During slow start opening, resistor R6 has _______ resistance for bypassing current around the door motor armature.

During the slow start opening of an elevator door system, resistor R6 is configured to have minimum resistance. This configuration allows a greater amount of current to bypass around the door motor armature, facilitating a gradual increase in the motor's speed. With low resistance, the electrical impedance in the circuit is reduced, enabling the current to flow more freely and allowing the door motor to start up smoothly without sudden jerks that could cause wear and tear on the mechanical components.

This gradual increase in current helps manage the initial torque applied to the motor, making it essential for both performance and longevity of the door operator system. As a result, setting R6 to minimum resistance is crucial in achieving the desired operation during the slow start phase.