Selecting And Deselecting Sdi When The Motor Is Switched On - Siemens SINAMICS G120 Function Manual

Operation
6.8 Safe Direction (SDI)
6.8.2

Selecting and deselecting SDI when the motor is switched on

Select SDI
Function
1. The higher-level control selects the SDI safety function via a safety input or via the
PROFIsafe safe communication.
2. The inverter limits the speed to the permitted direction of rotation. When SDI is selected,
if the motor rotates in the impermissible direction, then the inverter brakes the motor
down to standstill.
3. After the delay time has expired, the inverter monitors the selected direction of rotation of
the motor.
The inverter tolerates brief motion in the monitored direction of rotation up to an
adjustable angle of rotation of the motor shaft.
Figure 6-39
216
Time response of the safety function SDI (Safe direction)
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA