Encoder Connection; Output Shaft; Plain Shaft; Output Shaft With Key - Bosch Rexroth MAD Project Planning Manual

MAD / MAF Asynchronous Housing Motors
Relative
9.11.4

Encoder connection

9.12

Output shaft

9.12.1

Plain shaft

9.12.2

Output shaft with key

The relative accuracy of encoder systems is also referred to as "repeat accu‐
racy". It is mainly determined by the interpolation discrepancies occurring
when the measurement signals are further processed in the built-in and the
external interpolation and digitalization electronics. For MAD/MAF motors, the
following guidelines apply for operation with Rexroth drive controllers (as of
the publishing date of this documentation):
Encoder op‐
tion
Single-turn absolute encoder with EnDat2.1 inter‐
S2
face. Sine/cosine signals 1 Vss with 2048 periods.
Multi-turn absolute encoder with EnDat2.1 interface.
M2
Sine/cosine signals 1 Vss with 2048 periods.
C0
Sine/cosine signals 1 Vss with 2048 periods.
Tab. 9-17: Relative encoder accuracy
Since both hardware and firmware of the controllers are under continuous
further development, actual values may be different from the values specified
above. Therefore, the data in the current documentation of the controllers al‐
ways has to be observed.
The accuracy of encoder systems is only a subordinate factor for the preci‐
sion of machining and positioning process of a plant. Decisive factors of the
precision that can be achieved are, among others, the functionality of the
plant and the quality of the mechanical design.
The position of the encoder connection cannot be changed. For more de‐
tailed information, please refer to the motor dimension sheet and to
8.6 "Encoder connection " on page
For detailed information on the controller-side encoder connection and on the
parameterization, please refer to the documentation of the controllers.
The recommended standard version for MAD/MAF motors offers a force-fit,
backlash-free shaft-hub connection with very quiet running. Use clamping
sets, pressure sleeves or clamping elements for coupling the machine ele‐
ments to be driven.
The optional key according to DIN 6885, Sheet 1, Edition 08-1968, allows
form-locking transmission of torques with constant direction and low require‐
ments for the shaft-hub connection.
Technical data
Incremental encoder
182.
R911295781_Edition 11 Bosch Rexroth AG
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Application notes
Relative
Precision
± 0.001'
± 0.005'
± 0.01'
chapter