STOBER 4 | System configuration
05/2019 | ID 442790.01
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4.1.4 Accessories
You can find information about the available accessories in the following chapters.
4.1.4.1 Safety technology
The safety modules are used to realize the STO safety function. They prevent the generation of a rotating magnetic field in
the power unit of the drive controller. For an external requirement or in the event of error, the safety module switches the
drive controller to the STO state. Different user interfaces and additional safety functions are available depending on the
selected design of the accessories.
For double-axis controllers, the STO safety function has a two-channel structure that acts upon both axes.
Information
Note that the drive controller is delivered as a standard version without safety technology (SZ6 option). If you want a drive
controller with integrated safety technology, you must order it together with the drive controller. The safety modules are
an integrated part of the drive controllers and must not be modified.
SZ6 option – Without safety technology
ID No. 56660
Standard version.
SR6 safety module – STO using terminals
ID No. 56661
Optional accessory for the use of the Safe Torque Off safety function (STO) in safety-
relevant applications (PLe, SIL3) in accordance with DIN EN ISO 13849-1 and DIN EN
61800-5-2. Connection to higher-level safety circuit through terminal X12 (included
in the terminal set scope of delivery).
SY6 safety module – STO and SS1 using FSoE
ID No. 56662
Optional accessory for the use of the Safe Torque Off (STO) and Safe Stop 1 (SS1)
safety functions in safety-relevant applications (PLe, SIL3) in accordance with DIN
EN ISO 13849-1 and DIN EN 61800-5-2. Connection to the higher-level safety circuit
using Fail Safe over EtherCAT (FSoE).
Detailed information about using the safety technology can be found in the corresponding manual, see the chapter Detailed
information [}202].
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