需求
“A turnstile gate rung where a token sensor, valid card reader or motor forward auxiliary contact can seal in the motor, unless the gate-open position input is active.”
接著試試Add a stop pushbutton.Add a gate-closed position input.
這張圖裡有什麼
看懂背後的決策。
01
Use seal-in circuit to latch motor forward until gate reaches open position
02
Parallel OR logic for multiple access inputs
03
Normally-closed limit switch to break seal and stop motor
Applicable to any motor-driven gate with momentary access signals and position feedback.