Safe Speed Monitor (Ssm) - Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual

ctrlX SAFETY "SafeMotion"
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Global safety functions
Fig. 19: |V_act|<P‑0‑3270.0.2
8.1.2

Safe speed monitor (SSM)

The safety function "Safe speed monitor" monitors via two channels whether or
not the axis is within a defined velocity range. The result of this monitoring can
be provided to a higher-level control via the status words.
Features
The safety function "Safe speed monitor" has the following features:
● Required optional safety technology module: The safety function can be
● Maximum safety level:
● Selecting the function: The safety function is always active in normal and
● Monitoring function: Safe Motion safely monitors if the axis is within a
● Status displays:
Bosch Rexroth AG
used in drive systems equipped with the optional safety technology module
"Mx".
The safety function is intended for safety-relevant applications up to Cate-
gory 3, PL d according to EN ISO 13849‑1 or SIL 2 EN 62061.
special operation if the function was configured during commissioning of
the safety technology in the global safety functions (P‑0‑3270.0.1).
defined velocity window (lower threshold: P‑0‑3270.0.7, upper threshold:
P‑0‑3270.0.8).
Both velocity thresholds are bipolar, i.e. the parameterized threshold values
are active in both directions (positive and negative velocity).
The status parameters (P‑0‑3264.0.1, bit 5) indicates if the safety function is
activated.
R911404905, Edition 02