Electrical Power & Protection


Movidrive for screen filters

August 2019 Electrical Power & Protection

An industrial water filtration specialist that has used gearmotors from SEW-Eurodrive for many years has adopted its Movidrive inverters with CMP servo motors and customisable iPOS software for its latest self-cleaning GraviFilter screen filters. “This is an example of a longstanding client relationship that has progressed from a standard product to the latest automation technology as the client itself develops and transforms its product range,” says SEW-Eurodrive engineer, Dylan Enslin.

The new gravity screen filter has been designed for cost-effectiveness and to reduce its manufacturing complexity. Consisting of sheetmetal that is easy to laser-cut and bend, the quantity of welding needed has also been reduced. In addition, the use of the Movidrive inverter with the CMP servo motor allows for effective repeatable positioning of the spray assembly.

“In terms of our iPOS software, we were able to assist with a customised program to control the machine – from aspects of homing to running to manual functions for maintenance, jogging the machine, and then also a graphic user interface for the client to adjust basic settings via laptop,” Enslin explains.

The advantage of Movidrive is that it essentially replaces the functionality of a PLC, from servo positioning to switching pumps and solenoids on and off. Using the drive for positioning, for example, also does away with the old fashioned crank system, in addition to being able to control extra peripherals.

“We have used SEW-Eurodrive for many years for gearmotors. This is the first time we have done something more advanced and automated. We are very thankful for the programming and all the extra effort with our prototype unit. I do not think there are many suppliers willing to go that extra mile for their clients,” says Superior Filtration technical director, Laurence Sachs.

The latest GraviFilter prototype is being trialled at a citrus processing plant, where fruit pulp is very difficult to filter. “We have received good feedback to date on the performance of the prototype,” Sachs reveals. A latest version with even more improvements is on the cards.

The CMP servo motors are IE4-rated for maximum energy efficiency, and are synchronous compared to the traditional AC motors. “You can also control the ramps, which is something that mechanics with camming and crank arms is quite tricky to get right,” adds Enslin.

Ramps place extra strain on the bearings and the structure itself. Essentially this is a scalable solution, with a longer belt drive that can be added if need be. The prototype has a 10 m3/h capacity, with the largest screening filter manufactured by Superior Filtration producing an impressive 200 m3/h.

For more information contact Jana Klut, SEW-Eurodrive, +27 11 248 7000, jklut@sew.co.za, www.sew-eurodrive.co.za


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Cut the complexity of panel design
September 2019, ElectroMechanica , Electrical Power & Protection
A low-voltage electrical distribution system design to reduce the complexities often associated with panel design is available from leading local supplier ElectroMechanica (EM). Quadro+ from Hager combines ...

Read more...
Complete drive solutions to boost efficiency and cut costs
September 2019, SEW-Eurodrive , Motion Control & Drives
The importance of the sugar industry in KwaZulu-Natal to SEW-Eurodrive as a key growth area for its complete drive solutions was underscored when it exhibited at the Congress of the South African Sugar ...

Read more...
Ultra slim DIN rail power supplies
September 2019, Vepac Electronics , Electrical Power & Protection
XP Power has announced the DSR range of AC-DC DIN rail power supplies approved for industrial control systems and information technology equipment applications. These versatile supplies provide reliable ...

Read more...
Oil dielectric RF termination loads
September 2019, Comtest , Electrical Power & Protection
For maximum process repeatability and consistency, modern plasma applications require precise RF power regulation and control. A key component in ensuring accurate and repeatable RF power delivery to ...

Read more...
Outsmarting the DC switch arc
August 2019, Phoenix Contact , Electrical Power & Protection
Trouble-free switching even of higher DC loads up to 250 VDC and 10 A can be realised by means of selecting a special coupling relay, preferably with blowout magnet.

Read more...
SEW-Eurodrive provides on-site training and service in Africa
August 2019, SEW-Eurodrive , News
A key differentiator for SEW-Eurodrive in Africa is its capability to offer on-site training and service. This not only familiarises clients with the drive automation specialist’s complete range, but ...

Read more...
Feed mill project relies on SEW-Eurodrive
August 2019, SEW-Eurodrive , Motion Control & Drives
SEW-Eurodrive has supplied 120 geared motors to Dalein Agriplan for a customised 100 tph feed mill for a major beef producer in the Free State. This is not only one of the largest single projects undertaken ...

Read more...
Fast payback on steam cogeneration
August 2019, Zest WEG Group , Electrical Power & Protection
Fast payback on steam turbine cogeneration systems makes this power source an attractive option across numerous industries. This is according to Leandro Magro, manager steam turbines at Zest WEG Group, ...

Read more...
Power-factor correction to cut ­energy costs
August 2019, ElectroMechanica , Electrical Power & Protection
Power-factor correction is a mechanism to reduce operating costs associated with electricity consumption. Some of the key advantages here are reduced kVA charges, improved plant efficiency and network ...

Read more...
Battery monitoring for power utilities
August 2019, Comtest , Electrical Power & Protection
Comtest now offers the Midtronics Cellguard ELS+ electrolyte level monitoring system, an innovative solution for power utilities’ critical power reliability. This customer-driven product assures reliable ...

Read more...