Stall Protection (Only For Vector Control) - Siemens SINAMICS S120 Function Manual

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Monitoring and protective functions

8.4 Stall protection (only for vector control)

Function diagrams (see SINAMICS S List Manual)

● 8012 Torque messages, motor blocked/stalled

Overview of key parameters (see SINAMICS S List Manual)

● p2175 Motor blocked speed threshold

● p2177 Motor blocked delay time

Stall protection (only for vector control)

If, for closed-loop speed control with encoder, the speed threshold set in p1744 for stall

detection is exceeded, then r1408.11 (speed adaptation, speed deviation) is set.

If, in the low speed range (less than p1755 * p1756), the fault threshold value, set in p1745 is

exceeded, then r1408.12 is set (motor stalled).

If one of the two signals is set, then after the delay time in p2178, fault F7902 (motor stalled)

Block protection

Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4

Drive Functions

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