SINAMICS S: Safety-control of a S120 using S7-300/400 (STEP 7 V5) with PROFINET and Safety Integrated (encoderless via PROFIsafe)
Control of Safety Integrated Extended Functions SS1, SLS and SDI using PROFIsafe with PROFINET for encoderless drives.
This function example shows how safety functions SS1, SLS and SDI are controlled via PROFIsafe with PROFINET at a SINAMICS S120 drive.
The drive line-up in the booksize format comprises an infeed and a Double Motor Module. A Control Unit CU320-2 DP is used for the closed-loop motor control. An induction motor is controlled using the Double Motor Module without an encoder. The second connection (-X1) is not used in this example. A Smart Line Module is used as infeed.
The safety-relevant signals are sensed using fail-safe inputs of the ET200M and logically processed in the F-CPU. From the fail-safe data, the F-CPU generates a PROFIsafe telegram for the drive. This is transferred to the drive via PROFINET; there, it controls the safety functions.
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