Cypress Semiconductor STK16C88 Manuel d'utilisateur Page 42

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12.02.07
42
Simtek Confidential
Safe Industrial Motor Drives
The Need
Operators need access inside the guard to clear jams or fix other
malfunctions
Instead of a complete shutdown, motion is controlled at safe limits
Axis acceleration on the order of 1 m/s
2
requires capture of last axis
location in milliseconds
Trend
Safety function transitioning from the PLC to the intelligent motor drive
Benefit
Drive based safety has reaction times 400 times faster than a PLC or
controller-based solution
PLC based systems can move 200 – 800 mm versus intelligent drive
based systems at 2 mm
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