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21
The drive unit
Safety sensor board
The safety sensor board (1) is mounted on one of the bolts of the pedestal fixation elements(3). The safety sensor
board will activate the stop of the lift when the horizontal angle is too far from zero or when it deviates to much from
the chair sensor angle.
Figure 4-3: Safety sensor board and hub board inside the pedestal
1) Safety sensor board
2) Hub board
Hub board
The hub board is mounted inside the levelling drum.
The hub board serves as an interconnect between the sensor board, the safety sensor board the two swivel opto's
and the control board.
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