Bosch rexroth ctrlX SAFETY SafeMotion Applications Manual page 169

In conjunction with the optional safety technology module "SafeMotion", the
requirements on the measuring system used which are mentioned below must
be complied with for third-party motors/optional measuring systems so that the
measuring system can be used as a safety technology encoder:
If it is not a motor encoder but an optional encoder which has been connected
to the optional slot XG20 [XG20.1 and XG20.2 for the double-axis device] , this
encoder has to comply with the requirements below.
Please make sure that the encoder can be evaluated by the corresponding
encoder option.
For "SafeMotion", the evaluation of a safe encoder takes place at the XG20
interface [XG20.1 and XG20.2 for the double axis device] or at the XG21 inter-
face [XG21.1 and XG21.2 for the double axis device].
ACUROⓇlink encoder
ACUROⓇlink encoders have to comply with the following requirements so that
they can be used as safety technology encoders in safety-related applications
up to SIL 3 or Category 3, PL e:
● Necessary encoder properties:
● Limit speed: The encoder speed should not exceed the value of 15,000 rpm
● Mechanics:Only rotary encoders are supported. The connection of encoder
Take remaining risks into consideration: see marginal note "Important instruc-
tions regarding inadequate connections of encoder shaft and motor shaft or
encoder housing and motor housing".
● Reliability: The "Mission Time" and the "Proof Test interval" of the encoder
● "Encoder wiring ‑ ctrlX DRIVE":The ACUROⓇlink encoder has to be directly
R911404905, Edition 02
– Baud rate: 10 MBaud in cyclic operation
– Resolution: Only rotational encoders with a resolution which is a multiple
of 2 may be used.
n
in the application.
shaft and motor shaft or encoder housing and motor housing has to be
dimensioned such that accidental loosening or breakage of the connection
can be excluded. The specifications of the encoder manufacturer regarding
the connection of encoder shaft and motor shaft or encoder housing and
motor housing have to be complied with.
have to be complied with. After the "Mission Time" has elapsed, the
encoder has to be decommissioned. When the "Proof Test interval" is over, a
"Proof Test" has to be carried out with the encoder or the encoder has to be
decommissioned.
Note: The drive system ctrlX DRIVE does not monitor or log the "Mission
Time".
Other encoder-specific parameters such as the maximum number of revolu-
tions/cycles have to be complied with (see EN 61800–5–3).
connected to the respective interface [XG20 (or XG20.1 and XG20.2 for
double-axis devices]; mere plug-in connectors are allowed. Branches to
other evaluation devices, a third-party supply, interconnecting active units
or switching between encoders are not allowed.
ctrlX SAFETY "SafeMotion"
First use
Bosch Rexroth AG
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