6.7.6.3 Blocking protection
Function description
If the mechanical load is too high, the motor may block. For a blocked motor, the motor current
corresponds to the set current limit without the speed reaching the specified setpoint.
If the speed lies below the speed threshold p2175 for the time p2177 while the motor current
reaches the current limit, the converter signals "Motor blocked" and fault F07900.
Parameters
Number Name Factory settings
p0045 Display values of smoothing time constant 4 ms
r0063 CO: Speed actual value - rpm
p2175[D] Motor blocked speed threshold 120 rpm
p2177[D] Motor blocked delay time 3 s
r2198 Status word monitoring functions 2 -
Advanced commissioning
6.7 Drive protection
SINAMICS G120XA converter
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB 313
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