Blocking Protection - Siemens SINAMICS G120D Operating Instructions Manual

Advanced commissioning
8.23 Monitoring the driven load
8.23.3

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.
Parameter
Number
p0045
r0063
p2175[D]
p2177[D]
r2198
270
Name
Display values of smoothing time constant
CO: Speed actual value
Motor blocked speed threshold
Motor blocked delay time
Status word monitoring functions 2
Operating Instructions, 10/2020, FW V4.7 SP13, A5E34262100B AH
Factory settings
4 ms
- rpm
120 rpm
3 s
-
Converter with the control units CU240D-2