YASKAWA SGD7S-xxxDA0 series Product Manual

Contents

12.1 Introduction to the Safety Functions12.1.2 Precautions for Safety Functions12-312 Safety Functions12.1.2 Precautions for Safety FunctionsWARNING To confirm that the HWBB function satisfies the safety requirements of the system, youmust conduct a risk assessment of the system.Incorrect use of the safety function may cause injury. The Servomotor will move if there is an external force (e.g., gravity on a vertical axis) evenwhen the HWBB function is operating. Use a separate means, such as a mechanical brake,that satisfies the safety requirements.Incorrect use of the safety function may cause injury. While the HWBB function is operating, the motor may move within an electric angle of 180°or less as a result of a SERVOPACK failure. Use the HWBB function for an application onlyafter confirming that movement of the motor will not result in a hazardous condition.Incorrect use of the safety function may cause injury. The dynamic brake and the brake signal are not safety-related elements. You must designthe system so that SERVOPACK failures will not cause a hazardous condition while theHWBB function is operating.Incorrect use of the safety function may cause injury. Connect devices that satisfy the safety standards for the signals for safety functions.Incorrect use of the safety function may cause injury. The HWBB function does not shut OFF the power to the SERVOPACK or electrically isolateit. Implement measures to shut OFF the power supply to the SERVOPACK before you per-form maintenance on it.There is a risk of electric shock. Use an SELV-compliant power supply according to EN/IEC 60950-1 to input 24 VDC to thecontrol power supply input terminals.If you use a power supply that is not SELV compliant, safety functions may be lost if the powersupply fails, which may result in machine damage or injury.