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Dc current test, Summary – Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C-Frame) - ForGe Control User Manual

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258

Rockwell Automation Publication 7000L-UM301D-EN-P - June 2014

Chapter 4

Commissioning

DC Current Test

Perform DC Test. Refer to the commissioning section of the PowerFlex 7000
user manual for a more detailed procedure.

Summary:

1.

Make sure the Diagnostic Trend has been setup and is armed.

2.

Run the DC Test with Idc Command Test (P119) set to 0.1pu. Increase
Idc Command Test from 0.1  0.3pu (for AFE drives) or from
0.1  0.7pu (for 18 Pulse drives) in steps of 0.1pu. At each step, verify
DC link current regulation by monitoring Idc Error (P323) and Alpha
Line (P327).

3.

Capture DC link voltage waveform at ACB test point “Vdcr1” and DC
link current waveform at ACB test point “Idc1” at 0.3pu (for AFE drives)
or at 0.7pu (for 18 Pulse drives).

4.

Label the waveforms as “Vdcr1”, and “Idc1”.

5.

Save the worksheet as “DC Test @ 0.3pu” (for AFE drives) or “DC Test @
0.7pu” (for 18 Pulse drives).

Table 15 - Oscilloscope Setting

Figure 215 - Sample Waveforms:

Sample waveforms of DC Test recorded on a AFE Drive
Idc Cmd Test = 0.2pu [Ch1- Vdcr1 (yellow) Ch2 – Idc1 (blue) at ACB test points]

Oscilloscope

Time Base

Waveform

Test-Point

Waveform
Label

Sheet Name

Ch. 1

2ms/div.

DC Link Voltage

Vdcr1

Vdcr1

DC Test

Ch. 2

DC Link Current

Idc1

Idc1