Sls Without Braking Ramp Monitoring - Siemens SINAMICS G120 Function Manual

Operation
6.6 Safely Limited Speed (SLS)
6.6.3.2

SLS without braking ramp monitoring

Switching over SLS levels
When is SLS is active, you can switch between four different speed monitoring levels (SLS
levels).
Note
Switching over SLS levels is only possible via PROFIsafe with control word 1. See also
Section: Control word 1 and status word 1 (extended functions) (Page 48).
Function
When you switch from a higher to a lower speed monitoring level (SLS level), the following
takes place:
1. The inverter brakes the motor.
2. Once the delay time has expired, the inverter monitors the speed using the lower speed
monitoring level.
When you switch from one of the lower monitoring level to a higher speed monitoring level,
then the inverter immediately monitors the speed with the higher SLS level.
Figure 6-26
The inverter signals the active SLS level via PROFIsafe to the higher-level control. See also
Section: Control word 1 and status word 1 (extended functions) (Page 48).
198
Switching between different monitoring thresholds
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA