7.27.3 Torque monitoring
Function description
In applications with fans, pumps or compressors with the ow characteristic, the torque
follows the speed according to a specic characteristic. An insucient torque for fans
indicates that the power transmission from the motor to the load is interrupted. For pumps,
insucient 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.
6SHHG>USP@
SVSHHGWKUHVKROG
6SHHGWKUHVKROGS
6SHHGWKUHVKROGSSPD[LPXPVSHHG
7RUTXHWKUHVKROGORZHUS
7RUTXHWKUHVKROGXSSHUS
7RUTXHWKUHVKROGORZHUS
7RUTXHWKUHVKROGXSSHUS
7RUTXHWKUHVKROGORZHUS
7RUTXHWKUHVKROGXSSHUS
7RUTXH>1P@
If the torque lies in the impermissible range longer than time p2192, the converter reacts as
specied in p2181.
The monitoring is not active below speed threshold 1 and above speed threshold 3.
Setting monitoring
1. Operate the drive at three dierent 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.
❒
Advanced commissioning
7.27Monitoring the driven load
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA 329
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