Yaskawa Sigma-5 User Manual: Setup for Linear Motors - Manual (Page 14)

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 Operation (cont’d)
CAUTION
• If the SERVOPACK, the absolute linear scale, or the linear servomotor is
replaced, the polarity detection function must be executed again.
Failure to observe this caution may result in the linear servomotor moving in an
unpredictable manner.
• Before operation, install a limit switch or stopper on the end of the slider to
prevent unexpected movement.
Failure to observe this caution may result in injury.
• During trial operation, confirm that the holding brake works correctly. Fur-
thermore, secure system safety against problems such as signal line dis-
connection.
• 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.
• Do not frequently turn power ON and OFF.
• Frequently turning power ON and OFF causes elements inside the SERVOPACK
to deteriorate. Do not use the servo drive with an application that requires fre-
quently turning power ON and OFF.
• After the actual operation starts, the allowable interval for turning power ON and
OFF is one hour or longer.
• When carrying out JOG operation (Fn002), origin search (Fn003), or
EasyFFT (Fn206), forcing movable machine parts to stop does not work for
forward overtravel or reverse overtravel. Take necessary precautions.
Failure to observe this caution may result in damage to the equipment.
• When using the linear servomotor for a vertical axis, install safety devices
to prevent workpieces from falling due to alarms or overtravels. Set the lin-
ear servomotor so that it will stop in the zero clamp state when overtravel
occurs.
Failure to observe this caution may cause workpieces to fall due to overtravel .
• When not using turning-less function, set the correct mass ratio (Pn103).
Setting an incorrect mass ratio may cause machine vibration.
• Do not touch the SERVOPACK heatsinks, regenerative resistor, or linear
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 changes in the settings of param-
eters.
Failure to observe this caution may result in injury or damage to the product due to
unstable operation.
• If an alarm occurs, shut down the main circuit power supply.
Failure to observe this caution may result in fire due to regenerative resistor over-
heating caused by regenerative transistor failure.
• 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.
• An alarm or warning may be generated if communications are executed
with the host controller during operation using SigmaWin+ or the digital
operator.
If an alarm or warning is generated, the process currently being executed may be
aborted and the system may stop