Specification Of Known Speed Parameters - Siemens SIWAREX WT241 Manual

Communication
11.5 Calibration procedure
Step 3 (only for systems without speed sensor)
Following successful zero and span calibrations, you can additionally record and store a
speed correction with loaded belt during operation (commands "Start speed measurement
"belt loaded"" (72) and "Stop speed measurement "belt loaded"" (73)). A coarse load
characteristic of the drive can be recorded in this manner. Import using the command "Apply
speed parameters "belt loaded"" (86).
11.5.3

Specification of known speed parameters

Calibration of the speed as described above is always recommended. This guarantees
maximum accuracy for the speed calculation and thus maximum accuracy of the complete
system.
If it is not possible to calculate the speed or pulse constant, you can also enter the data
manually.
● When using a speed sensor at DI.0, you must enter the following parameters manually:
– DR3 → design speed = maximum speed of belt
– DR3 → belt revolution pulses = total belt length x pulse constant of sensor
● When operating without a sensor, you must enter the following parameters manually:
– DR3 → design speed = maximum speed of belt
● With an external speed input via DR19, you must enter the following parameters
manually:
– DR3 → design speed = maximum speed of belt
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SIWAREX WT241
Manual, 05/2015, A5E36046748A