Siemens SINAMICS G220 - Messages;Monitoring Functions; Stall Message; Blocking Message

14.11.16 Messages/Monitoring functions
14.11.16.1 Stall message
Overview
If the load of a standard induction motor exceeds the stall torque of the motor, the motor
can stall even during operation on the converter. A stalled motor is stationary and does not
develop su󹪟cient torque to accelerate the load.
The "Stall message" function detects the overload of a standard induction motor. The
function stops the motor and generates a suitable message.
Description of function
If error signal r1746 exceeds the parameterized error threshold p1745, the converter sets status
signal r1408.12 = 1, thus detecting the stalling of the drive. After a de󹪝ned delay time p2178,
the converter outputs fault F07902.
The function is only e󹪜ective in the low-speed range.
Parameters
The following list contains the parameters of the "Stall message" function.
Number Name Unit
r1408.0...31 Status word current controller 
p1745[0...n] Motor model error threshold stall detection [%]
r1746[0...5] Motor model error signal/threshold value stall detection [%]
p2178[0...n] Motor stalled delay time [s]
r2198.0...13 Status word monitoring 2 
14.11.16.2 Blocking message
Overview
The "Blocking message" function detects that a stuck load machine is preventing the motor
from rotating. The function stops the motor and generates a suitable message.
Description of function
If the speed lies below the speed threshold p2175 for the time p2177 and the motor current
simultaneously reaches the current limit, the converter signals "Motor blocked" and fault
F07900.
0
Q
Functions
14.11Drive functions
SINAMICS G220 converter
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB 617