In compliance with the risk analysis, a new state-of-the-art control system has been installed.
The bridge allows pedestrians and cyclists to cross a harbor access road.
The entire system is controlled via a control cabinet array. Normally the bridge is closed. If a ship wants to pass, the barriers close for pedestrians, which is signaled both acoustically by a bell and visually by warning lights. The bridge is then unlocked and raised by a motorized winch. The motor is controlled by a powerful frequency inverter. The traffic lights for shipping turn green and the ships are allowed to pass.
After the traffic lights have switched to red, the bridge is closed again, locked and the pedestrian barriers are opened.
An HMI is located on the side of the winch house, from which the bridge can be controlled in manual or automatic mode. One of the emergency stop mushroom pushbuttons is also located there, which brings the bridge to a standstill when pressed (SS1).
The entire bridge can be viewed via the harbor master’s office, where there is a mobile HMI with the same functions.
On the other side of the bridge is a robust external control cabinet that controls the equipment on this side of the port. Communication between the cabinets takes place via fiber optics.
Several wind measuring stations also continuously measure the current wind speed, as the bridge may no longer be operated above a certain wind speed.