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Actuators offer high load capacity and synchronization feature

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The innovative Thomson Electrak HD range of linear actuators from INMOCO has been extended with higher power capacities, opening up new possibilities in hydraulic-to-electric conversion across a broad spread of applications. These smart electromechanical actuators also incorporate onboard electronics that can eliminate the need for standalone controls, with a synchronisation option that enables the integration of two or more actuators.

With load capacity increased by 50% in the newly extended range, the Electrak HD actuators can now handle loads up to 16kN. The actuators with the highest load rating in the range, the 16kN units, are available with stroke lengths up to 500mm; longer stroke lengths, up to the 1m maximum, can be supplied with up to 10kN load ratings. This enables the actuators to be used in some of the most demanding applications that could previously only have been handled by hydraulic actuators.

In addition, protection to IP69K means the actuators can be used in the most environmentally demanding applications. They are built to withstand dirt, water, fertilisers, acids and oils, and can be used across a broad range of temperatures extending from -40degC to +85degC.

Another new feature is the synchronisation option, with enables machine designers to handle not only heavier loads but also uneven loads. For example, a load that is much heavier at one end than the other could damage a machine and its components if not handled properly, but the synchronisation feature allows two or more Electrak HD units to share and evenly distribute load.

Synchronisation enables designers to advantage of a more stable and potentially quicker lift, without the requirement for additional guides or mechanical linkages. This also means simpler installation, which extends to the wiring of the system as well, since the integrated controls for synchronisation eliminate the need for external sync control.

Electrak HD actuators are built around a high-quality ball screw, the efficiency of which reduces power consumption by up to 20%. This is protected by a hard-anodised aluminium cover tube and a stainless steel extension tube. The modular design of the HD allows all control and feedback options to be built into a single compact housing, which improves controllability, saves space and reduces installation time and total cost. A CAN J1939 bus option can eliminate individual controls and simplifies OEM machine design.

The wide range of optional control features can, in many cases, eliminate the need for external controls. This saves design and installation time, as well as space and cost. It also allows the HD to be customised to the specific needs of demanding heavy-duty applications.

Gerard Bush of INMOCO comments: “Electrak HD actuators can deliver huge benefits over pneumatic and hydraulic mechanisms, including reduced design, installation and operation costs, while improving controllability, safety and productivity. With the increased load capacity and the synchronisation option, the actuators can now handle an even broader range of applications, accelerating the trend towards electric conversion of actuation in the most demanding machinery tasks and mobile on- and off-highway equipment. Replacing hydraulic and pneumatic systems, the Electrak HD actuators are smaller, cleaner and easier to integrate with modern computer-based control systems.”

Türkiye endüstrisine, alana özel, spesifik yayınlar üreten MONETA Tanıtım’ın sektörel dergilerinin editörlüğünü yapmaktayım. Yeni nesil, dinamik yayıncılık anlayışıyla, dijital ve basılı mecralarda içerik geliştirmek için çalışmaktayız.

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Actuator

Flood-Proof submersible actuator helps wastewater treatment

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Emerson today launched its EIM™ Aquanaught, a waterproof submersible electric actuator, designed to meet critical isolation demands on wastewater treatment plants during high water conditions. The actuator can be submerged and still operate under 150 feet of dirty water for seven days, which is three times deeper and 40 percent longer than competing submersible technologies.

The Aquanaught features a robust mechanical design with a waterproof enclosure and hermetically sealed connections that ensure uninterrupted plant operation during flooding conditions. Ideal for gate or valve isolation applications found in wastewater, water, collection systems, hydropower, flood control and desalination plants, the design allows these facilities to remain in control of their isolation needs from a safe remote location even if the actuator becomes submerged for extended periods of time. Waterproof sensors provide an additional level of protection by enabling early diagnostic and preventive maintenance during the flooding event.

According to the Environmental Protection Agency (EPA), the US processes approximately 34 billion gallons of wastewater every day. During events like Hurricanes Sandy, Irma and Harvey, billions of gallons of untreated sewer overflowed into impacted communities, posing significant health and environmental risks to the affected areas. With experts predicting that flooding is expected to worsen as climate change progresses, the need for more reliable actuation technologies becomes critical for these facilities.

“When flood waters begin to overwhelm wastewater treatment facilities, it becomes critical for these plants to keep pace with the changing conditions and continue to operate for the sake of their communities,” said Shimona Verma, senior product marketing manager for actuation technologies at Emerson Automation Solutions. “More facilities are looking to upgrade their infrastructure to ensure they aren’t outmatched by future flood waters, and the EIM Aquanaught is a reliable component that will help their operations stay afloat.”

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SIL-capable actuators protect BASF plant

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SIL-capable AUMA actuators meet the highest safety requirements as part of a safety system for flue gas scrubbers on a BASF incineration plant in Ludwigshafen, Germany. The actuators operate flue gas dampers that protect the GRP scrubbers against excessive temperatures in case of emergency.

To prevent damage to the scrubbing system BASF implemented a protection scheme that, as an overall system, meets the stringent SIL 3 requirements according to IEC 61508. The system includes three flue gas dampers fitted with AUMA electric actuators that are TÜV-certified for use in safety-related systems up to SIL 2/SIL 3 (SIL 3 for redundant system architecture).

The first flue gas damper is installed upstream of the flue gas scrubber. If inadmissibly high temperatures are detected, the actuator closes the damper to stop flue gas entering the scrubber. The other two actuators open dampers that divert the flue gas to an emergency stack. For maximum safety, these dampers are arranged in series in a 2oo2 (two out of two) configuration.

The actuators are controlled by a safety PLC that issues a signal to the ESD (emergency shutdown) input of each actuator whenever there is demand for a safety operation. To ensure maximum system availability an uninterruptible power supply (UPS) provides emergency power for the electric actuators. Each actuator automatically performs a partial valve stroke test (PVST) once a month to ensure that actuators and dampers are working correctly.

For several years now, functional safety and SIL have been a priority for AUMA as one of the world’s leading manufacturers of electric actuators. The company offers an extensive product portfolio covering safety requirements up to SIL 3.

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Actuator

SMC merges its digital pressure switch range in 2018 under the same design

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SMC is building on the success of its ZSE20(F)/ISE20 pressure switch range that features 3-
screen display, 3-step setting mode and selectable delay time function, with the ZSE20(F)#/ISE20# (A, B and C). The extended series will help operators deliver efficiencies in terms of control and time saving.

SMC is kickstarting 2018 by extending its ZSE20(F)/ISE20 digital switch range. The A, B and C variations share the original ZSE20(F)/ISE20’s display, setting, selectable delay time, as well as the lightweight and compact design. All models simplify the visualisation process for operators, while saving time as there are fewer push button operations to perform.

The added variations also match the terms of enclosure, output type and media of the current series:
– A Model-> Current ZSE30(F)/ISE30A-> IP40, NPN/PNP and Analogue output
– B Model-> Current ZSE40(F)/ISE40A-> IP65, NPN/PNP and Analogue output
– C Model-> Current ZSE80(F)/ISE80-> IP65, NPN/PNP and Analogue output, for fluids.
A spokesperson from SMC, the world’s leading expert in pneumatics, said: “Following the
success of our ZSE20(F)/ISE20 pressure switch last year, we have taken the step to extend the range with these latest models. Customers have been particularly impressed with the functionality of design, its ease of use and accuracy of information that is readily available with minimal delay. They have found it both energy efficient and cost effective to operate.”
Further flexibility and advantages of the ZSE20(F)#/ISE20# include the peak and bottom values are maintained, even if the power supply is cut, offering greater control in the process.
Also, being compact and lightweight, the models not only deliver space savings, but due to the weight reduction there are less inert moments when the sensor is mounted in mobile applications such as robotic arms.

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