Delta MS300 Series Drive
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Jun 22, 2024 9:15 am
The STo fault in Delta MS300 drive indicates a Safety Torque Off (STO) activation. This is a critical safety feature designed to stop the motor immediately in case of emergencies or faults.
This fault comes when the switch action of STO1/SCM1 and STO2/SCM2 (OPEN). To correct the fault reset the switch (ON) and cycle the power.
