Parameter description
IDN P-0-0062 (Thermal motor model)
Time constant 1
Represents the thermal time constant of the motor (stator and housing). It can typically be taken from the motor manual.
Time constant 2
Represents the thermal time constant of the winding. In the case of Beckhoff motors, the value of this time constant exists both in the electronic name plate and in the motor data sets.
Partial fraction factor
Divides the thermal resistance.
Warning limit
The threshold value for a warning output can be set here. The warning allows a motor overload to be detected at an early stage. The user can react, for example, with an (automated) load adjustment.
The reaching of the warning limit can be read from S-0-0012 – Class 2 diagnostic (C2D) bit 2. A pending C2D error is also displayed in S-0-0135 Drive Status Word bit 12.
Error limit
The threshold value for the error reaction can be set here.
Error reaction
If the set threshold value (error limit) is reached, one of the following error reactions can be chosen:
No. | Error response |
|---|---|
0 | The motor model is inactive (no calculation) |
1 | The error FD17 is generated and the associated error reaction is activated (see AX5000 diagnostic messages) (Shut down on error level) |
2 | Reduction of the current to the S1 characteristic of the motor (Reduction to the S1 characteristic) |
IDN P-0-0063 (Thermal motor utilization)
The IDN contains the output value of the thermal motor model, which displays the utilization of the motor as a percentage.