YASKAWA E Series Product Manual page 18

 Always measure the vibration of the Servomotor with the Servomotor mounted to the machine
and confirm that the vibration is within the allowable value.
If the vibration is too large, the Servomotor will be damage quickly and bolts may become loose.
 When you adjust the gain during system commissioning, use a measuring instrument to monitor
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.
 An alarm or warning may occur if communications are performed with the host controller while
the SigmaWin+ or Digital Operator is operating.
If an alarm or warning occurs, it may interrupt the current process and stop the system.
 Maintenance and Inspection Precautions
 Do not change any wiring while power is being supplied.
There is a risk of electric shock or injury.
 Wiring and inspections must be performed only by qualified engineers.
There is a risk of electric shock or product failure.
 If you replace a Servomotor with a Holding Brake, secure the machine before you replace the
Servomotor.
There is a risk of injury or equipment damage if the equipment falls.
 Wait for at least six minutes after turning OFF the power supply (with a SERVOPACK for a 100-
VAC power supply input, wait for at least nine minutes) and then make sure that the CHARGE
indicator is not lit before starting wiring or inspection work. Do not touch the power supply ter-
minals while the CHARGE lamp is lit after turning OFF the power supply because high voltage
may still remain in the SERVOPACK.
There is a risk of electric shock.
 Replace the Battery according to the correct procedure.
If you remove the Battery or disconnect the Encoder Cable while the control power supply to the
SERVOPACK is OFF, the absolute encoder data will be lost and position deviation may occur.
 Troubleshooting Precautions
 The product may suddenly start to operate when the power supply is recovered after a momen-
tary power interruption. Design the machine to ensure human safety when operation restarts.
There is a risk of injury.
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NOTICE
DANGER
WARNING
CAUTION
WARNING