Siemens SINAMICS G120D - Optimize the Drive Using the Trace Function

Appendix
A.4 Handling STARTER
Converter with control units CU250D-2
346 Operating Instructions, 04/2014, FW V4.7, A5E34261542B AA
A.4.2
Optimize the drive using the trace function
Description
The trace function is used for inverter diagnostics and helps to optimize the behavior of the
drive. Start the function in the navigation bar using "... Control_Unit/Commissioning/Device
trace".
In two settings that are independent of one another, using
you can interconnect eight
signals each. Each signal that you interconnect is active as standard
You can start a measurement as often as required; the results are temporarily stored (until
you exit STARTER) under the "Measurements" tab, together with the date and time. When
terminating STARTER or under the "Measurements" tab, you can save the measurement
results in the *.trc format.
If you require more than two settings for your measurements, you can either save the
individual traces in the project or export them in the *.clg format – and if necessary, load or
import.
Recording
Recording is performed in a CU-dependent basic clock cycle. The maximum recording
duration depends on the number of recorded signals and the trace clock cycle.
You can extend the recording duration by increasing the trace clock cycle by multiplying with
an integer factor and then accepting the displayed maximum duration with
. Alternatively,
you can also specify the measurement period and then calculate the trace clock cycle of
STARTER using
.
Recording individual bits for bit parameters
You can record individual bits of a parameter (e.g. r0722) by allocating the relevant bit using
"bit track" (
).
Mathematical function
Using the mathematical function ( ) you can define a curve, for example the difference
between the speed setpoint and the actual speed value.
Note
If you use the "record individual bits" or "mathe
matical functions" option, then this is
displayed under signal No. 9.
Trigger
You can create your own start condition (trigger) for the trace. With the factory setting
(default setting) the trace starts as soon as you press the
button (Start Trace). Using the
button
, you can define another trigger to start the measurement.
Using pretrigger, set the time for the recording before the trigger is set. As a consequence,
the trigger condition traces itself.