Page 60 - Energize November 2021

TECHNICAL

Figure 2: USS Kennedy aircraft carrier

electrical power and control package reliable crane. It also provided a data historian for the crane’s operations which can track
on the 315-metric ton crane. Nidec alarms for multiple years.
also achieved the goal of synchronous The HMI system can display real time trending of analogue data for all relevant
operation and multiple tiers of functions and store it in historical trending for a period of 30 days. This allows analogue
redundancy. data to be viewed at a later date.
Nidec has a 15-year development
relationship with Huntington Ingalls. Result
The company worked with Huntington Load testing was successful. The crane runs at a higher speed than the previous crane
Ingalls’ teams to develop the system and performs very accurate synchronised operations. The redundancy in drive systems
required for operation of this crane. enhances the reliability of the crane. Nidec custom software, specially designed for
An example is the design of the control Huntington Ingalls, allows the operator to control the load very accurately and move it
system so that the crane operator can safely at all times.
customise what the joy sticks control.
By using the touchscreen, the operator About Nidec
can make the joysticks run any of the Nidec Control Techniques designs and manufactures electric motor control technology for
hoists or run any combination of hoists industry. The portfolio includes AC, DC and servo variable speed drives as well as power
together. conversion technologies. Founded in 1973 in the UK, Nidec Control Techniques has a strong
In addition, the touchscreens show customer base across Europe, the Americas and Asia. Its primary markets are based on
every electrical event as it happens in manufacturing automation, in particular industries where high-performance motor control
real time. If any anomaly is detected, the is valued, for example printing, packaging and machine tools. Nidec Control Techniques
system will be shut down. The Safety PLC is also a market leader in motor control for the elevator market. Industrial applications
monitors the 17 main PLC commands and which demand energy efficiency, such as fans, pumps and compressors, are also key
crane movements. considerations. n
Nidec built many layers of redundancy
into the entire I/O system, the power Contact Jacqui Gradwell, Control Techniques, Phone 011 462-1740,
system and the drives to produce a more jacqui.gradwell@mail.nidec.com, www.controltechniques.com

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