5. The monitoring time defines the gradient of the monitoring curve when braking the load.
If the monitoring curve should be parallel to the down ramp of the load, then you must set
the following: Monitoring time = ramp-down time (OFF3) / gear ratio.
Gear ratio = load/motor revolutions.
Example: Gear ratio = 1 / 3 ⇒ monitoring time = ramp-down time (OFF3) × 3.
A monitoring time shorter than the above calculated value does not make sense, as the
inverter can reduce its monitoring curve faster than the load can be braked.
The longer you set the monitoring times, the more tolerant the monitoring.
6. Set the reference speed to the value of the maximum speed.
7. Close the screen form.
You have set the SS1 function with braking ramp monitoring.
Procedure with Startdrive
To set the SS1 function with braking ramp monitoring, proceed as follows:
1. Press the button for the SS1 function.
2. Select "with SBR".
3. The shutdown speed SS1 is a condition for the transition into the STO function.
4. Press the "SBR" button.
Commissioning
5.12 Setting extended functions
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
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