hydraulic

Hydraulics Meets Internet of Things: Avoiding Machine Downtime the Intelligent Way

Guest Contributor: Luisa Franz, Bosch Rexroth

 

IoT-capable hydraulic power unit ensures efficient production

With the newly developed, intelligent CytroBox unit, Rexroth combines the benefits of hydraulics with low energy consumption and software-based functions. The integrated CytroConnect IoT service ensures higher availability and avoids unplanned downtimes. With this IoT service, operators can monitor operating statuses and plan maintenance in a cost-effective manner. As a result, fluid technology has taken a further step towards the factory of the future.

The digitalization of mechanical and plant engineering means more than decentralized intelligence, integrated sensors and connectivity. This applies to hydraulics too. With its power density and immunity to impacts and vibrations, hydraulics plays a central role as an important drive technology in Industry 4.0 too. The compact CytroBox unit is revolutionizing hydraulic pressure supply. CytroBox is a modular hydraulic power unit for the medium performance range from 7.5 kW to 30 kW. It comprises optimally tailored, impressively compact components. Compared to previous units, considerable amounts of space can be saved.

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75% less oil

One of CytroBox’s unique selling points is it compactness. This is possible because the hydraulic power unit can be integrated into a factory like a control cabinet, i.e. upright. The tank no longer supports all other components – Rexroth developed a special supporting structure for this purpose. In addition, a degassing flow-optimized tank is used. On the basis of extensive CFD simulations, the developers improved the tank geometry so skillfully that the new unit needs only a quarter of the oil required by classic designs: instead of 600 liters, 150 liters are now enough – with at least the same service life. The drive unit – a component which usually takes up a large amount of space in hydraulic power units – is equally compact. The asynchronous servo motor has been replaced by a synchronous servo motor. This is the most efficient motor design, producing the same torque even though it is 80 to 90% smaller. The manifold too was redesigned: thanks to 3D printed sand cores, the block including the internal flow geometry is now cast. As a result of this flow-optimized inner structure, less material and space are required. Thanks to all these measures, the CytroBox has a footprint of just 0.5 square meters instead of one and a half to two square meters. This represents a saving of up to 75%. On top of this, there are energy savings of up to 80% as well as a 10 dB(A) reduction in noise emissions. As a result, noise emissions are lower than 75 dB(A).

Connected for the factory of the future

In the CytroBox, machine manufacturers will find a ready-configured drive controller with numerous integrated functions. Various sensors provide information on the current filter, oil or drive status. The collected sensor data are bundled via IO-LinkMaster and pre-processed by the drive controller so that they can be integrated flexibly into modern machine designs. This means that the CytroBox is IoT-ready.

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CytroConnect Monitor

With the CytroConnect digital service, operators have all information regarding the CytroBox at their fingertips at all times – whether it be information regarding the standardized visualization of the component and operating status or chargeable IoT services such as forthcoming maintenance work and predictive maintenance analyses using Rexroth’s Online Diagnostics Network (ODiN).

The data collected are transferred to the browser-based CytroConnect Monitor web dashboard via Multi-Ethernet or 4G-LTE. As a result, operators can be kept up to date regarding the current operating status and key status indicators on any end device (tablet, smartphone, PC). This plug and play service is free of charge and can be used without additional installation work. CytroConnect is implemented in the CytroBox as standard.

Greater availability thanks to additional analysis functions

In addition to the CytroBox’s automatic status monitoring, maintenance personnel and maintenance managers can add extra solutions for various applications as add-ons. These pay-per-use payment models include additional IoT analysis tools and can be subscribed to on a monthly basis.

For optimizing maintenance processes, the CytroConnect Maintain module offers access to historical sensor data as well as messages if maintenance is required or in the event of critical operating statuses. Pre-defined and custom rules allow customers to improve their maintenance strategy on an ongoing basis. Customers benefit from scalable software solutions from the Bosch IoT portfolio such as the Nexeed Production Performance Manager and the integrated know-how of the Rexroth domain specialists. The Nexeed Production Performance Manager is a condition monitoring software solution for systematic production optimization.

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CytroConnect Maintain

With CytroConnect Maintain, data concerning the most important components for reliability and operating life (the hydraulic oil and the drive unit) are assessed. Comprehensive insights into the correlation between the speed of the servo motor and the flow allow the monitoring of system leakage, while correlations between motor data and the operating pressure allow conclusions regarding drive behavior. The leakage sensor, temperature and level sensor, particle sensor, water sensor and oxygen sensor are additional data sources which can be used to make a status diagnosis.

Planning predictive maintenance efficiently

A further add-on, CytroConnect Predict, uses the machine learning algorithms of the Rexroth Online Diagnostics Network (ODiN) for a predictive analysis of the system. With this IoT service, the power curves for a wide range of components are recorded for data analysis purposes. In the event of deviations, the system automatically calculates the expected remaining operating life of the relevant component and informs the operator immediately via a push message. As a result, predictive maintenance application cases can be taken into account predictively in the operator’s maintenance plans, thus ensuring maximum availability.

Conclusion

This new form of hydraulics is energy-efficient, quiet, space-saving and intelligent. With the integrated CytroConnect IoT service, the CytroBox offers anything from transparent, efficient machine monitoring to intelligent predictive maintenance measures. Thanks to the CytroBox, fluid technology is now one step closer to the factory of the future.

www.cytroconnect.com

www.boschrexroth.com/cytro

 

cropped-cmafh-logo-with-tagline-caps.pngCMA/Flodyne/Hydradyne is an authorized Bosch Rexroth distributor in Illinois, Wisconsin, Iowa and Northern Indiana.

In addition to distribution, we design and fabricate complete engineered systems, including hydraulic power units, electrical control panels, pneumatic panels & aluminum framing. Our advanced components and system solutions are found in a wide variety of industrial applications such as wind energy, solar energy, process control and more.

TIME IS MONEY: ENGINEERING FOR LARGE POWER UNITS REDUCED TO FIVE DAYS

Time and cost savings through standardization and proven designs

Faster, simpler, more productive and cost-effective: Rexroth’s new modular system called ABMAXX speeds up the engineering and commissioning of large hydraulic power units in projects designed to modernize existing systems or construct new ones. The hydraulics specialists are able to create a quote complete with a hydraulic circuit diagram, a parts list, a 3D model and dimensions all within a maximum of five working days. As such, system manufacturers and end users can reduce engineering lead times alone by 80 %. The pre-configured ABMAXX modules are composed of highly available standard components. The modular approach reduces costs by up to 35 % and increases operational availability.

When constructing new or modernizing existing steelworks and rolling mills, large-scale presses and test systems or the central media supply of factories, hydraulics is and will continue to be the key drive technology both now and in the future on account of its high power density, robustness and durability. Thanks to the wide range of components available, there is plenty of scope for designing tailored solutions. In the past, system manufacturers and major end users defined their own standards which they implemented with their own resources in development. In light of ever increasing cost pressure and a global shortage of qualified specialists, these days they are increasingly scrutinizing that approach. Their main goal is to achieve pressure and quantity as cost-effectively as possible.

This is where Bosch Rexroth’s modular system ABMAXX comes in. The company is the first hydraulics manufacturer to come up with a modular solution with which system manufacturers and end users can significantly reduce the complexity of engineering large power units for 24/7 operations. On the one hand, it enables them to take advantage of all the economic benefits of cross-manufacturer standardization yet, on the other hand, the modular design provides ample opportunity for coming up with application-specific solutions.

Three pressure ratings and five modules

The concept initially covers tank sizes ranging from 2,000 to 12,500 l. With its three pressure ratings, namely 160, 210 and 315 bar, the concept satisfies the trend for higher operating pressures, thus ensuring it will be fit for the future. Achievable flows currently range from 345 l/min to 2,160 l/min. These basic conditions meet the typical requirements of numerous large plants.

In order to transform the benefits of standardization into shorter project lead times, Rexroth has defined five modules: tank, pump block, circulation unit, cooling and filter unit, and safety controls. Each module is based on proven constructions with a tried-and-tested design. As such, Rexroth is able to considerably reduce the risk of initial errors in the construction.

Simplify the design – Up to 80 % time savings in engineering: Offer in a maximum of five working days

The benefits of standardization and modularization are clear to see at the project planning phase. These days, depending on the level of complexity involved, planning customized individual power units in line with relevant company standards can take four to eight weeks. Rexroth is able to whittle this phase down to a maximum of five working days with its modular system ABMAXX. Rexroth is able to provide 3D models complete with dimensions and parts lists as well as the hydraulic circuit diagram and a quote all based on the customer’s specifications within just one week. This shortens the engineering effort by up to 80 %. This enables designers to save valuable time, which they can use on their projects, and enables system manufacturers to shorten the quote phase.

Streamline the installation – Up to 35 % lower costs through standardization

In comparison to using completely newly designed large power units each time, system manufacturers and end users achieve between up to 35 % direct cost savings on account of modularization and standardization. Internal costs are also reduced thanks to shorter project lead times and shorter time to market for system manufacturers. End users can also use individual ABMAXX modules such as the pump block in order to modernize their systems step by step and improve energy efficiency, for example. The wide range of Sytronix variable-speed pump drives is also able to unlock considerable potential here for reducing power consumption based on demand. Tried-and-tested safety controls help designers to comply with corresponding safety regulations and documentation requirements in line with standards. The choice of standard components also reduces delivery times and cuts costs.

Through its global production network, Rexroth also ensures high local added value and a quick response to customer requirements. Competence centers for power units construction in Europe, Asia and the Americas cover all major regions with short distances.

Maximize the productivity – Latest technology for maximum efficiency

At ABMAXX, Rexroth uses latest technology for all components and the hydraulic design. The components set standards in terms of dynamics and life time. Proven design principles increase productivity through high repeat accuracy and energy efficiency. The wide range of variable-speed pump drives in the Sytronix family opens up considerable potential for reducing energy consumption as required. This reduces life cycle costs sustainably.

With the three pressure stages up to 315 bar, the concept meets the current state of the art, but already reflects the trend towards higher working pressures.

Minimize the downtime – User and maintenance friendliness increases availability

The modules have been designed so as to ensure optimum component accessibility. What’s more, standardization reduces the required maintenance and servicing over the entire life cycle as the standard components used are available at short notice and will be part of the product range over the long term. The modules are composed of highly available Rexroth standard components. They are designed to deal with harsh environmental conditions including humidity, heat, dust, contamination and vibration.

The components are designed to work equally well with mineral oil as with water-based media such as (HFC) and synthetic water-free fluids (HFD). As such, Rexroth’s axial piston pumps achieve the same service life regardless of the media involved.

The pump block and the circulation unit are fundamentally equipped with stand-by units in order to guarantee maximum availability.  The pump block and the circulation unit are always equipped with stand-by units for uninterrupted 24/7 operation.

First power units already in use

Bosch Rexroth has already made several ABMAXX as complete power units and individual modules for modernization projects. System manufacturers for metallurgical plants and operators of steelworks and rolling mills are among the first users. However, potential applications exist across all sectors of industry as well as in large-scale projects.

 

cropped-cmafh-logo-with-tagline-caps.pngCMA/Flodyne/Hydradyne is an authorized Bosch Rexroth distributor in Illinois, Wisconsin, Iowa and Northern Indiana.

In addition to distribution, we design and fabricate complete engineered systems, including hydraulic power units, electrical control panels, pneumatic panels & aluminum framing. Our advanced components and system solutions are found in a wide variety of industrial applications such as wind energy, solar energy, process control and more.