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Category: Safety & Standards

Pump Is Off—Why Can the Hydraulic Circuit Still Move?
Safety & Standards

Pump Is Off—Why Can the Hydraulic Circuit Still Move?

PLC Play Ground Posted on September 11, 2026

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
Safety & Standards

Drive Shows STO Active—That Does Not Mean the Motor Is Electrically Isolated

PLC Play Ground Posted on September 10, 2026

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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