Safety engineering
Overview of safety options
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EDS84DPS424 EN 5.0
11.3 Overview of safety options
Depending on the device version, the following safety functions are available:
Safety option 10
Due to safety option 10, the following safety functions can be used:
ƒ Safe torque off (STO),
formerly: safe standstill
If requested, the safe disconnection of the drive is achieved through:
ƒ Directly connected active sensors
ƒ Passive sensors connected to a safety switching device
The safety functions are suitable for applications according to IEC 61508 to SIL 3 and
achieve a performance level (PL) e and the control category 4 according to EN ISO 13849−1.
Safety option 20
Due to safety option 20, the following safety functions can be used:
ƒ Safe torque off (STO),
formerly: safe standstill
ƒ Safe stop 1 (SS1)
ƒ Safe stop emergency (SSE)
ƒ Safe operation mode selector (OMS)
ƒ Safe enable switch (ES)
The safe disconnection of the drive is achieved through:
ƒ a higher−level safety PLC via PROFIsafe/PROFINET
ƒ a higher−level safety PLC via PROFIsafe/PROFIBUS
The functions of the safety option must be parameterised via the »Engineer«.
The motion functions are continued to be executed by the controller. The drive−based
safety monitors the safe compliance with the limit values. When the limit values are
exceeded, the drive−based safety starts the control functions according to EN 60204−1
directly in the controller.
The safety functions are suitable for applications according to IEC 61508 to SIL 3 and
achieve a performance level (PL) e and the control category 3 according to EN ISO 13849−1.
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