Tag: RELAYS

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Safety and Control Tasks

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The railway technology specialist Schweizer Electronic AG offers innovative solutions to safeguard construction sites, level crossings, and radio remote control systems for locomotives. For the remote control of a freight train locomotive from Bombardier the automation system PSS 4000-R(ail), acts as an interface between receiver and locomotive control system, checking the signals for feasibility and consistency, and ensuring the required safety in accordance with SIL3. http://www.pilz.com

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Rapid-reaction safety

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SRW opted for a barrier-free safety solution from Pilz in two different plants: Light curtains PSENopt II safeguard the process on a cartoner filling station, which erects cartons fed in via conveyor technology and then has a robot stack them in transport containers. They enable flexible loading and unloading, without disrupting the production process. PSENopt II are also used on an assembly cell where components are first placed in position and then pressed into a printed board. Here they ensure that hazards caused by the integrated 6-axis robot, the servo press and/or the moveable round table are excluded. http://www.pilz.com

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More flexibility for control and operation

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So when developing the case erector Tablomat LE a new, sustainable automation and safety concept was included. The requirement was for diagnostic data from the sensors to be available to the machine controller in real-time so that the plant operator can retain a complete overview of the machine status. There are four safety gates on the machine and each use the non-contact safety gate system PSENslock. It performs the safe position monitoring and process guarding. The safety controller PNOZmulti 2 monitors the safety gates and the installed E-STOP pushbutton and guarantees the exchange of diagnostic data via fieldbus module with the PLC. With this efficient solution, fast format changes and fast, simple adaptation of sensor and actuator technology can easily be implemented. http://www.pilz.com

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Safety and automation

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In particular, PSS 4000 ensures safe control and communication between the overall system and the subsystems, such as the drive controller, remote monitoring system or visualisation.
The automation system is programmed and set up using the software PAS4000. Special deactivation concepts are also part of the solution. “Deactivation concepts are measures that continue to guarantee operation if individual subsystems should fail” says Hansruedi Schleiss, Frey AG Stans. The decisive factor for choosing this solution from Pilz was that the automation system PSS 4000 can control both safety and automation functions. This means that differentiation is no longer necessary between these two functions. http://www.pilz.com

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Avoiding risks during bottle filling

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There are many individual steps behind the bottling of mineral water, and therefore many plant components, from the blow-moulding/filler block that blow-moulds, fills and seals PET bottles, a complex design of conveyors conveys bottles to control and labelling stations and finally to the packaging machines and palletisers.

There are many individual steps behind the bottling of mineral water, and therefore many plant components, from the blow-moulding/filler block that blow-moulds, fills and seals PET bottles, a complex design of conveyors conveys bottles to control and labelling stations and finally to the packaging machines and palletisers. http://www.pilz.com

Risk assessment for packaging machines

To determine which risks are possible when operating the plant and which protective measures are necessary, ACMI, manufacturer of complete end-of-line systems and packaging machinery, consulted with its long-standing partner Pilz. monitoring of the safety functions is performed by the configurable small controller PNOZmulti 2 that communicates with the plant automation system via Profinet. Coded, non-contact safety switches PSENcode prevent manipulation and ensure that the minimum distance is maintained.

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Safety gate solution

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A mounting position had changed, suddenly rendering the existing safety concept for the horizontal animal feed mixer ineffective and potentially preventing the plant being delivered on time. Herbst worked closely with Pilz to develop an alternative, which would safeguard the flaps on the stirrer: an appropriate solution was quickly found with the safety gate system PSENmlock, which combines safe guard locking and safe interlocking in one device. http://www.pilz.com

The flexibly mounted mechanical actuator on this safety gate system ensures a high tolerance compensation, even with sagging gates. What’s more, the closing tolerance of the secure safety gate system was increased by another 10 millimetres over a mechanical system. So now there is no longer an injury risk from an overrunning stirrer, should the service and cleaning flaps be opened too early. The horizontal mixer arrived at the customer just in time.

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Safe rail operation via remote control

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Intelis IED has specialised in the automation of control and safety tasks in rail transport and, in close collaboration with Pilz, has integrated the remote controller INIS-TC on the Montreux Oberland Bernois (MOB) railway line. The remote controller is based on the automation system PSS 4000-R and ensures safe, economical rail operation over the 75 km long stretch. At 17 stations, an integrated interface connects PSS 4000-R to the respective signal box. http://www.pilz.com

The control units PSSuniversal send sensor data from axle counters to the communication server and safety controllers in real time. The new module INIS-PN supplements the safe control and monitoring solution: in the stations at Zweisimmen and Château-d‘Oex, the whole shunting operation can now be controlled remotely from the respective signal box. Dispatchers refer to their screen to see the position and status of points and signals as well as the location of locomotives and trains. They therefore have all sections of the track in their sight and travellers on the MOB arrive at their destination safely and on time.

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Stress-free test conditions for new trains

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For the technical development of the test cages Bombardier works with SPIE, a technical service provider for buildings, plants and infrastructures. While SPIE implemented the plant’s mechanics and electronics, the partners turned to Pilz’s expertise with regard to safety issues: Pilz carried out all the calculations, programming, validation and concept development. Safe, functioning operation of the test facility is the result. http://www.pilz.com

In detail, the automation system PSS 4000 controls not only the emergency stop and the coded safety switch PSENcode but also all the safety-related inputs and outputs. PSENcode monitors the doors to the test cage to prevent unauthorised opening. What”s more, as soon as an emergency stop is triggered, power is removed from the entire cage. Staff at the control panel can perform rapid diagnostics for these safety functions. The result is an efficient test operation with low plant downtimes.

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Faster analysis equals shorter downtimes

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The manufacture of snack products requires a multi-part, interlinked production cycle. Previously the plant sections were regarded as individual units with separate emergency shutdown circuits. That made troubleshooting time-intensive and meant a large part of production was stopped. http://www.pilz.com

Pilz developed a concept to optimise these processes. Now that the configurable small controller PNOZmulti 2 is used, faults can be located directly on the display and can be rectified immediately. All safety functions are easy to configure via the PNOZmulti Configurator. Today, in the event of a malfunction, only individual production sections are stopped; the rest of production can continue running efficiently. With these adjustments Poco Loco was able to safeguard production efficiently: downtimes have been significantly reduced.

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Generic controller for various types of points

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Malfunctions can arise quickly if points are set incorrectly. So it was all the more important to the operators of the Dolderbahn and Rigi Bahnen AG that the points controller be upgraded to the state of the art and comply with the applicable CENELEC standards. There are eight points in total, made up of three different types, which had previously been controlled differently; that proved a challenge. VT AG and Pilz worked together to develop a generic solution: The automation system PSS 4000-R with the corresponding I/O modules, located in the control box alongside the tracks, is now used for centralised control and monitoring of the points. The advantage of this generic control solution is that it only needs to be certified once and in future can be transferred to other types of points. In this way the innovative retrofit ensures that operational processes run smoothly. http://www.pilz.com