Braking system for an industrial truck

摘要

The system has a steering controller (22) actuating a switch contact (28), which breaks an electrical connection between a battery (32) and an emergency stop brake. Electronic power switches (40, 42) are connected in series with the switch contact and actuated by a pulse width modulation (PWM) actuator of a vehicle controller (36). A controller area network bus (44) is connected between the steering and vehicle controllers such that the switch contact and the switches are connected according to measures of cycles of the PWM actuator during occurrence of an error signal or a brake signal.