Torque Monitoring - Siemens SINAMICS G110M Operating Instructions Manual

Advanced commissioning
8.27 Monitoring the driven load
8.27.3

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.
❒
Parameter
Number
r0031
p2181[D]
p2182[D]
p2183[D]
p2184[D]
332
Name
Torque actual value, smoothed
Load monitoring, response
Load monitoring, speed threshold 1
Load monitoring, speed threshold 2
Load monitoring, speed threshold 3
Operating Instructions, 10/2020, FW V4.7 SP13, A5E31298649B AL
Factory setting
-
0
150 rpm
900 rpm
1500 rpm
Distributed converter for SIMOGEAR geared motors