TECHNOLOGY REPORT | ANTI-SWAY/COLLISION AVOIDANCE
CRANEDGE INDIA ‘MODIFICATIONS & UPGRADES’
Cranedge India says it has seen a rise in requests for modernising machinery to save costs. It discussed this topic in a webinar series have turned towards enhancing their existing cranes for their material handling needs,” a Cranedge India spokesman said. The picture (right) shows the hoisting machinery of a crane, which
was upgraded to a higher capacity with a combination of new and existing components.
decade by delivering value added services and guiding customers in win,” the company added.
equipment such as Simatic S7 PLCs, Simatic HMI Panels, and Scalance W Industrial Wireless Modules. Unique algorithms within PaR’s software enables crane operators to more easily, quickly, and safely control the movements of payloads, such as dies and coils in automotive stamping plants, it is most effective for applications that require high throughput, and precise manipulation of loads to meet production demands and prevent collisions with sensitive equipment and personnel. EO anti-sway technology has been in use since 2011 in hundreds of applications worldwide. Users claim it can control crane loads with 95% less sway and 90% fewer
“close calls” or collisions by intercepting pendent or radio-pendent commands. “The primary advantage of using
ExpertOperator anti-sway technology is that it allows novice and expert crane operators to reduce payload swing by 85-95% while positioning efficiency is increased and collisions and near misses are significantly reduced,” says Miles Close, director, Product Management, PaR Systems. “It is a sensorless technology that does
not require the use of any sensors (hoist encoder, load sensor) or operator inputs to implement. The technology automatically compensates for sway at any hook height, payload, rigging configuration and
auxiliary hook applications. It has proven to be reliable technology especially for demanding 24/7 production environments in primary metal and automotive die stamping applications.” During trials six different load movement scenarios were captured on video and analysed to quantify the effectiveness of EO at suppressing load swing, with results determining it is capable of reducing load swing by approximately 90%. When EO was disabled, the average load swing exhibited by all the cranes was approximately 3.5 feet. Whereas, when EO was enabled, the average load swing was 3.3 inches. Many of PaR’s customers run 24x7
operations and have reported significant improvements in productivity. For example, one customer in a high-throughput locomotive manufacturing process reported that the critical path load positioning time was reduced from approximately four minutes to less than two minutes. This result is not atypical. End users who implement EO generally report between 10% and 50% reduction in load positioning time. Each time a crane operator pushes a
R PaR Systems EO suppresses load swing.
button, electric current rushes through the power section of the drives. The current also flows into the motors, and this causes torque to be propagated in the mechanical drive train through to the gears, wheels, and finally the rails of the crane’s infrastructure. When the number of starts, stops and surges in current are reduced by 60%-80% with ExpertOperator, then the life of that critical equipment is prolonged. As a result, the mean time between failure (MTBF) statistics is improved by a factor of 2-3 times and maintenance costs are reduced ●
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