Encoder Evaluation - Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual

Fig. 6: Dynamization in the case of selection via a passive safety unit
The inputs of the optional safety technology module do not require any dynami-
zation pulses for internal detection of errors (fault exclusion). Thus, an annual
nonrecurring selection is required to ensure an error-free function of the selec-
tion.
7.2

Encoder evaluation

The "safe encoder evaluation" evaluates the connected encoder system and
provides its results (velocity feedback value and position feedback value) to the
safety functions.
For "SafeMotion", the evaluation of a safe encoder at the XG20 or XG21 inter-
face or for double-axis devices at the XG20.1 or XG21.1 interfaces (axis 1) and
XG20.2 or XG21.2 (axis 2).
For use with the "SafeMotion", the save encoders have to comply with the
requirements specified in
Overview on encoder evaluation
The encoder evaluation depends on the operating status:
● In the "operating mode" (OM), the encoder evaluation is active and signals
● In the "parameterization mode" (PM), the encoder evaluation is active and
● In the "configuration mode" (CM), the encoder evaluation is not active and
The parameter P-0-3256 displays the current status of the encoder evaluation,
encoder errors, encoder warning, ....
R911404905, Edition 02
⮫ Required motors and measuring
errors.
does not signal any errors.
does not signal any errors.
ctrlX SAFETY "SafeMotion"
Encoder evaluation
systems.
Bosch Rexroth AG
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