YASKAWA Sigma-7 Series Product Manual page 23

 When an alarm occurs, remove the cause of the alarm and ensure safety. Then reset the alarm
or turn the power supply OFF and ON again to restart operation.
There is a risk of injury or machine damage.
 If the Servo ON signal is input to the SERVOPACK and an alarm is reset, the Servomotor may
suddenly restart operation. Confirm that the servo is OFF and ensure safety before you reset an
alarm.
There is a risk of injury or machine damage.
 Always insert a magnetic contactor in the line between the main circuit power supply and the
main circuit power supply terminals on the SERVOPACK so that the power supply can be shut
OFF at the main circuit power supply.
If a magnetic contactor is not connected when the SERVOPACK fails, a large current may flow con-
tinuously, possibly resulting in fire.
 If an alarm occurs, shut OFF the main circuit power supply.
There is a risk of fire due to a regenerative resistor overheating as the result of regenerative transis-
tor failure.
 Install a ground fault detector against overloads and short-circuiting or install a molded-case
circuit breaker combined with a ground fault detector.
There is a risk of SERVOPACK failure or fire if a ground fault occurs.
 The holding brake on a Servomotor will not ensure safety if there is the possibility that an exter-
nal force (including gravity) may move the current position and create a hazardous situation
when power is interrupted or an error occurs. If an external force may cause movement, install
an external braking mechanism that ensures safety.
 Disposal Precautions
 Correctly discard the product as stipulated by regional, local, and municipal laws and
regulations. Be sure to include these contents in all labelling and warning notifications
on the final product as necessary.
 General Precautions
 Figures provided in this manual are typical examples or conceptual representations. There may
be differences between them and actual wiring, circuits, and products.
 The products shown in illustrations in this manual are sometimes shown with their covers or
protective guards removed to illustrate detail. Always replace all covers and protective guards
before you use the product.
 If you need a new copy of this manual because it has been lost or damaged, contact your near-
est Yaskawa representative or one of the offices listed on the back of this manual.
 This manual is subject to change without notice for product improvements, specifications
changes, and improvements to the manual itself.
We will update the manual number of the manual and issue revisions when changes are made.
 Any and all quality guarantees provided by Yaskawa are null and void if the customer modifies
the product in any way. Yaskawa disavows any responsibility for damages or losses that are
caused by modified products.
CAUTION
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