Torque Monitoring - Siemens SINAMICS G120XA Operating Instructions Manual

Advanced commissioning
6.7 Drive protection
6.7.6.4

Torque monitoring

Function description
In applications with fans, pumps or compressors with the flow characteristic, the torque follows
the speed according to a specific characteristic. An insufficient torque for fans indicates that the
power transmission from the motor to the load is interrupted. For pumps, insufficient torque can
indicate a leakage or dry-running.
The converter monitors the torque based on the envelope curve depending on the speed
against a lower and upper torque.
If the torque lies in the impermissible range longer than time p2192, the converter reacts as
specified in p2181.
The monitoring is not active below speed threshold 1 and above speed threshold 3.
Parameters
Number
p2181[D]
p2182[D]
p2183[D]
p2184[D]
p2185[D]
p2186[D]
p2187[D]
p2188[D]
p2189[D]
p2190[D]
p2191[D]
p2192[D]
p2193[D]
314
Name
Load monitoring, response
Load monitoring, speed threshold 1
Load monitoring, speed threshold 2
Load monitoring, speed threshold 3
Load monitoring, torque threshold 1, upper
Load monitoring torque threshold 1, lower
Load monitoring torque threshold 2, upper
Load monitoring torque threshold 2, lower
Load monitoring torque threshold 3, upper
Load monitoring torque threshold 3, lower
Load monitoring torque threshold, no load
Load monitoring, delay time
Load monitoring configuration
Operating Instructions, 03/2019, FW V1.0, A5E44751205B AB
Factory setting
0
150 rpm
900 rpm
1500 rpm
10000000 Nm
0 Nm
10000000 Nm
0 Nm
10000000 Nm
0 Nm
0 Nm
10 s
1
SINAMICS G120XA converter