Access Flow2A Manual page 20

The drive unit
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)
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
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
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