AS5132-SS_EK_AB ams

AS5040 8-bit Programmable Magnetic Rotary Encoder AS5132-AB-v1.0 AS5132 Adapterboard Programmable Magnetic Rotary Encoder OPERATION MANUAL 1 General Description The AS5132 is a contactless magnetic rotary encoder for accurate a brushless DC motor. An incremental signal is available as an angular measurement over a full turn of 360 degrees. It is a option. systemon- In addition to the angle information, the strength of the magnetic chip, combining integrated Hall elements, analog frontend and field digital signal processing in a single device. is also available as a 5-bit code. To measure the angle, only a simple two-pole magnet, rotating over A software programmable (OTP) zero position simplifies assembly the center of the chip is required. as the zero position. The magnet does not need to be mechanically The absolute angle measurement provides instant indication of the aligned. magnets angular position with a resolution of 8.5 bit = 360 positions To optimize the torque characteristic at a certain speed per revolution. This digital data is available as serial output over the theAS5132 has the option to use a static or dynamic pre- interface and as a pulse width modulated (PWM) signal. commutation An additional U,V,W output can be used for a block commutation for 2 The AS5132 Adapter board 2.1 Board description The AS5132 adapter board is a simple circuit allowing test and evaluation of the AS5132 rotary encoder quickly without building a test fixture or PCB. The PCB requires 5V power supply and GND connection. To program the device or read out the absolute position of the magnet via SSI a software is mandatory. COM/INC PIN is needed to select UVW Output or ABIndex. To use the static or dynamic pre-commutation a programming on the device is mandatory. Figure 1: AS5132 Adapterboard UVW or ABIndex connection AS5132 encoder COM/INC PIN to 4 x 2.6mm select UVW or ABI mounting holes Revision 1, April 2012 Page 1 of 6 www.austriamicrosystems.com AS5132 Magnetic Rotary Encoder Adapterboard Operation Manual 2.2 Mounting the AS5132 adapter board Rotating shaft and magnet holder Not ferromagnetic (plastic, brass, copper, Bearing stainless steel, aluminum) Casing Spacer M2~M2.5 Screw + nut AS5132-AB PCB Figure 2: AS5050 adapter board mounting and dimension A diametric magnet must be placed over on under the AS5132 encoder, and should be placed centered in y direction and 4.1mm with respect to PIN1 in x direction. Tolerance of 0.5mm. The airgap between the magnet and the encoder casing should be maintained in the range 0.5mm~2mm (magnet related). The magnet holder must not be ferromagnetic. Materials as brass, copper, aluminum, stainless steel are the best choices to make this part Revision 1, April 2012 Page 2 of 6 www.austriamicrosystems.com