Bosch Rexroth BODAS DSA/12 - About this Product; Product Description DSA;12 and DSA;20

RE95290-01-B/2021-09-13, BoschRexrothAG
About this product | BODAS speed sensors 19/36
5 About this product
The evaluation and assessment of the sensor signals of the speed sensor is
incumbent on the higher-level system. Various different BODAS controllers with
application software are available for this purpose. Further information can also
be found online at www.boschrexroth.com/mobile-electronics.
5.1 Product description DSA/12 and DSA/20
In conjunction with agear wheel, the speed sensor DSA/12 and DSA/20 is suitable
for generating frequency signals proportional to the speed. The sensor exhibits
astatic behavior, i.e. it guarantees pulse generation up to aspeed equating to
afrequency of 0 Hz. The monitoring element consists of aHALL-ASIC supplying
two output signals. The internal two-channel structure requires aperfect alignment
of the sensor.
Due to its compact, sturdy design the sensor is suitable for integrated use with
Rexroth axial piston units among other things.
A6VM axial piston variable motor with mounted DSA/12 speed sensor:
Fig. 9: A6VM with mounted speed sensor DSA/12
• DSA1 series 12 returns asquare-wave signal which is proportional to the
speed as well as aswitching signal for detecting the direction of rotation.
• DSA2 series 12 provides two square-wave signals (at least 15°phase shift)
for the redundant recording of the rotational speed. In addition, this can be
used, for example, to calculate the direction of rotation using acontrol unit from
Rexroth.
Application examples
Example DSA/12
Two basic variants
available for DSA/12