E-12
Maintenance and Inspection Precautions
• When overtravel occurs, the power supply to the motor is turned OFF and the
brake is released. If you use the Servomotor to drive a vertical load, set the
Servomotor to enter a zero-clamped state after the Servomotor stops. Also,
install safety devices (such as an external brake or counterweight) to prevent
the moving parts of the machine from falling.
• Always turn OFF the servo before you turn OFF the power supply. If you turn
OFF the main
circuit power supply or control power supply during operation
before you turn OFF the servo, the Servomotor will stop as follows:
• Always measure the vibration of the Servomotor with the Servomotor
mounted to the machine and confirm that the vibration is within the allowable
value.
• 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.
• An alarm or warning may occur if commun
ications are performed with the
host controller while the SigmaWin+ or Digital Operator is operating.
• Do not change any wiring while power is being supplied.
• If you turn OFF the main circuit power supply during operation without
turning OFF the servo, the Servomotor will stop abruptly with the dynamic
brake.
• If you turn OFF the control power supply without turning OFF the servo, the
stopping method that is used by the Servomotor depends on the model of the
SERVOPACK. For details, refer to the manual for the SERVOPACK.
If the vibration is too large, the Servomotor will be damage quickly and bolts
may become loose.
If a high gain causes vibration, the Servomotor will be damaged quickly.
If an alarm or warning occurs, it may interrupt the current process and stop the
system.
There is a risk of electric shock or injury.
Continued from previous page.
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