
12.02.07
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Simtek Confidential
Safe Industrial Motor Drives
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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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