YASKAWA Sigma-V Series User Manual page 11

Operation
• Conduct trial operation on the servomotor alone with the motor shaft discon-
nected from machine to avoid any unexpected accidents.
Failure to observe this caution may result in injury.
• Before starting operation with a machine connected, change the settings to match
the parameters of the machine.
Starting operation without matching the proper settings may cause the machine to run out
of control or malfunction.
• Avoid frequently turning power ON and OFF.
Since the SERVOPACK has a capacitor in the power supply, a high charging current flows
when power is turned ON. Frequently turning power ON and OFF causes main power
devices like capacitors and fuses to deteriorate, resulting in unexpected problems.
• Forced stop function with forward/reverse overtravel is not effective during JOG
mode operation using utility function Fn002 and zero point search using Fn003.
• When using the servomotor for a vertical axis, install the safety devices to prevent
workpieces to fall off due to occurrence of alarm or overtravel. Set the servomo-
tor so that it will stop in the zero clamp state at occurrence of overtravel.
Failure to observe this caution may cause workpieces to fall off due to overtravel.
• When not using the tuning-less function, set to the correct moment of inertia ratio
Pn103.
Setting to an incorrect moment of inertia ratio may cause vibration.
• Do not touch the SERVOPACK heatsinks, regenerative resistor, or servomotor
while power is ON or soon after the power is turned OFF.
Failure to observe this caution may result in burns due to high temperatures.
• Do not make any extreme adjustments or setting changes of parameters.
Failure to observe this caution may result in injury or damage to the product due to unsta-
ble operation.
• When an alarm occurs, remove the cause, reset the alarm after confirming safety,
and then resume operation.
Failure to observe this caution may result in damage to the product, fire, or injury.
• Do not use the holding brake of the servomotor for braking.
Failure to observe this caution may result in malfunction.
• Always use the servomotor and SERVOPACK in one of the specified combina-
tions.
Failure to observe this caution so may result in fire or malfunction.
Maintenance and Inspection
• Do not disassemble the SERVOPACK.
Failure to observe this caution may result in electric shock or injury.
• Do not attempt to change wiring while the power is ON.
Failure to observe this caution may result in electric shock or injury.
• When replacing the SERVOPACK, resume operation only after transferring
the previous SERVOPACK parameters to the new SERVOPACK.
Failure to observe this caution may result in damage to the product.
CAUTION
CAUTION
xi