AS5047D datasheet(24/40 Pages) AMSCO

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[v1-07] 2016-Apr-27

AS5047D − Detailed Description

LF Error / COF Error

In case of a LF or COF error, all outputs are changing into a safe

state:

SPI Output: Information in the DIAAGC (0x3FFC) register. The

angle information is still valid.

PWM Output: PWM Clock Period 13 - 16 of the first 16 PWM Clock

Periods = low. Additional there is no angle information valid

(all 4096 clock periods = low)

ABI Output: The state of ABI is frozen to ABI = 111

UVW Output: The state of UVW is frozen to UVW = 000

MAGH Error / MAGL Error

Default diagnostic setting for MAGH error /MAGL error:

In case of a MAGH error or MAGL error, there is no safe state on

the PWM, ABI or UVW outputs if comp_h_error_en= 0 and

comp_l_error_en = 0.

The error flags can be read out with the DIAAGC (0x3FFC)

Enhanced diagnosis setting for MAGH error / MAGL error:

In case of a MAGH error or MAGL error, the PWM, ABI or UVW

outputs are going into a safe state if comp_h_error_en= 1 and

comp_l_error_en = 1. The device is operating with the

performance as explained.

SPI Output: Information in the DIAAGC (0x3FFC) register. The

angle information is still valid, if the MAGH or MAGL error flag

is on.

PWM Output: PWM Clock Period 13 - 16 of the first 16 PWM Clock

Periods = low. Additional there is no angle information valid (all

4096 clock periods = low)

ABI Output: The state of ABI is frozen to ABI = 111

UVW Output: The state of UVW is frozen to UVW = 000

Important: When comp_(h/l)_error_en is enabled a marginal

magnetic field input can cause toggling of MAGH or MAGL

which will lead to toggling of the ABI/UVW outputs between

operational mode and failure mode.

AS5047D Scheda tecnica(PDF) 24 Page - ams AG