Allen‑Bradley 20G11NC011AA0NNNNN AC Drive

파워플렉스 755 Air-Cooled AC 가변 주파수 드라이브 (VFD)

수명주기: 더 이상 사용되지 않음 (Last order date: 2024‑06‑30). Direct OEM replacement part number: 20G11NC011JA0NNNNN

Catalog Number Breakdown (20G Series Coding Rule)

20G 1 1 N C 011 에이 0 NNNNN

분절	암호	설명
1~3	20G	파워플렉스 755 air-cooled AC drive series
4	1	Embedded EtherNet/IP, 표준 보호, 강제 공랭
5	1	AC input with DC bus terminals
6	N	IP20 / IP00, Open Frame (NEMA Open Type)
7	기음	400V 삼상 (380~480VAC)
8~10	11	Rated output current 11.5A
11	에이	Integrated Dynamic Braking Transistor (DB Transistor)
12	0	No HIM keypad (blank)
13~17	NNNNN	No additional option modules

주요 전기 사양

정격전류: 11.5에이

전압 등급: 3-phase 400V AC

전력 등급:

ND (일반 근무): 5.5kW

HD (헤비 듀티): 4kW

프레임 크기: 액자 2

냉각: 강제 공냉

의사소통: Embedded EtherNet/IP (DLR ring support)

Dynamic Braking: Built-in DB transistor, external braking resistor required

인클로저 등급: IP20 (for cabinet mounting only)

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

일반적인 응용 분야

컨베이어, 팬, 슬리퍼, 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.

하드웨어 & 유지보수 노트
Obsolete notice: After discontinuation of AA0 suffix legacy units, JA0 is the drop-in compatible replacement. 장착 치수, I/O and program parameters are fully compatible for direct replacement.
옵션 액세서리: HIM keypad (20‑750‑HIM), input EMC filter, dynamic braking resistor, 세이프 토크 오프 (STO) 기준 치수.
Common failure points: Fan aging, DC bus capacitor degradation, ESD damage on EtherNet/IP port; for spare part replacement, prioritize OEM JA0 version.
Domestic Alternative Reference (Same rating 400V /11.5A VFD)

Inovance MD880, 다섯&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.

HS Code Reference

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

PowerFlex755 (20G11NC011AA0NNNNN) Power-On Commissioning Parameter List

해당되는: 400다섯, ND 5.5kW / HD 4kW, embedded EtherNet/IP, integrated braking transistor. 구조: 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

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

Pre-Power-On Hardware Check (Not parameters, mandatory before commissioning)
주회로: 3-phase input R/S/T, output U/V/W, DC bus, braking resistor wiring and earthing.
제어 회로: 24V control supply, STO safety terminals must be shorted (short required if no STO module, otherwise safety fault alarm).
Motor decoupling recommended: Disconnect mechanical load before initial autotune.
Rating verification: Drive rated 11.5A, match motor rated current.
Factory Reset (새 프로젝트 / After repair)

매개변수 번호.	English Name	Chinese Name	환경	비고
5	Reset To Default	恢复出厂	옵션>Factory Reset	Takes effect after power cycle; clears all custom parameters. Recommended for new commissioning.

Motor Nameplate Parameters (비판적인, enter from nameplate)

매개변수 번호.	English Name	Chinese Name	Example Value	비고
26	Motor NP FLA	电机额定电流	10.5에이	Motor full load current from nameplate, shall not exceed drive 11.5A
27	Motor NP Hertz	电机额定频率	50헤르츠	명판에서
28	Motor NP RPM	电机额定转速	1480RPM	명판에서
29	Mtr NP Pwr Units	电机功率单位	0=kW /1=HP	0=kilowatt
30	Motor NP Power	电机额定功率	5.5kW	명판에서
31	Motor NP Volts	电机额定电压	380다섯	명판에서

제어 모드 (TotalFORCE, for induction motors)

매개변수 번호.	English Name	Chinese Name	Recommended Setting	비고
35	Motor Cntl Mode	电机控制模式	2=Sensorless Vector	Preferred for fans/pumps/conveyors;
				use 3=Flux Vector for high precision torque control (encoder required)

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

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

매개변수 번호.	English Name	Chinese Name	환경	비고
160	Start Source	启动命令源	Port13 (Embedded EtherNet/IP)	Start/stop command from Logix controller
161	Speed Ref Source	速度给定源	Port13 (Embedded EtherNet/IP)	Speed reference from network

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

매개변수 번호.	English Name	Chinese Name	환경	비고
160	Start Source	启动命令源	디지털 입력 (DI Terminal)	Start/stop via DI terminals
161	Speed Ref Source	速度给定源	아날로그 입력 0 (AI0)	AI analog 0-10V /4-20mA reference
163	DI Run	数字输入 – 运行	DI0	DI0 = Run command
164	DI Stop	数字输入 – 停止	DI1	DI1 = Stop (normally closed for safety)

가속 / Decel & Limit Parameters

매개변수 번호.	English Name	Chinese Name	예	비고
53	Accel Time 1	加速时间 1	5.0에스	Extend for heavy load; 8~20s for fans/pumps
54	Decel Time 1	减速时间 1	5.0에스	Extend for high inertia loads; can shorten if braking resistor fitted
55	Max Freq	最大频率	50헤르츠	최대 작동 주파수, do not exceed motor nameplate
56	Min Freq	最小频率	0헤르츠	Minimum output frequency
57	Speed CLIP Hi	最高转速限幅	1480RPM	Matches motor rated speed

현재의 / Torque Protection Parameters

매개변수 번호.	English Name	Chinese Name	예	비고
42	Motor OL Current	电机过载保护电流	Motor nameplate FLA	Motor thermal protection, use nameplate value
44	Motor OL Select	电机过载保护模式	1=Class10	Class10 for standard induction motors; Class20 for heavy duty
47	Current Limit 1	电流限幅	11.5에이	Drive rated output current
49	Torque Limit Pos	正向转矩限幅	150%	기본 150%; reduce for hoist applications
50	Torque Limit Neg	反向转矩限幅	150%	Reverse torque limit

Motor Autotune (비판적인! Run after entering nameplate data)

매개변수 번호.	English Name	Chinese Name	작업	비고
70	Autotune	电机自整定	Static Tune 2	Motor decoupled from load before autotune.
				Static Tune: No motor rotation.
				Rotational Tune: Motor spins, higher accuracy for commissioning

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

Embedded EtherNet/IP Communication Parameters (Port13 Embedded Adapter)

매개변수 번호.	English Name	Chinese Name	환경	비고
36	부팅	BOOTP 模式	0=BOOTP Disabled	For static IP addressing
37	IP Address	IP 地址	192.168.1.10	Site planned IP address
38	Subnet Mask	子网掩码	255.255.255.0	Match subnet segment
39	Gateway	网关	192.168.1.1	Gateway address
84	Comm Flt Action	通讯丢失动作	0=Fault (Fault Trip)	Network break protection; optional 1=Coast, 2=Hold Speed
85	Idle Flt Action	控制器 Idle 动作	0=Fault	Drive action when PLC enters idle state

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

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

매개변수 번호.	English Name	Chinese Name	예	비고
100	DB Resistor Ohms	制动电阻阻值	Enter actual resistor value	Must match fitted external braking resistor
101	DB Resistor Power	制动电阻功率	Actual power rating
102	DB Level	制动投入电压	780다섯	Default for 400V class drives
103	DB Overload	制动电阻过载保护	Set per resistor selection

Auto Restart on Fault (선택 과목, safety hazard risk)

매개변수 번호.	English Name	Chinese Name	환경	비고
348	Auto Rstrt Tries	自动重启次数	0=Disabled	1~5 allowed for fans/conveyors; DO NOT enable for safety-critical machinery
349	Auto Rstrt Delay	重启延时	5에스	Delay between each fault restart attempt

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

매개변수 번호.	English Name	Chinese Name	목적
10	Output Freq	输出频率	Actual output frequency
11	DC Bus Volts	直流母线电压	Normal ~540~580V for 400V class
12	출력 전류	输出电流	Actual motor current
13	Motor Speed	电机转速	Estimated motor speed
220	Digital In Sts	数字输入状态	Diagnose DI terminal status

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