6.8.6.1
Stall protection
Function description
If the load of a standard induction motor exceeds the stall torque of the motor, the motor can
also stall during operation on the converter. A stalled motor is stationary and does not develop
sufficient torque to accelerate the load.
If the "Motor model fault signal stall detection" r1746 for the time p2178 is present via the "Motor
model error threshold stall detection" p1745, the converter signals "Motor stalled" and fault
F07902.
Parameters
Number
Name
Factory setting
r1408[0 … 14]
CO/BO: Status word, current controller
-
p1745[D]
Motor model error threshold stall detection
5%
r1746
Motor model fault signal stall detection
- %
p2178[D]
Motor stalled delay time
0.01 s
r2198
CO/BO: Status word monitoring functions 2
-
6.8.6.2
No-load monitoring
Function description
An inadequate motor current indicates an interruption in the power transmission from the motor
to the load.
If the motor current for the time p2180 lies below the current level p2179, the converter signals
"output load not available" and alarm A07929.
Parameters
Number
Name
Factory setting
r0068[0 … 1]
CO: Absolute actual current value
- Arms
p2179[D]
Output load detection current limit
0 Arms
p2180[D]
Output load detection delay time
2000 ms
r2197[0 … 13]
CO/BO: Status word monitoring functions 1
-
0
Q
Advanced commissioning
6.8 Drive protection
SINAMICS G120X converter
Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
417
