Siemens SINAMICS G120 Operations Instructions download pdf (Page 80)

Commissioning

4.5 Commissioning with STARTER

Inverter with CU240B-2 and CU240E-2 Control Units

78 Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB

4.5.5 Trace function for optimizing the drive

Description

The trace function is used for converter 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 by

. Alternatively,

you can also specify the measurement period and then you can 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 speed actual value.

Note

If you use the "record individual bits" or "mathematical functions" option, then this is

displayed under signal No. 9.

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Siemens SINAMICS G120 Operations Instructions Page 80