angle sensors in the robolink joints

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We have noticed, that for some people it is not clear how our angle encoders work and how to make use of it. Here are some facts about them:

1) we use incremental encoders from AMS (AS5304A), absolute encoders are not possible in the current design,

2) in order to define the ZERO position for each DOF, we use a hall sensor, beeing placed in the middle of each angular freedom,

3) that means: each robolink system has to be “initialized”, whenever the power is switched on,

4) the resolution of the encoders are:

29 (polepairs) x 160 (signals) = 4.640 signals per 360° = 0,078° for all rotationg motions of the size RL-50,

31 (polepairs) x 160 (signals) = 4.960 signals per 360° = 0,073° for all pivoting motions of the size RL-50,

62 (polepairs) x 160 (signals) = 9.920 signals per 360° = 0,036° for all motions (rot AND piv.) of the size RL-90 (Base joint),

you can find more information in our current catalogue on page 18 or in our documentation on pages 10-12 (=> pdf download in the support&service area of the robolink homepage).


 The FAQ list will be updated soon (it does currently not contain our new products).