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High voltages
The drive is not disconnected from the supply system by the "Safe Torque Off / Safe Standstill"
function. Dangerous voltages of over 1000 V are present on the motor and drive.
High voltages can cause death or serious injury if the safety rules are not observed or if the
equipment is handled incorrectly.
● Do not undertake any work on electrical connections without previously putting all the
See also
Safety instructions (Page 15)
3.6.12.2
Description
The central components of the "Safe Torque Off" function are the safety relay -K110 and the
PSA. Standard components are used for the additionally required time relay -K120 and
auxiliary contactors ‑K121, ‑K125 and ‑K130.
SINAMICS SM150 6SL3815-7NP41-0AA1
Operating Instructions Rev.201910281301 EXAMPLE
WARNING
necessary precautions in place. Observe the five safety rules before undertaking work on
the equipment.
Description
3.6 Description of options
51
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