Motion control system helps lighthouse
Mclennan has supplied a custom-designed motion control system to Irish Lights to help increase the efficiency and reliability of its lighthouse drive train technology.
The motion control system drives 5,000 kg lantern optical system at a constant speed from a 24V battery source. It will be used to provide a long life, low maintenance and cost-effective solution for Mclennan’s unmanned lighthouse on Tory Island, off the north-west coast of County Donegal.
An integrated brushless servo motor with built-in encoder, servo drive and intelligent
motion controller was chosen from Mclennan’s distribution partner JVL Industri Elektronik.
A 400 W version with 24 – 48 V DC power and RS 485 communications is part of a range that extends to a wide choice of communications and servo feedback options. This distributed control solution also minimises cabling between the motor control and the control cabinet in the lantern room where space is at a premium.
For the drive mechanics, two low-backlash planetary gearboxes were mechanically coupled as a single rotary servo-actuator to provide the required torque and speed characteristics for the application. With a final output speed of around 14 rpm and the stringent acceleration torque and generous safety margins accounted for, Mclennan selected NP series 015 and 035 gearboxes from its distribution partner WITTENSTEIN alpha.
These high efficiency gear units, with 70mm and 120mm nominal diameters, provided 10:1 and 20:1 ratios respectively, and the two-part assembly was complemented with a servo flange output and a Mclennan-designed shaft adapter for the drive pinion. The free-wheel clutch was also integrated into the assembly.
By Rebecca Jeffrey
Latest Press Releases
Dynamic Load Monitoring, specialists in the design and manufacture of Load Cell’s and Cable Working ... Read more
Dixon is a premier manufacturer and supplier of marine fluid transfer products for a wide range of a... Read more
Caspian Offshore Construction has recently taken delivery of a Damen Stan Tug 1606 ICE class in Kaza... Read more
On 2nd August, Damen Shipyards Hardinxveld hosted a naming ceremony for S. T. Marine Support’s new M... Read more
Damen Shipyards Group has recently signed a contract for the delivery of a pontoon to France-based c... Read more