Siemens SINAMICS G110M - Torque Monitoring

8.27.3 Torque monitoring
Function description
In applications with fans, pumps or compressors with the 󹪞ow characteristic, the torque follows
the speed according to a speci󹪝c characteristic. An insu󹪟cient torque for fans indicates that the
power transmission from the motor to the load is interrupted. For pumps, insu󹪟cient 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@
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6SHHGWKUHVKROGSSPD[LPXPVSHHG
7RUTXHWKUHVKROGORZHUS
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7RUTXHWKUHVKROGORZHUS
7RUTXHWKUHVKROGXSSHUS
7RUTXHWKUHVKROGORZHUS
7RUTXHWKUHVKROGXSSHUS
7RUTXH>1P@
If the torque lies in the impermissible range longer than time p2192, the converter reacts as
speci󹪝ed in p2181.
The monitoring is not active below speed threshold 1 and above speed threshold 3.
Setting monitoring
1. Operate the drive at three di󹪜erent 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.
❒
Parameter
Number Name Factory setting
r0031 Torque actual value, smoothed -
p2181[D] Load monitoring, response 0
p2182[D] Load monitoring, speed threshold 1 150 rpm
p2183[D] Load monitoring, speed threshold 2 900 rpm
p2184[D] Load monitoring, speed threshold 3 1500 rpm
Advanced commissioning
8.27 Monitoring the driven load
Distributed converter for SIMOGEAR geared motors
332 Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL