TECHNOLOGY IN ACTION ADVERTORIAL
SICK’s ReLy Safety Relays: “New Tricks” from an Old Friend W
HEN it comes to choosing the right safety relay, identifying the smallest performance improvements
can result in big productivity gains. That’s why SICK has developed its ReLy safety relays to achieve a 10 ms response time with a class-leading, long and durable product lifecycle. In a range of just four products, the SICK ReLy safety
relays meet most needs for monitoring safety functions or safety sensors up to PL e (EN ISO 13849) and SIL3 (IEC 61508), while enabling simpler selection, installation and maintenance. “Safety relays may be an everyday device for
Higher, faster, safer – reliable brakes for a
record-holding elevator T
he region of Wulingyuan in the Zhangjiajie National Park in Central China with its unique rock formations is
one of the UNESCO World Heritage Sites. Visitors are able to marvel at the landscape from the
peak of one of the sandstone needles – reached using the highest outdoor elevator in the world.
Elevator brakes by the global market leader mayr®
power transmission ensure that passengers’ experience of the natural landscape is not troubled by safety issues.
Mayr GmbH + Co. KG 08341/804-0
www.mayr.com
monitoring safety sensors and switches, but identifying the best-performing product for your application can be a time-consuming and laborious process,” explains Seb Strutt SICK UK’s safety specialist. “With such a plethora of different devices on the market, we wanted to rationalise safety relay specification. “SICK’s ReLy safety relays therefore offer some great
“new tricks” from an old friend. Our aim was to achieve true gains in performance and usability while making it easier for engineers to stay with a high-performing range they can rely on, saving their selection time and reducing stock inventories.” The SICK ReLy safety relay more than halves the
response time of comparable safety relays, thereby reducing corresponding safety distances. Even a small reduction in safety distances can result in a significant overall increase in operator productivity on a machine. The addition of a ‘reset-required’ output to the ReLy
relays and on-board diagnostics via an LED status display enables easy maintenance with minimal downtime. The SICK ReLy is also capable of operating for a class-leading number of switching cycles before replacement is needed. The ReLy’s narrow 18mm-wide housing takes up minimal space in the control cabinet, with easy push-in front wiring and a one-click fit-and-release mechanism for simple set-up and quick replacement.
The SICK ReLy OSSD1 is for sensors with OSSD outputs and integrated reset/EDM functions, and so is especially suited to advanced AOPD devices such as scanners and advanced light curtains. The SICK ReLy OSSD2 incudes input and output reset buttons with flashing LEDs for sensors with OSSD outputs but without reset/EDM functions such as simpler light curtain units, sensors and door interlocks.
The ReLy EMSS1 provides an option for mechanical
switches such as emergency stops and door switches, while the ReLy HAND1 is designed specifically for 2- hands-safety protection modules as in EN574.
SICK (UK) Ltd 01727 831121
www.sick.co.uk
PROTECT PSC1: Turning Workplaces into Safer Places T
he PROTECT PSC1 safety controller by Schmersal is compact, has a modular structure and can be used flexibly. The PSC1
makes it possible to project tailor-made safety-related solutions, whether for individual machines or highly complex installations. Furthermore, the PSC1 can make a contribution towards the realisation of Industry 4.0 concepts. The PROTECT PSC1 consists of freely programmable compact
PLCs with IO extension modules for signal processing of mechanical and electronic safety switchgear. The compact controllers can be equipped with a universal communication interface. This enables the selection and implementation of different fieldbus protocols easily using software. The PSC1 therefore only requires one hardware element to create a connection to most common forms of fieldbus systems – which is a significant advantage, particularly considering aspects of cost. The modular structure of the new Schmersal control system
is of interest particularly with regard to Industry 4.0 concepts. The aim here, among other things, is to produce individualised products up to single units cost effectively. To achieve this, modularly assembled systems are often needed in which control functions are distributed on smaller, decentralised units that are networked together. Here, the PSC1 from Schmersal offers the means to configure individual protection systems on a software basis. Furthermore, safe communication between different PSC1 controllers is facilitated via Ethernet SDDC (Safe Device to Device Communication). This simplifies the setup of complex, multi-part installations with networked safety subsystems. Another advantage of PSC1: Owing to the optionally
integrated SD bus gateway, additional non-secure diagnostic signals from connected sensors can be transmitted via a standard bus system to an automation control system. This also allows signals to be evaluated that are relevant for preventing downtimes and increasing plant availability – and this in turn facilitates a rise in efficiency.
Schmersal
swatkins@schmersal.co.uk
www.schmersal.co.uk
CONNECTINGINDUSTRY.COM/AUTOMATION MACHINE SAFETY SUPPLEMENT | MAY 2018 S19
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