At the end of the first closing cycle the main liftcontroller takes the car to the Fire Fighters' access floor, if it is not already there.
如果电梯不在消防出口楼层，那么在第一次完全关门后，电梯主控制箱将控制电梯运行到消防出口楼层。
2
The Main liftcontroller must steadily monitor the continuous pressure of the car push-buttons (open door and floor call push-buttons), performed by the Fireman controlling the installation.
Pitch controller: to maximize lift as the wind speed changes, a controller can automatically rotate each blade anywhere from a fraction of a degree to multiple degrees per second.