The drive unit
20
The control board
The stairlift is a processor controlled system. The drive unit contains a control board that is accessible when the
drive cover is removed.
Control board (top view)
The control board has the following functionalities:
• Supply and charge
• Drive motor control
• Level motor control
• Swivel motor control
• Brake control
• Gyroscope & accelerometer
• Microcontroller
• Audio amplifier / Speaker
• Memory (storage)
• Interfaces
• Supporting boards
Chair sensor board
The chair sensor board is mounted in the back of the pedestal of the drive unit. It is connected with the system with
a cable to the hub board.
The chair sensor is part of the levelling system and is providing the system with the information about the angle of
the chair.
Figure 4-2: Chair sensor board
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