SINAMICS S: Control of the Safety Integrated Basic Functions of a S120 via onboard terminals
A plant is to be safely shut down after actuation of the emergency stop button, whereby each drive is to be switched torque-free.
This is to be implemented with the safety functions integrated in the SINAMICS S120, which can be controlled without additional hardware.
The control of the STO and SS1 Basic Functions on a SINAMICS S120 drive line-up is shown in this function example.
The drive line-up in the booksize format comprises an infeed and a Double Motor Module. The two servomotors, which are independent of one another, are controlled from the Double Motor Module. A Smart Line Module is used as infeed.
The -S1 two-channel emergency stop mushroom pushbutton is
connected to the Control Unit and the EP terminals of the Double
Motor Module (-X21 and -X22). To do this, one channel is connected
to an arbitrary digital input of the Control Unit, e.g. to DI 2.
The other channel is connected to the EP terminals of the Motor
Module (terminals 3 and 4). This wiring ensures two independent
shutdown paths, which guarantees the safety category SIL2, PL d,
When an emergency stop (-S1) is required, drive 1 is shut down with the drive-integrated STO function and drive 2 with SS1.
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|SET project according IEC 62061|
|SET project according ISO 13849|
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