Category: Safety & Standards
Pump Is Off—Why Can the Hydraulic Circuit Still Move?
PLC Play Ground
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Stopping a hydraulic pump does not establish that stored energy is gone.
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Drive Shows STO Active—That Does Not Mean the Motor Is Electrically Isolated
PLC Play Ground
Posted on
Safe Torque Off prevents torque-producing drive energy according to the implemented safety function, but it does not provide electrical isolation.
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