Which condition is characterized by a minimum resistance R6 during slow start conditions?

The condition characterized by a minimum resistance R6 during slow start conditions is the opening phase. In this context, during the initial stages of operation when the elevator cab doors begin to move apart, the system needs to monitor and accommodate current levels to ensure safe and efficient operation.

At this time, the resistance in the circuit (R6) is minimized to allow for an adequate amount of current to flow, which helps facilitate the smooth movement of the doors as they open. This gradual approach is important to prevent abrupt starts that could cause wear on the components or pose safety risks.

Understanding this concept is crucial, as elevator systems must manage door movements carefully to ensure passenger safety and enhance operational longevity. Other phases such as closing, acceleration, or deceleration involve different resistances and current levels to manage the respective motions of the elevator components.