03 - GuardLink vs Hardwired Safety Devices

Summary

The video script discusses the Garden Link product's ability to achieve higher safety levels, overcoming the limitations of EN ISO 14119 standards that prevent series-wired devices from reaching the highest levels of machinery safety due to fault masking. It highlights the advantages of using Guard Link for series wiring to eliminate fault masking and achieve PLE (Performance Level 'e'). The script also compares hardwired systems with Guard Link systems, emphasizing the latter's reduced response time and increased efficiency. Benefits include reduced wiring effort, cost savings, and remote control capabilities for lock, unlock, and reset, which streamline machinery access and troubleshooting.

Takeaways

• 🔒 The Garden Link product can achieve a higher level of safety in machinery by addressing recent changes in standards like EN ISO 14119.
• 🚫 The new standards prevent series wiring from achieving the highest levels of machinery safety due to potential fault masking issues.
• 🛠️ Guard Link technology allows for wiring multiple devices in series, eliminating the risk of fault masking and enabling higher diagnostic coverage.
• 🔄 The use of Guard Link can help achieve Performance Level E (PLE) by standardizing the approach, making it easier compared to individually wiring and monitoring each device.
• ⏱️ Response time in safety systems can be significantly impacted by the number of devices wired in series, with each additional device adding to the delay.
• 🔗 A hardwired approach with multiple Guard Series devices in series can lead to a cumulative response time that may be too slow for motion applications.
• 🚀 Implementing a Guard Link system can reduce response time, allowing machines to be back in production faster and stopping them more quickly from a safety perspective.
• 🔌 The reduction in wiring with Guard Link is substantial, making installation easier and more efficient with plug-and-play M12 connectors.
• 💰 There are cost benefits to using Guard Link, particularly in terms of reducing the need for individual wiring and monitoring of each safety device.
• 🔄 Guard Link also supports remote-controlled lock, unlock, and reset functions, facilitating faster machinery access and troubleshooting.

Q & A

What is the main challenge with achieving high levels of machinery safety according to the EN ISO 14119 standard?

The main challenge is the potential for fault masking when wiring multiple safety devices in series, which prevents achieving the required diagnostic coverage for Performance Level 'e' (PL 'e').

How does Guard Link technology address the issue of fault masking in safety systems?

Guard Link technology allows for the wiring of multiple devices in series without the risk of fault masking, enabling the achievement of higher safety levels such as PL 'e'.

What is the Performance Level 'e' (PLE) and why is it significant in safety systems?

Performance Level 'e' (PLE) is the highest level of safety that can be achieved in machinery safety standards. It is significant as it represents the highest level of risk reduction and safety assurance.

Why might a company choose to standardize on a PLE type solution?

A company might choose to standardize on a PLE type solution for ease of implementation, as it simplifies the wiring process and allows for consistent safety levels across different systems.

What is the impact of using a hardwired approach with a sense of guard series on system response time?

Using a hardwired approach with a sense of guard series can significantly increase the system response time due to the cumulative response times of each device in the series.

How does a Guard Link system reduce the response time compared to a hardwired system?

A Guard Link system reduces response time by eliminating the need for each device's individual response time to be considered, resulting in a faster overall system response.

What are the benefits of using M12 connectors in a safety system?

M12 connectors offer plug-and-play functionality, which simplifies installation, reduces wiring effort by 20 to 38 percent, and increases the efficiency of daisy chain implementations.

How does the Guard Link system improve machine productivity from a safety perspective?

The Guard Link system improves machine productivity by reducing the time it takes for a machine to stop and start again from a safety perspective, allowing for faster machine recovery and production.

What is the advantage of remote-controlled lock, unlock, and reset functionality in a safety system?

Remote-controlled lock, unlock, and reset functionality allows for faster machine access and shorter troubleshooting times, enhancing overall system efficiency and safety.

Why is the reduction in wiring effort significant in the context of safety systems?

The reduction in wiring effort is significant as it not only simplifies the installation process but also minimizes potential points of failure, leading to a more reliable and safer system.

How does the Guard Link system compare to a traditional hardwired system in terms of installation and maintenance?

The Guard Link system simplifies installation and maintenance due to its plug-and-play connectors and reduced wiring requirements, leading to lower costs and improved efficiency compared to traditional hardwired systems.

Outlines

00:00

🔌 Wiring for Enhanced Machine Safety

This paragraph discusses the challenges in achieving high levels of machinery safety due to recent changes in standards like EN ISO 14119. The new standards prevent series wiring from achieving the highest levels of safety due to potential fault masking. The solution proposed is using Guard Link, which allows for wiring multiple devices in series without fault masking, thus achieving the necessary diagnostic coverage for PLE (Performance Level E). The paragraph also highlights the benefits of PLE in terms of standardization and the advantages of using Guard Link, such as reduced wiring, faster response times, and increased efficiency in daisy chain implementations. The comparison between a hardwired system and a Guard Link system shows significant improvements in response time and installation efficiency.

Keywords

💡Safety

Safety in the context of this video refers to the measures taken to protect people and machinery from harm. The video discusses how the Garden Link product can help achieve a higher level of safety by adhering to standards like EN ISO 14119. The theme revolves around machinery safety, emphasizing the importance of preventing accidents and ensuring the well-being of both operators and equipment.

💡EN ISO 14119

EN ISO 14119 is a standard that sets guidelines for the safety of machinery. The video mentions that recent changes in this standard have affected the ability to achieve the highest levels of machinery safety due to the potential for fault masking. This is crucial as it directly impacts the design and implementation of safety systems in machinery.

💡Fault Masking

Fault masking is a situation where a fault in one component is hidden or masked by another, leading to a false sense of safety. In the video, it is mentioned as a reason why wiring multiple devices in series can prevent achieving the highest levels of safety as per the EN ISO 14119 standard. This concept is critical in understanding the limitations of traditional safety systems.

💡Guard Link

Guard Link is a product mentioned in the video that allows for the wiring of multiple devices in series, thus eliminating the possibility of fault masking. It is highlighted as a solution that helps achieve higher safety levels by ensuring diagnostic coverage, which is essential for meeting the requirements of machinery safety standards.

💡PLE (Performance Level)

Performance Level (PLE) is a term used in the video to describe a level of safety performance that a system must achieve. The video discusses how using Guard Link can help achieve PLE by allowing for the wiring of multiple safety devices in series, which is not possible with traditional hardwired systems due to fault masking issues.

💡Response Time

Response time in the video refers to the time it takes for a safety system to react to a hazard. It is mentioned that a hardwired approach with multiple devices can result in a slower response time, which can be critical in motion applications. The video contrasts this with a Guard Link system, which significantly reduces response time, thereby enhancing safety.

💡Hardwired Approach

A hardwired approach is a traditional method of connecting safety devices directly to a control system. The video uses this term to describe a system where multiple devices are wired in series back to a safety relay, which can lead to increased response time and complexity in the system.

💡Daisy Chaining

Daisy chaining is a method of connecting devices in a chain-like fashion, where each device is connected to the next. The video mentions that this method can increase efficiency and reduce wiring effort, making it a preferred approach in many systems. It is used to illustrate how Guard Link can simplify the wiring process.

💡M12 Connector

M12 connectors are a type of electrical connector often used in industrial applications. The video highlights that the use of M12 connectors in Guard Link systems makes the installation process plug-and-play, reducing wiring effort by 20 to 38 percent. This is an example of how technology can simplify safety system installation.

💡Remote Control

Remote control in the context of the video refers to the ability to control machinery from a distance, particularly in terms of safety functions like lock, unlock, and reset. The video mentions this as an advantage of using Guard Link, allowing for faster access and troubleshooting of machinery.

💡Troubleshooting

Troubleshooting is the process of identifying and resolving issues in a system. The video discusses how the use of Guard Link can simplify troubleshooting by reducing the complexity of wiring and allowing for remote control functions, which can speed up the process of identifying and fixing safety issues.

Highlights

Garden link product can achieve higher levels of safety by adhering to recent changes in standards such as EN ISO 14119.

Series wiring is prevented from achieving the highest levels of machinery safety due to potential fault masking issues.

Diagnostic coverage necessary for PLE (Performance Level E) cannot be achieved with multiple devices wired in series.

Guard link technology eliminates fault masking, allowing for multiple devices to be wired in series without compromising safety.

PLE type solutions are sought by customers for standardization, simplifying the wiring process.

Standardization with PLE reduces the need for independent wiring and monitoring of each device.

A hardwired approach with Sense Guard series can lead to increased response times due to the sequential nature of the devices.

The system response time in a hardwired setup can be significantly longer, impacting motion type applications.

Guard link systems reduce response time, allowing machines to resume production faster after a safety stop.

Reduction in wiring effort is substantial with Guard link, using M12 connectors for plug-and-play ease.

Wiring efficiency is increased with daisy chain implementation, which is common in many OMS.

Cost savings are achieved through daisy chaining devices, reducing the need for extensive wiring.

Remote-controlled lock, unlock, and reset features facilitate fast machinery access and shorten troubleshooting times.

The plug-and-play nature of Guard link systems can reduce installation time by 20 to 38 percent.

The efficiency of the system is greatly enhanced with the use of Guard link technology in safety applications.

The implementation of Guard link technology is a significant advancement in machinery safety and efficiency.

Transcripts

we talked about wiring being able to

achieve a higher level of safety with

the garden link product some of the

recent changes in the standards the en

iso 14 one-one-nine has prevented series

wearing from achieving the highest

levels of machinery safety because of

the potential for fault masking the

issue with this is basically you cannot

achieve the diagnostic coverage needed

to get to ple so basically if I have

multiple door switches multiple e-stops

wired in series a ple circuits not

possible according to this standard so

if you take advantage of guard link you

can still achieve that by wiring

multiple devices in series because you

eliminate the possibility of fault

masking between multiple doors in series

or multiple devices in series one other

thing talking about the ple we've seen a

lot of customers that are trying to go

to the ple type solution just from a

standardization standpoint again that

makes it possible to achieve that very

easy versus having to wire each device

back independently monitoring each

device and things of that nature to get

to some of the other kind of advantages

from a system standpoint this is an

example of two different systems the

system on the Left would have been using

a hardwired approach with our sense of

guard series basically having $0.10 a

guard series in series back to your

safety relay so what happens with that

is from a response time standpoint we

have to look at each one of those

devices what the natural device is I had

a fifty-four millisecond response time

and then for each additional one it

stacks on top of that so that made our

total system response time like 234

milliseconds which can be a long time in

a motion type application so you can see

over on the right basically we took a

guard link system set up the same type

of system

it's reminisce Lee reduced that response

time so again that's faster machine can

be put back in production faster it can

stop from a safety perspective so that

can be pretty big depending on your

system

and we talked a little bit about it but

the reduction in wiring is huge from a

installation standpoint just because

everything is an m12 connector it's all

plug-and-play reduce the wiring effort

of twenty to thirty eight percent also

increased efficiency of the daisy chain

implementation we commonly see that from

a lot of OMS there's daisy chaining

devices from a cost standpoint the and

then you have the remote-controlled lock

and unlock and reset fast machinery

access and shorten troubleshooting