Patent ID: 8813909

Claim:
A control system for a machine having an elevating operator cage with a control console mounted in the operator cage, the control system including a load sensor that senses external loads applied to the control console or to a hand rail or support connected to the control console, a weight sensor for sensing a change in the apparent weight of the cage, a control device, an input for activation signals, an input for control signals, an input for load signals from the load sensor, an input for weight signals from the weight sensor, and an output for drive control signals, wherein the control device is constructed and arranged to issue a stop drive control signal upon receiving a load signal, and to issue an override signal that overrides the stop drive control signal upon receiving an override input signal, wherein, after issuing the stop drive control signal, the control device issues a withdraw signal that causes the machine to reverse at least partially its movements prior to receiving the load signal, and wherein the control device is constructed and arranged to adopt an override mode if the load sensor is released, and to adopt a load sensor activated state if the load sensor is again activated.