Siemens SINUMERIK MC Commissioning Manual page 157

Note
No detection of a change of direction with the aid of p1820 or p1821
If the direction of rotation is reversed via p1820 or p1821, then safe monitoring is still possible:
However, in this case, the setpoint limitation r9733 is calculated with the wrong direction of
rotation. A reversal of the rotational direction with p1820 or p1821 therefore does not make
sense.
Restart after pulse cancellation for p9509.8 = 0
If the drive has been switched off via OFF1/OFF2/STO etc., the following steps need to be
carried out before a restart can be performed:
1. Case
2. Case
3. Case
Safety Integrated (with SINAMICS S120)
Commissioning Manual, 02/2020, A5E46305916B AB
● State after switching on
● SDI selected
● STO selected
● Pulse suppression active
● Deselect STO
● The drive enable must be issued within 5 seconds via a positive edge at OFF1, otherwise
STO is reactivated.
● Situation
● Traversing to standstill with SDI selected
● Initiate OFF1
● Pulses are canceled; internal selection STO becomes active
● Select STO
● Deselect STO
STO activated internally via pulse suppression: This activation must be undone by se‐
lecting/deselecting STO.
● The drive enable must be issued within 5 seconds via a positive edge at OFF1, otherwise
STO is reactivated.
● Situation
● Traversing to standstill with SDI selected
● Initiate OFF1
● Pulses are canceled; internal selection STO becomes active
● Deselect SDI
STO activated internally via pulse suppression: This activation must be undone by de‐
selecting SDI.
● Select SDI
The drive enable must be issued within 5 seconds via a positive edge at OFF1, otherwise
STO is reactivated.
Safety functions integrated in the drive
4.12 SDI
157