Ctrlx Safetylink - Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual

ctrlX SAFETY "SafeMotion"
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ctrlX SAFETYlink

Fig. 48: Dual-channel selection with dual-channel wiring
Fig. 49: Dual-channel selection with single-channel wiring
When "single-channel wiring" is used to select SafeMotion, the following fault
exclusion is required:
The accidental deactivation of the safety function by short circuits with other
potentials must be excluded (see EN ISO 13849‑1:2012, table D.4). (Due to the
isolated inputs and possible potential shifts of the 24 V systems, the contact of
the selection channel with ground might cause a selection).
The dual-channel wiring must be preferred to the single-channel wiring with
fault exclusion.
The selection signals can be generated by active or passive safety units (see
chapter "Dynamization").
Dynamization monitoring to detect errors in the wiring has to be executed by
the dynamization source.
Discrete selection via the optional safety technology module
The optional safety technology modules "Mx" are equipped with two inputs.
The digital inputs of the optional safety technology modules can be evaluated
functionally as well as in a safety-relevant way. The local inputs (functional or
safety-relevant use) are configured via P-0-3322.0.2. The inputs can be read and
assigned to individual networks via the parameter P-0-3322 in the" I/O mapper
inputs".
Discrete acknowledgment via the optional safety technology module
The optional safety technology module makes available a dual-channel output
for safe acknowledgment of safety technology states. Different status bits of
SafeMotion can be assigned to the output via the signal control of outputs. The
safe acknowledgment of the safety technology state (e.g., safe state of the axis,
status of the safety function, ...) is effected by a high signal on both outputs
of the output pair. When one output or both outputs have a low signal, the
safe state is not acknowledged. The output pairs always have to be wired via
two channels. Single-channel wiring is only allowed for diagnostic purposes (no
safe acknowledgment).
The safe local output is suited for safety-relevant applications up to
Category 4, PL e according to EN ISO 13849-1 or up to SIL 3 according to
EN 62061.
9.3 ctrlX SAFETYlink
Bosch Rexroth AG R911404905, Edition 02