As shown in the illustration of the elementary diagram of a three speed anchor windlass controller, if the windlass drive motor automatically stops due to a loss of supply voltage, what must be done to resume operations after the restoration of voltage? See illustration EL-0073.
• Trace the low-voltage relay (LV) and its contacts to see how loss and restoration of power affect the control circuit. • Compare the roles of the master switch (MS1–MS6) and the emergency switch (EM SW) in energizing the control circuit. • Notice how the circuit requires a deliberate reset action so the windlass cannot restart automatically after a power failure.
• When supply voltage is lost, which relay or contact in the control circuit drops out and prevents the motor from restarting automatically? • After voltage is restored, which operator control must be moved to a different position to re‑energize the LV/holding circuit and allow any hoist/lower speed contactors to pick up again? • Does the emergency switch act as a momentary safety stop, or is there another switch whose OFF position is required to complete the reset path shown near the "Reset" label?
• Follow the path from the power supply, through LV and BL contacts, to the master switch contacts (MS1–MS6) and see what must be closed again after a trip. • Verify which option (emergency switch vs. master switch vs. doors) actually appears in series with the LV (low‑voltage) relay coil or its holding circuit on the schematic. • Confirm that the required action forces the operator to intentionally re‑start the windlass rather than letting it start automatically when voltage comes back.
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