We ran into an odd problem at a scrimmage on Saturday. Our scissor lift, which uses 4 269s at a 1:21 torque gear ratio with elastic, would spontaneously stop. It happened during several matches and our first programming skills attempt. We know we are not overworking our motors, because our gear ratio is huge, and because this design has worked faithfully for 3 full tournaments, the most recent of which we won.
Back when all of our wheel motors were in the power expander and frequently tripped the circuit breaker, we programmed button 7U on our controller to hold all of our motors at 0 for 5 seconds to reset the circuit breakers. We found that after using this reset, the lift would function normally. Because of this, we think there is some electrical problem. Here is our wiring:
Port 1: Intake 1 (269)
Port 2: Left front wheel motor (393) *plugged into power expander*
Port 3: Left rear wheel motor (393)
Port 4: Lift motor 1 (269)
Port 5: Lift motor 2 (269) *plugged into power expander*
Port 6: Lift motor 3 (269) *plugged into power expander*
Port 7: Lift motor 4 (269)
Port 8: Right rear wheel motor (393)
Port 9: Right front wheel motor (393) *plugged into power expander*
Port 10: Intake 2 (269)
Could the scissor lift motors be tripping a circuit breaker? We don't think so, but I wanted to make sure.
If it is not a circuit breaker, what could it be? We know that whatever it is it resets after 5 seconds.