Page 26 - Contractors World - International Vol 3 No 7

One of the keys to both Showa’s high productivity and efficiency has been the cone unit’s automatic setting system,
ASRi, which further optimizes cone crusher efficiency, and automatically adapts the crusher to variations in feed
conditions. By continuously measuring and compensating for crusher liner wear, the system allows for optimal utilization
of crusher liners, and schedule liner replacements to coincide with planned maintenance stops.
The U-440 tracked crushers are currently used in two crushing trains to specifically produce aggregate for concrete
production. The first production unit concentrates on producing a 20-5 mm limestone product, whilst the second
produces both a 20-5 mm and 5-0 mm product from a hard sand stone and andesite. Both crushing trains are reportedly
operating at high throughput, and producing superb product shape. In addition to this, smaller members of the Sandvik
mobile crushing and screening range are used for special size production at various points of the sites.
As aftermarket care is key to Sandvik’s operational ethos, four people were invited from the Showa Corporation to
come to Europe as guests of Peter Delbrant. Initially they undertook service training in England, and then proceeded
to the Svedala factory in Sweden, in order to learn more about the Sandvik heavy range of equipment, as well as to
see heavy units operating in the field. So as to capitalize on the successful trip to Europe, Peter Delbrant recently ran a
further course in Japan.
This has undoubtedly paid off as Mr. Yamanoi has recently placed a third order with Sandvik that not only comprises
of two additional QA440 screens and a US440i crusher, but also two members of the “super-heavy” range of mobiles –
UJ540 jaw and UH640 cone respectively.
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Page 26
Contractors World - InternationaVol 3 No 7
New automation and control
system for crushing and screening
Powerscreen has announced a series of improvements to the
plant controls used in its crushing and screening equipment.
As with most companies, Powerscreen continuously looks
for opportunities to integrate new technology within its
new product development. The latest advancement within
company’s range of crushing and screening equipment is in
automation and control systems, simplifying the interaction
between operator and machine.
I n i t i a l l y l aunched i n 2011 , Powers c reen began
implementing a wide ranging upgrade to its plant
control system to coincide with the redesign of its machines
to be compliant with Tier 4i/Stage IIIB emissions legislation. The upgrade transformed the user interface into a more
streamlined and integrated solution. In earlier iterations, within the mobile cone crusher range, the system had a
multiple controller setup with different interfaces for engine, cone setting, choke control and machine power. With
the latest generation system, all engine and machine functions are controlled and operated on a single, intuitive and
graphically driven Human Machine Interface (HMI) colour display.
The menu interface and display are designed to provide a balanced amount of process detail for any given task;
from tracking the machine to crusher setting to full plant operation. An operator can access more detailed information
through a secondary menu within the setup, diagnostics and alarm settings menu, which can help an operator or service
technician identify and resolve faults.
Within the screening range, the new display provides improved diagnostic capabilities, such as fault log history,
electronic engine information and fault code support, while retaining the industry standard fault icons for shutdown and
derate warnings.
The aligned rollout of these systems with Tier 4i/Stage IIIB compliant Powerscreen machines mean that the 1000
Maxtrak, 1000SR and 1300 Maxtrak cone crushers, as well as some Warrior and H Range screens, that are already
dispatched and in operation include the new plant control. The same models with Tier 3/Stage IIIA engines are planned
to be upgraded soon.
In the USA, Ian Williamson represents a local distributor, Powerscreen Mid Atlantic, and he is certain of the benefits of
the system improvements. “The control system advancements have made life much easier for our customers and service
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