Nidec Industrial Solutions partnered with the crane manufacturer (Kocks) and the end user (Huntington Ingalls) to provide a complete turnkey solution that matches the specific requirements of the end user. The scope of the project included the entire electrical power and control package on the 315-metric ton crane. Nidec also achieved the goal of synchronous operation and multiple tiers of redundancy.
Nidec has a 15-year development relationship with Huntington Ingalls and we worked with their teams to develop the system required for operation of this crane. For instance, Nidec worked with Huntington Ingalls to design the control system so that the crane operator can customize what the joy sticks control. By using the touchscreen, the operator can make the joysticks run any of the hoists or run any combination of hoists together.
In addition, the touchscreens show every electrical event as it happens in real time. If any anomaly is detected, the system will be shut down. The Safety PLC monitors the 17 main PLC commands and crane movements.
Nidec built many layers of redundancy into the entire I/O system, the power system, and the drives to produce a more reliable crane. Nidec also provided a data historian for the crane’s operations that can track alarms for multiple years.
The HMI System can display real time trending of analog data for all relevant functions and store it in historical trending for a period of 30 days. This allows analog data to be viewed at a later date.
Load testing was successful. The crane runs at a higher speed than the previous crane and performs very accurate synchronized operations. The redundancy in drive systems enhances the reliability of the crane. Nidec custom software, specially designed for
Huntington Ingalls, allows the operator to control the load very accurately and move it safely at all times.