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Bosch Rexroth AG
Integrated safety functions
Safety function
Dynamization
LSA Control S.L. www.lsa-control.com [email protected] (+34) 960 62 43 01
Rexroth IndraDrive Integrated Safety Technology "Safe Torque Off" (as of MPx-16)
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A0011 STO/SBC active
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C0256 Safety technology configuration error
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E8027 STO/SBC while drive enabled
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F3134 Dynamization time interval incorrect
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F8027 STO/SBC while drive enabled
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F8300 Dynamization pulse width incorrect
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F8301 Error when checking selection signals
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F8302 Error when checking switch-off channels STO/SBC
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F8303 System error STO/SBC
With the safety function "Safe Brake Control" activated, the display of the
IndraDrive Cs control panel shows "STO", because safe brake control can
only be activated in conjunction with safe torque off (STO).
The optional safety technology module "L4" features two 24 V inputs for dual-
channel selection and two dynamization outputs for operation at passive
safety units.
For pin assignments and technical data, please refer to the
Project Planning Manual of the device.
The safety function "Safe Brake Control" can be divided into the following
topics which are described in detail below:
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Dynamization
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Command value input
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Selecting the safety function "Safe Brake Control"
Dynamization is to detect static error states in the wiring and in the safety-
relevant circuits. Dynamization takes place automatically in the background
without having an effect on the safety function or the standard drive functions.
A safety function is selected via an N/C-N/C combination, i.e. a "0"-signal at
both inputs is evaluated as the selection of the safety function. Therefore, the
dynamization of the external selection channels can only take place in the
deselected state (normal operation). Internal dynamizations are carried out
independent of the selection.
For the dynamization of the safety function selection, we distinguish whether
the safety function is selected via an active or a passive safety unit. The
dynamization function is explained in the chapter on "Dynamization".
Dynamization pulses of a duration of 20 µs and more are recognized as valid
dynamization pulses.
The dynamization pulses are monitored for:
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the time interval,
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the pulse width, and
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the sampling ratio.
The "L option" monitors whether the dynamization of the selection signals is
carried out in the deselected state. Monitoring takes place so that
dynamization is carried out at the latest after 1 hour in the deselected state
(normal operation). For this purpose, the time in the deselected state is
added in the drive and only reset by dynamization; i.e. an interim selection
does not cause monitoring to be reset. Monitoring takes place independently
DOK-INDRV*-SI3-**VRS**-AP06-EN-P
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