1 Preface and SafetyYASKAWA ELECTRIC TOBP C730600 57B 1000-Series Option SI-EM3 Installation Manual 7■ General SafetyGeneral Precautions• The diagrams in this section may include options and drives without covers or safety shields to illustrate details.Reinstall covers or shields before operating any devices. The option should be used according to the instructionsdescribed in this manual.• Any illustrations, photographs, or examples used in this manual are provided as examples only and may not applyto all products to which this manual is applicable.• The products and specifications described in this manual or the content and presentation of the manual may bechanged without notice to improve the product and/or the manual.• When ordering new copies of the manual, contact a Yaskawa representative or the nearest Yaskawa sales office andprovide the manual number shown on the front cover.DANGERHeed the safety messages in this manual.Failure to comply will result in death or serious injury.The operator is responsible for injuries or equipment damage caused from failure to heedthe warnings in the manual.NOTICEDo not modify the drive or option circuitry.Failure to comply could result in damage to the drive or option and will void warranty.Yaskawa is not responsible for any modification of the product made by the user. Thisproduct must not be modified.Do not expose the drive or option to halogen group disinfectants.Failure to comply may cause damage to the electrical components in the option.Do not pack the drive in wooden materials that have been fumigated or sterilized.Do not sterilize the entire package after the product is packed.