3IntroductionThank you for purchasing a Current Vector Control General-purpose Varispeed G7/F7Inverter and a SI-T MECHATROLINK-I/MECHATROLINK-II Communications InterfaceCard (called “SI-T Card” below).This manual describes the operation and specifications of the SI-T Card, which connects tothe MECHATROLINK-I/MECHATROLINK-II high-speed field network for exchangingdata. Be sure that you have read and understood this manual before attempting to operate theSI-T Card.For details on operating the Inverter itself, refer to the Varispeed G7/F7 Series InstructionManual (TOE-S616-60.1, TOE-S616-55.1).Yaskawa Electric, Inc.General Precautions• The diagrams in this manual may be indicated without covers or safety shields in order to showdetails. Be sure to restore covers or shields before operating the Inverter, and operate the Inverteraccording to the instructions provided in this manual.• The products and specifications described in this manual or the contents and presentation of themanual may be changed without notice to improve the product and/or the manual.• When ordering a new copy of the manual due to damage or loss, contact your Yaskawa represen-tative or the nearest Yaskawa sales office and provide the manual number shown on the frontcover.• Any modifications to the product by the customer invalidate the warranty, and Yaskawa accepts noresponsibility for the results of any modifications