AC CONTROLLER The 7FB series vehicle is installed with the travelling and load handling controller that controls the traveling and load handling systems and the PS controller that controls the PS system. SAS function controllers are built in respective controllers as shown below. Mast control: Built in the travelinglload handling controller. Rear wheel swing control: Built in the PS controller. Steering knob offset correcting control: Built in the PS controller. Each of them is a multifunctional controller utilizing a microcomputer. The traveling and load handling controller provides high performance in a wide range by means of inverter control of the AC motor drive system. The controller has self diagnosis function that automatically detects any abnormality of the accelerator, PS circuit, SAS function or any other sensor and displays the corresponding error code together with the warning buzzer tone. At the same time, an action such as stopping traveling, stopping load handling or restriction of traveling speed is automatically taken to ensure safety. Identification of faulty portion and functional check of the traveling and load handling circuits, each operating system and sensors are also possible by setting the display to the analyzer (fault analysis) mode. See page 4-2 in the "Multidisplay Function" section for the diagnosis, and page 4-7 in the "Multidisplay Function" section for the analyzer.
PS controller