Rockwell Automation Publication 20Y-TG002C-EN-P - April 2017
79
Precharge Component Section
Chapter 6
Replace the Precharge
Bridge
1. Remove power from the AFE.
See
Remove Power from the AFE on page 37
.
2. Open the power structure enclosure door.
3. If present, remove the protective barriers.
Remove AFE Protective Barriers on page 44
.
4. Remove the protective front covers and terminal covers from the power
Remove Protective Covers from the Power Structure on page 47
.
5. Remove the four POZIDRIVE screws that secure the bridge protective
cover.
6. Remove the bridge protective cover.
7. Before removal, note the locations of the DC+, DC–, L1, L2, and L3
wires, and then disconnect these wires.
8. Remove the precharge bridge mounting nuts.
9. Remove and appropriately discard the old precharge bridge.
10. Install the new precharge bridge in reverse order of removal. See
Test the Precharge Resistor
To test the precharge resistor, follow these steps.
1. Remove power from the AFE.
See
Remove Power from the AFE on page 4-37
2. Open the LCL filter enclosure door.
3. If present, remove the protective barriers.
Remove AFE Protective Barriers on page 4-44
.
4. Measure the resistance between the following two points with an
ohmmeter:
• Between the (+) side of the precharge resistor R6.1 and the (+)
terminal on the TB of the precharge circuit.
• Between the (–) side of the precharge resistor R6.2 and the (–)
terminal on the TB of the precharge circuit.
IMPORTANT
This measurement applies to an AFE in either an IP20 2500 MCC
Style enclosure or an AFE in an IP21 Rittal enclosure.
IMPORTANT
This measurement only applies to an AFE in an IP21 Rittal enclosure.
Содержание Allen-Bradley PowerFlex 700AFE
Страница 10: ...10 Rockwell Automation Publication 20Y TG002C EN P April 2017 Preface Notes ...
Страница 18: ...18 Rockwell Automation Publication 20Y TG002C EN P April 2017 Chapter 1 Troubleshooting and Error Codes Notes ...
Страница 26: ...26 Rockwell Automation Publication 20Y TG002C EN P April 2017 Chapter 2 Active Front End System Overview Notes ...
Страница 82: ...82 Rockwell Automation Publication 20Y TG002C EN P April 2017 Chapter 6 Precharge Component Section Notes ...
Страница 92: ...92 Rockwell Automation Publication 20Y TG002C EN P April 2017 Chapter 7 LCL Filter Component Section Notes ...
Страница 96: ...96 Rockwell Automation Publication 20Y TG002C EN P April 2017 Chapter 8 DC Fuses Component Section Notes ...
Страница 100: ...100 Rockwell Automation Publication 20Y TG002C EN P April 2017 Appendix A Service Tools and Equipment Notes ...
Страница 128: ...128 Rockwell Automation Publication 20Y TG002C EN P April 2017 Appendix C Connector Descriptions Notes ...
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