Rockwell Automation 57C411 Resolver Input Module - Manual (Page 30)

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WARNING
LOSS OF, OR OTHERWISE IMPROPER, RESOLVER SIGNAL CAN RESULT IN
UNCONTROLLED MOTOR SPEED. PROVIDE AN INDEPENDENT METHOD OF
SHUTTING DOWN EQUIPMENT IF THIS SHOULD OCCUR. FAILURE TO OBSERVE
THIS PRECAUTION COULD RESULT IN BODILY INJURY AND IN DAMAGE TO, OR
DESTRUCTION OF, THE EQUIPMENT.
You must also determine the maximum safe operating speed for the
motor, connected machinery, and material being processed. Then,
either verify that the system is incapable of reaching that speed, or
else incorporate the necessary hardware/software to ensure that this
limit will never be exceeded.
WARNING
THE PURCHASER IS RESPONSIBLE FOR ENSURING THAT DRIVEN
MACHINERY, ALL DRIVE TRAIN MECHANISMS, AND THE WORKPIECE IN THE
MACHINE ARE CAPABLE OF SAFE OPERATION AT MAXIMUM SPEEDS. FAILURE
TO OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY INJURY AND IN
DAMAGE TO, OR DESTRUCTION OF, THE EQUIPMENT.