraced these standards. Machine builders in these regions can now readily increase safety of machines without sig ifica t investment, o enin th opportunity to export
always conformto either functional safety standards, ISO 13849-1 or IEC 62061. This includes those operating in some countries which have not embraced these standards. chine b ilders in these regio s can
som countri
readily increase safety of m chines without significant investment, opening the opportunity to export
Various crane types, industrial elevators and woodworking mac nes of n operate at east d
Various crane types, industrial elevators and woodworking machines often operate at the lleast demandiing safety integrity level (SIL); SIL 1 for those working to comply with IEC 62061 or performance level (PL) PL c for those conformng to ISO 13849-1.
n safety integ ity level (SIL);
SIL 1 for those w rking to com ly w th IEC 62061 or performance level (PL) PL c for those conforming to ISO 13849-1.
PLCs, such as ABB’s AC500-S, that are typical y used i
PLCs, such as ABB’s AC500-S, that are
typically used in these applications, have up to 32 digital standard I/O channels, yet often not al are used. Functional safety i enhanced by adding a safety CPU, to the standardm dule, and dynamcal testing the spare I/O chan
32 digital standard I O channels, yet often not all are used. Functional safety is instantly enhanced by adding a safety CPU, in addition to the standard module, and dynamically testing the spare I/O channells. This can save up to 30 per cent of the cost of buiup to 30 per cent of the cost of building ing i safety from the outset. The safety CPU is used for safety l gic processing and diagnosti easures for digital standard I Om dules. “Digital safety in
stantl addition s. T is can save
safety fromthe outset. The safety CPU i used for safety logic processing and diagnostic measures for digital standard I/O modules. “Digital safety input channells shoulld always be used even for functional safety
t chan s sh d alw ys
be used even for functional safety appl ations up to PL c (ISO 13849-1), ABB’s product manager, Yauheni Veryha. “However, using digital standard I O channel s still a
says la tio if they are a tu ly a
applications up to PL c (ISO 13849-1),” says ABB’s product manager, Yauheni Veryha. “However, using digital standard I/O channels iis still an option if they are actually avaiilable and their reuse for functional safety functions up to PL c is needed to satisfy specific customer requirements.
and their reuse for functional safety functions up to PL c is needed to satisfy specific customer requirements.”
ABB’s report goes on to prove the concept of usi g digital standard I O i
safety appl ations and describes the methodology of proof. The results of its safety analysis confirm that the AC500 digital standard I O channels can be used i
ABB’s report goes on to prove the concept of using digital standard I/O in functional safety applications and describes the ethodology of proof. The results of i
functional
safety analysis confirmthat the A 500 digital standard I/O channels can be used in
functional safety applications up to PL c (ISO 13849-1). H
ver, the implementation, ca io specific. T is is
functional safety appl ations up to PL c (ISO 13849-1). However, the implementation, verification and validation of the approach in practice according to ISO 13849-1 and/or I 1, rem ins a
verification and val dation of the approach i practice according to ISO 13849-1 and/or IEC 62061, remains appliication specific. This is because standard (non-safety) AC500
modules become involved in the execution of functional safety functions.
because standard (non-safety) AC500 dules become i vol ed i functional safety functions.
ABB www. www the executi n of
ww.abb.com/PLm/PLC /AUTOMATION AT /AUTOMATION AU AUTOMA MAT ATION | MARCH 201 RCH 2017 23 23 See us on # Q40 See us on # Q40 Connect. Monitor
Connect. Monitor. Control. I
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and networking pr
• Connect: Extend equipment lifespan with protocol conversion Monitor: Improve process visibility with visual management Control: Push control to the edge with remote monitoring Network: Expand network reliability with industrial Ether
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Red Lion has been connecting devices and moving data for years, enabling customers to easily advance to the Industrial net of Things (IIoT). Our IIoT
these appl ations, have up to
c (ISO 13849-1)’ the report shows how the concept benefits machine builders that do not always conform to either functional safety standards, ISO 13849-1 or IEC 62061. This cludes those operating i
ers that do not Functional Safety Appl ations up to PL
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safety whi e reducing costs and footpri B
Using spare, standard I/O enhances funct onal enhances functiional safety while reducing costs and footprint Cranes, inranes, industrial elevators anstrial elevators and woodwork nrkiing mach nes, as
chiines, as
machine applications can be cost-effectively well as those countries not using international standards, can enhanced, says a new report from ABB. Using improve functional safety by capitalising on unused, standard
ll as those countries not using international standards, can improve functional safety by capitali ng on unused, standard I/O channels, according to a new report from ABB
I/O channels, according to a new report from ABB
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