Fanuc Series 15i/150i-MA (Programming) Operators Manual

B-63324EN/03 SAFETY PRECAUTIONS
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WARNINGS AND CAUTIONS RELATED TO
PROGRAMMING
This section covers the major safety precautions related to programming. Before attempting to perform
programming, read the supplied operator’s manual and programming manual carefully such that you are
fully familiar with their contents.
WARNING
1.Coordinate system setting
If a coordinate system is established incorrectly, the machine may behave unexpectedly as a result of the
program issuing an otherwise valid move command.
Such an unexpected operation may damage the tool, the machine itself, the workpiece, or cause injury to
the user.
2.Positioning by nonlinear interpolation
When performing positioning by nonlinear interpolation (positioning by nonlinear movement between
the start and end points), the tool path must be carefully confirmed before performing programming.
Positioning involves rapid traverse. If the tool collides with the workpiece, it may damage the tool, the
machine itself, the workpiece, or cause injury to the user.
3.Function involving a rotation axis
When programming polar coordinate interpolation or normal-direction (perpendicular) control, pay
careful attention to the speed of the rotation axis. Incorrect programming may result in the rotation axis
speed becoming excessively high, such that centrifugal force causes the chuck to lose its grip on the
workpiece if the latter is not mounted securely.
Such mishap is likely to damage the tool, the machine itself, the workpiece, or cause injury to the user.
4.Inch/metric conversion
Switching between inch and metric inputs does not convert the measurement units of data such as the
workpiece origin offset, parameter, and current position.
Before starting the machine, therefore, determine which measurement units are being used. Attempting
to perform an operation with invalid data specified may damage the tool, the machine itself, the
workpiece, or cause injury to the user.
5.Constant surface speed control
When an axis subject to constant surface speed control approaches the origin of the workpiece
coordinate system, the spindle speed may become excessively high. Therefore, it is necessary to specify
a maximum allowable speed. Specifying the maximum allowable speed incorrectly may damage the
tool, the machine itself, the workpiece, or cause injury to the user.

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