Rockwell-automation 7000 PowerFlex Medium Voltage (B Frame) Commission Manual de usuario descargar pdf (Pagina 118)

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

Chapter 5 Commissioning the Drive

Load Test

After autotuning of the drive, run the motor on load and capture the following

waveforms at 50% load and at 100% load. If the system is not ready for 100% load

test, then capture the waveforms at the max load you are allowed to run the drive

at. Also, print variables at 50% and 100% load points. Before printing variables

make sure the drive Access Level is at SERVICE.

• Capture line voltage & current waveforms at ACB test points “V2uv” &

“I2u”.

• Label the waveforms as “V2uv” and “I2u”.

• Capture motor voltage & current waveforms at ACB test points “Vuv” &

“Iu”

• Label the waveforms as “Vuv” and “Iu”.

• Save the worksheet as “Line and Load Voltage and Current Waveforms at

1048 rpm, 31 A”, for example.

Table 5 - Oscilloscope Settings

Sample Waveforms

Sample waveforms recorded on PWM drive running at full load (Ch1: Line

Voltage, Ch2 - Line Current, Ch3 - Motor Voltage, Ch4 - Motor Current)

Figure 63 - Sample waveform: PWM drive under full load condition

Oscilloscope Time Base Wave Form Test-Point Waveform

Label

Sheet Name

Chan. 1

10ms/div.

Line Voltage V2uv V2uv

{see above]

Chan. 2 Line Current I2u I2u

Chan. 3 Motor Voltage Vuv Vuv

Chan. 4 Motor Current Iu Iu

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Rockwell-automation 7000 PowerFlex Medium Voltage (B Frame) Commission Manual de usuario Pagina 118