Allen‑Bradley 20G11NC011AA0NNNNN AC Drive

PowerFlex 755 Air-Cooled AC Unidade de frequência variável (VFD)

Vida útil: Obsoleto (Last order date: 2024‑06‑30). Direct OEM replacement part number: 20G11NC011JA0NNNNN

1. Catalog Number Breakdown (20G Series Coding Rule)

20G 1 1 N C 011 UM 0 NNNNN

2. Principais especificações elétricas

Corrente nominal: 11.5UM

Classe de tensão: 3-phase 400V AC

Classificação de potência:

DE (Dever normal): 5.5kW

alta definição (Serviço Pesado): 4kW

Tamanho do quadro: Quadro 2

Resfriamento: Resfriamento por ar forçado

Comunicação: Embedded EtherNet/IP (DLR ring support)

Dynamic Braking: Built-in DB transistor, resistor de frenagem externo necessário

Classificação do gabinete: IP20 (for cabinet mounting only)

Entrada: AC main circuit with brought-out DC bus terminals, suitable for common DC bus applications

3. Aplicações Típicas

Transportadores, fãs, bombas, extruders and general-purpose industrial motor speed control; supports multi-axis EtherNet/IP motion control and can share the same network with Kinetix servo drives.

4. Hardware & Notas de manutenção
5. Obsolete notice: After discontinuation of AA0 suffix legacy units, JA0 is the drop-in compatible replacement. Dimensões de montagem, I/O and program parameters are fully compatible for direct replacement.
6. Acessórios opcionais: HIM keypad (20‑750‑HIM), input EMC filter, dynamic braking resistor, Torque seguro desativado (STO) módulo.
7. Common failure points: Fan aging, DC bus capacitor degradation, ESD damage on EtherNet/IP port; for spare part replacement, prioritize OEM JA0 version.
8. Referência Alternativa Doméstica (Same rating 400V /11.5A VFD)

Inovação MD880, V&T AC800, Xinje DS500. Hardware replacement is feasible, but communication program, parameter groups and terminal definitions require re-commissioning. Cannot directly inherit the original Rockwell EtherNet/IP motion link.

6. Referência do Código HS

8504409990 (Other static converters, general classification for VFDs. Final customs classification subject to local customs authority.)

PowerFlex755 (20G11NC011AA0NNNNN) Power-On Commissioning Parameter List

Aplicável: 400V, ND 5.5kW / HD 4kW, embedded EtherNet/IP, integrated braking transistor. Estrutura: Pre-power-on inspection → Factory reset → Motor nameplate data → Control mode → Start / Speed reference source → Accel/Decel & limits & protection → Autotune → EtherNet/IP communication → Dynamic braking & fault strategy → Monitoring parameters

Observação: Parameter numbers refer to Port0 (drive native parameters). Actual values from motor nameplate must be entered on site. Italic values below are examples.

1. Pre-Power-On Hardware Check (Not parameters, mandatory before commissioning)
2. Circuito principal: 3-phase input R/S/T, output U/V/W, DC bus, braking resistor wiring and earthing.
3. Circuito de controle: 24Alimentação de controle V, STO safety terminals must be shorted (short required if no STO module, otherwise safety fault alarm).
4. Motor decoupling recommended: Disconnect mechanical load before initial autotune.
5. Rating verification: Drive rated 11.5A, match motor rated current.
6. Redefinição de fábrica (Novo projeto / After repair)

3. Motor Nameplate Parameters (Crítico, enter from nameplate)

4. Modo de controle (TotalFORCE, for induction motors)

5. Command Source & Speed Reference Source (Select ONE: Terminal Control / EtherNet/IP Network Control)

Opção A: EtherNet/IP Network Control (Built-in port standard on this unit, most common for projects)

Opção B: Local Terminal Control (Commissioning test / Standalone test)

6. Accel / Decel & Limit Parameters

7. Atual / Torque Protection Parameters

8. Motor Autotune (Crítico! Run after entering nameplate data)

After successful autotune, parameter 70 automatically returns to Ready 0. If autotune fails, verifique a fiação, nameplate entries and short-circuit to earth.

9. Embedded EtherNet/IP Communication Parameters (Port13 Embedded Adapter)

Hardware DIP switch: All DIPs set to 0 to allow software-configured IP. If DIPs are non-zero, IP is determined by hardware switches.

10. Dynamic Braking Parameters (A suffix = integrated DB transistor on this model)

11. Auto Restart on Fault (Opcional, safety hazard risk)

12. Read-only Monitoring Parameters (For observation only, no write)

13. Standard Commissioning Procedure
14. Power off → Factory reset parameters → Apply power
15. Enter all motor nameplate parameters
16. Configure control mode, command source and reference source
17. Set accel/decel, limits and overload protection
18. Run motor autotune with load decoupled, confirm autotune success
19. Ethernet/IP: Set IP address, download PLC project, establish I/O connection
20. No-load jog test, verify rotation direction, current and speed
21. Loaded trial run, fine-tune accel/decel and torque limits
22. Save parameters to drive (backup de parâmetros), export via Studio5000
23. Record and archive full parameter set
24. Common Commissioning Pitfalls
25. STO safety terminals: 20G11NC011AA0NNNNN has no STO module; STO jumpers on control board must be shorted, otherwise safety fault on power-up.
26. Autotune fault: Check for open 3-phase motor wiring, nameplate data entry and earth short circuit.
27. Replacement 20G11NC011AA0NNNNN → 20G11NC011JA0NNNNN: Parameters can be uploaded/downloaded directly, nearly fully compatible; only verify firmware version.

4. High inertia loads: Extend deceleration time or select higher rated braking resistor