Siemens Sinamics S120 Function Manual page 235

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 °) and when configuring
the gear ratio, take into account the pole pair number of the motor.
Not e
Int errelationship between t he electrical ↔ mechanical s peed
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 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 Notes regarding setting parameters for safe actual value sensing
without encoder (Page 154).
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.
Not e
Res ponse t o 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
Safety Integrated
Function Manual, (FHS), 07/2016, 6SL3097-4AR00-0BP6
up.
specifications in the List Manual).
6.6 Commissioning Safety Integrated functions
Commissioning
235