Torque Monitoring - Siemens SINAMICS G115D Operating Instructions Manual

7.27.3

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.
Setting monitoring
1. Operate the drive at three different speeds in succession.
2. Set the speed thresholds p2182 ... p2184 to the respective values.
3. Set the torque thresholds for each speed.
The converter displays the current torque in r0031.
4. Set p2193 = 1.
You have now set monitoring.
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SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
Advanced commissioning
7.27 Monitoring the driven load
329