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Dc current test – Rockwell Automation 7000 PowerFlex Medium Voltage (B Frame) Commissioning - ForGe (PanelView 550) User Manual

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112

Rockwell Automation Publication 7000-IN006B-EN-P - May 2013

Chapter 5 Commissioning the Drive

Sample Waveforms

Sample waveforms captured on SCBL test points under Drive Not Running
Condition [Ch1: V2uv (red), Ch2: I2u (yellow)]

Figure 60 - Sample waveform: SCBL test points (drive not running)

DC Current Test

Perform DC Test.

Summary:

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

• 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).

• Label the waveforms as “Vdcr1”, and “Idc1”.
• Save the worksheet as “DC Test @ 0.3pu” (for AFE drives) or “DC Test @

0.7pu” (for 18-pulse drives).

Table 4 - Oscilloscope Settings

Oscilloscope

Time Base

Wave Form

Test-Point

Waveform
Label

Sheet Name

Chan. 1

2ms/div.

DC Link Voltage

Vdcr1

Vdcr1

DC Test

Chan. 2

DC Link Current

Idc1

Idc1