YASKAWA E-S Series Product Manual

Contents

xiv Operation Precautions Maintenance and Inspection PrecautionsWARNING Before starting operation with a machine connected, change the settings of the parameters tomatch the machine.Unexpected machine operation, failure, or personal injury may occur if operation is started beforeappropriate settings are made. Do not radically change the settings of the parameters.There is a risk of unstable operation, machine damage, or injury. Install limit switches or stoppers at the ends of the moving parts of the machine to preventunexpected accidents.There is a risk of machine damage or injury. For trial operation, securely mount the Servomotor and disconnect it from the machine.There is a risk of injury. When an alarm occurs, the motor will coast to a stop. The coasting distance will change withthe moment of inertia of the load and the motor speed. Check the coasting distance during trialoperation and implement suitable safety measures on the machine. Do not enter the machine’s range of motion during operation.There is a risk of injury. Do not touch the moving parts of the Servomotor or machine during operation.There is a risk of injury.CAUTION Design the system to ensure safety even when problems, such as broken signal lines, occur.For example, the E-STP signal is set in the default settings to operate on the safe side if a signalline breaks. Do not change the polarity of this type of signal. Always change to the SERVO OFF state before you turn OFF the power supply. If you turn OFFthe power supply without changing to the SERVO OFF state during operation, the Servomotorwill coast to a stop.NOTICE When you adjust the gain during system commissioning, use the SigmaWin+ Engineering Tool tomonitor the torque waveform and speed waveform and confirm that there is no vibration.If a high gain causes vibration, the Servomotor will be damaged quickly. Do not use the product in applications that require the power supply to be turned ON and OFFfrequently.The elements in the SERVOPACK will deteriorate quickly. After you complete trial operation of the machine and facilities, use the SigmaWin+ to back upthe settings of the SERVOPACK parameters and tables. You can use them to reset the parame-ters and tables after SERVOPACK replacement.If you do not copy backed up parameter settings and table data, normal operation may not be pos-sible after a faulty SERVOPACK is replaced, possibly resulting in machine or equipment damage.DANGER Do not change any wiring while power is being supplied.There is a risk of electric shock or injury.WARNING Wiring, removal work, and inspections must be performed only by qualified engineers.There is a risk of electric shock or product failure.