Siemens SINAMICS S120 Function Manual page 281

Activating Safety Integrated
1. Open the Safety Integrated selection window and select the required safety control type.
2. In the drop-down list below that, select "[1] Safety without encoder and brake ramp
(SBR)" or "[3] Safety without encoder with acc_monitoring (SAM)/delay time."
3. Set the actual value acquisition cycle (p9511) to the value of the current controller cycle
(p0115[0]) (e.g. 125 µs).
4. Then click in the "Configuration" dialog on "Mechanical system configuration": Set the
actual value tolerance (p9542) to a higher value (e.g. 1 mm or 12 °).
When configuring the gearbox ratio, take into account the pole pair number of the motor.
Note
Interrelationship between the electrical ↔ mechanical speed
The encoderless safe actual value sensing calculates the electric speed of the drive. The
pole pair number (r0313) specifies the factor with which the electrical speed must be
multiplied in order to obtain the mechanical speed at the motor shaft.
5. Open SS1, and set the shutdown velocity > 0 (p9560). This is only absolutely necessary if
"Safety without encoder with braking ramp (SBR)" was selected.
6. Open SLS/SDI, and switch over all of the stop responses to "[0] STOP A" or "[1] STOP B"
(p9563[0...3], p9566) and then close the window.
7. You can now carry out the user-specific safety settings.
8. Using p9585, define the value for the "SI Motion fault tolerance actual value acquisition -
sensorless" (see Section "Notes regarding setting parameters for safe actual value
sensing without encoder (Page 165)").
9. Click the "Copy parameters" button.
10.Click the "Activate settings" button.
11.Switch the drive off and back on again to accept the changes.
Note
Response to message C01711/C30711
If during acceleration or deceleration, the drive outputs the message C01711/C30711
(message value 1041 to 1043), this indicates problems, for example, with values too high
for acceleration/deceleration. You have the following options to remedy this:
• Reduce the ramp gradient.
• Use the extended ramp-function generator (with rounding) to set a more gentle ramp
• Reduce the precontrol.
• Change the values of parameters p9586, p9587, p9588, p9589 and p9783 (see the
Safety Integrated
Function Manual, 12/2018, 6SL3097-5AR00-0BP1
up.
specifications in the SINAMICS S120/S150 List Manual).
6.7 Commissioning Safety Integrated functions
Commissioning
279