YASKAWA SGDV User Manual page 9

• Inverting the polarity of the brake signal (/BK), i.e. positive logic, will prevent the holding brake from
working in case of its signal line disconnection.
If this setting is absolutely necessary, check the operation and confirm that there are no safety prob-
lems.
• Provide separate AC/DC power supplies for the main circuits and for controls.
Failure to observe this caution may result in malfunction.
• Do not connect devices (such as motors or solenoids) that greatly change the load or devices (such
as electromagnetic switches) that generate surge voltages to the controller power line.
Failure to observe this caution may result in deterioration of the internal elements or a blown fuse.
Operation
• Always use the servomotor and SERVOPACK in one of the specified combinations.
Failure to observe this caution may result in fire or malfunction.
• Conduct trial operation on the servomotor alone with the motor shaft disconnected from the
machine to avoid accidents.
Failure to observe this caution may result in injury.
• During trial operation, confirm that the holding brake works correctly. Furthermore, secure system
safety against problems such as signal line disconnection.
• Before starting operation with a machine connected, change the parameter 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 mal-
function.
• Do not turn the power ON and OFF more than necessary.
Do not use the SERVOPACK for applications that require the power to turn ON and OFF frequently. Such
applications will cause elements in the SERVOPACK to deteriorate.
As a guideline, at least one hour should be allowed between the power being turned ON and OFF once actual
operation has been started.
• 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 servomotor for a vertical axis, install safety devices to prevent workpieces from fall-
ing due to alarms or overtravels. Set the 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 the tuning-less function, set the correct moment of inertia ratio (Pn103).
Setting an incorrect moment of inertia ratio may cause machine vibration.
• Do not touch the SERVOPACK heat sinks 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 equipment due to unstable 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 equipment, fire, or injury.
• Do not use the holding brake of the servomotor for braking.
Failure to observe this caution may result in malfunction.
• The servomotor will decelerate to a stop if the main-circuit or the control-circuit power supply turns
OFF during operation without turning servo OFF.
• 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 stop the current process and stop the system.
CAUTION
CAUTION
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