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WORLD OF INDUSTRIES 02/2018

WORLD OF INDUSTRIES 02/2018

Dozen analog and digital

Dozen analog and digital signals have to be collected The Mount Coffee Dam, though 160 meters long and having 10 radial gates each 15 meters wide, is by far not the largest of its kind. Nevertheless several dozen analog and digital signals have to be collected across the entire dam over long distances and made available to the control level. “In terms of the complexity, the numerous tasks to be performed in the peripherals and the required level of networking, the dam is With IO-Link you can test each module in advance at the factory and just have to plug them in, which noticeably reduces costs. Berthold Wiesinger, Lead Electrical Engineer, Andritz Hydro, Austria essentially nothing more than a widely distributed industrial system,” emphasizes Bernd Schneider, Industry Manager for Energy at Balluff. As far back as 10 years ago the company, which specializes in industrial and factory automation with products ranging from the simple sensor to linear measurement systems to intelligent RFID solutions, recognized that IO-Link is the right standard for overcoming the communication crisis and wiring clutter between the bus and process levels. IO-Link masters collect up to 20 different signals Two Balluff IO-Link masters are installed in a switch box at each of the 10 radial and 4 inlet gates to collect up to 20 different signals in the field. These signals originate from inductive or mechanical limit switches, sensors for determining the rotation direction of the radial gates, control-, regulating- and shutoff valves, signal lamps and illuminated switches. Two IO-Link masters each are installed at the hydraulic stations for linking the involved sensors and actuators there as well. Without exception all the components in the field are connected using one and the same 3-wire standard cable type and uniform M12 connectors. Where analog signals from a particular sensor cannot be directly processed, a compact Balluff adapter plug converts the analog signal into a noise-immune digital signal. Stub lines from a Balluff IO-Link master carry the data to the control level via Profibus DP. Because the system is redundant the weir is devided in two sections, a maximum of 75 meters of cable are required. Advantages of IO-Link “The benefits become soon evident: because we are using standardized cable and connectors instead of individual wiring, cabling took just half the usual time. With IO-Link you can test each module in advance at the factory and just have to plug them in, which noticeably reduces costs,” as Berthold Wiesinger emphasizes. Wiring mistakes are virtually precluded, while the IO-Link philosophy also saves space and provides a clear overview. Internationally active companies especially appreciate the advantage that IO-Link can be used essentially with any bus system: the complete structure beneath the In terms of the complexity, the numerous tasks to be performed in the peripherals and the required level of networking, the dam is essentially nothing more than a widely distributed industrial system. Bernd Schneider, Industry Manager Energy, Balluff, Germany bus level always remains the same, only the bus nodes need to be adapted for a particular country. The bi-directional communication standard provides greater perspective in other ways as well: IO-Link diagnostics information that enables quick localization for fault and error correction which in turn reduces unnecessary downtimes. “For some reason we had a problem with a sensor hub in the startup phase, but it was easily replaced and reinstalled by a colleague. The hub gets its data then from the IO-Link master, which contains the relevant parameter values. After just a short interruption the system was back up and running,” says Berthold Wiesinger. This is a benefit wherever systems aren’t located close by and a specialized personnel are not available for the majority of the tasks that arise. Thanks to IO-Link remote maintenance all the way down to the process level is possible. In addition to clear diagnostics and targeted actions and action instructions when a fault occurs, preventive maintenance concepts are easy to implement. Berthold Wiesinger even goes a step further: intelligent sensors will continue to improve system availability in AUTOMATION The standardized wiring concept will require one infrastructure for both automation and safety technology up to the highest safety level PLe/SIL3. Mario Ober, Sales Engineer, Balluff Austria 22 WORLD OF INDUSTRIES 2/2018

Balluff IO-Link masters collect the signals at the hydraulic station the future. “Sensors which measure oil temperature and oil moisture, monitor highly stressed motors for temperature and bearing condition and autonomously notify of service intervals will become indispensable to our sector in the future as well.” One infrastructure for automation and safety technology The offering of universally applicable IO-Link products continues to grow. For the user this brings with it further opportunities for optimization in wiring, diagnostics and configuring. “Balluff for example offers an analog hub that can be used among other things for connecting thermocouples and similar devices to a module. Using the new safety concept “Safety over IO-Link“, IO-Link and Profisafe can now be used to directly connect safety auxiliary equip- ment. The advantage: in the future this standardized wiring concept will require just one infrastructure for both automation and safety technology. And with the highest level of safety up to PLe/SIL3“, emphasizes Mario Ober, who had local responsibility on the part of the Austrian Balluff subsidiary. The Mount Coffee Dam in Liberia has again been producing electricity chiefly for the metropolis of Monrovia. For Berthold Wiesinger there is no question that IO-Link will find increasing use both in new construction and reconstruction projects. Especially as facilities continue to age and modern control and electronics concepts will be demanded. Photographs: Balluff www.balluff.com Your Global Automation Partner Properly Connected! Connectivity Solutions That Fit Benefit from morethan 115 000 Turcksolutions for your applications in the Connectivityfield Make use of our extensiverange of cables,junction boxes, field wireables and much more To meet the demands of your application, we will not hesitatetocreatecustomer-specific connectivitysolutions www.turck.com/connect

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