Installation
Mounting features
CAD model
Mounting the device
Device has 4x 2.6mm diameter mounting holes, suitable for M2.5 screws. The mounting hole pads are 5.0mm in diameter. Design any mounting posts to be no greater than 5.0mm in diameter.
Encoder Target
AS5047p magnetic target
The AS5047p returns the position of a diametrically magnetised cylindrical magnet mounted to a rotating structure at a fixed distance from the surface of the sensor.
| Magnet type | Cylindrical diametrically magnetised Neodymium Iron Boron (NdFeB) N35 |
| Potential part number | Radial Magnets Inc 9042, Digikey 469-1070-ND |
Magnet mounting requirements
In practice the AS5047p is quiet tolerant to magnet misalignment and in most cases will produce a reasonable output. Mounting guidelines are presented below.
| Vertical mounting distance | Between 0.5mm and 1.8mm from the surface of the sensor |
| Suggested magnet size | 6mm diameter, >= 2.5mm height |
| Bz (Orthogonal magnetic field strength) | 35mT - 70mT peak field strength at a radius of 1.1mm |
For further detailed information consult the AustriaMicroSystems AS5047p datasheet. Although it is a different sensor the AS5040 datasheet also offers useful mounting guidelines.
Magnet mounting example
