 Two of the fifteen locomotives (EF510-509 and EF510-510) were painted in a dedicated colour scheme of silver with blue, purple, red, orange, and yellow stripes, to match the "Cassiopeia" rolling stock.The first locomotive, EF510-501, entered service on 25 June 2010.From the start of the revised timetable in March 2013, Joban Line freight duties operated by JR East EF510-500 locomotives were operated instead by JR Freight Class EH500 locomotives, and locomotive numbers EF510-501 to 508 and 511 became surplus to requirements.