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ctrlX SAFETY "SafeMotion"
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Safety zone acknowledge (SZA)
Fig. 63: Pulse duration not complied with
9.6
Signal control of outputs
Using the "signal control of outputs", it is possible to specify which signal is to
be output via the safe local output pair (XG44 on the optional safety technology
module). The safe local output pair is intended for safety-relevant applications
up Category 4, PL e according to EN ISO 13849-1 or up to SIL 3 according to
EN 62061.
The achievable safety level of the function depends on the signal that is to be
output via the safe local output pair; the entire safety chain is to be considered.
Example: If the encoder standstill signal is applied to the output pair, the safety
level is determined by the encoder detection (usually Category 3, PL d or SIL
2).
ctrlX DRIVE Engineering supports the "signal control of outputs" via the entry
of the same name in the function tree of the Project Explorer, and within the
scope of the wizard for initial commissioning. The dialog is described in detail
in the chapter "Initial commissioning",
The parameters P‑0‑3335.0.1 and P‑0‑3335.0.2 can be used to determine which
signal is to be output via the safe local output. The available status parameters
and status bits are defined in the parameters P‑0‑3335.0.3 and P‑0‑3335.0.4.
The local output on the optional safety technology module can also be used
as dynamization source, e.g. for the local safe inputs. Therefore, the signal
"dynamization source local input" ((P‑0‑3237, bit 15) has to be assigned to the
output.
9.7
Safety zone acknowledge (SZA)
9.7.1
Brief description
If there are multiple axes in a danger zone at a machine, it is useful to combine
them in a safety zone. With a safety control (e.g. ctrlX SAFETY (SAFEX-C.1*)),
it is possible to combine up to 16 axes via the ctrlX SAFETYlink to a safety
zone. The zone setup is independent of the selection of the safety functions
(e.g., ctrlX SAFETYlink, discrete or via the safe master communication) at the
individual axes.
The safety of the entire safety zone is monitored by the safety control (zone
master). The zone master collects the "safety" status from all nodes and gener-
ates the sum signal "safety of the safety zone". This sum signal is provided to all
zone nodes.
Bosch Rexroth AG
"⮫ Signal control of
outputs".
R911404905, Edition 02
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