Allen‑Bradley 2080-LC20-20QBB 프로그래밍 가능 논리 컨트롤러

Catalog Code Breakdown

Native I/O Allocation (20 전철기)

입력: 12-point DC24V Digital Inputs

Terminals I-00~I-11, sinking/sourcing compatible (구성 가능)

출력: 8-point DC24V NPN Transistor Outputs

Terminals O-00~O-07, NPN transistor type. AC loads cannot be driven directly.

⚠️ Distinction:

2080-LC20-20QBB = NPN transistor output

2080-LC20-20QBBR = Relay output version

주요 기술 사양

1. 전원공급장치: 24 VDC (작동 범위:18~30 VDC)
2. 프로그램 메모리: 10K instructions
3. Variable Memory: 10K bytes
4. 통신 인터페이스

USB (programming port)

Embedded RS485 (Modbus RTU Master/Slave)

5. 확장 기능

✅ Supports Micro800 plug-in modules (아날로그 입출력, RTD/TC, high-speed counter, serial modules)

✅ Maximum 4 plug-in modules can be installed

6. High-speed Functions

4-channel High-Speed Counter (HSC), 최대. 100kHz

4-channel Pulse Train Output (PTO), 최대. 100kHz for basic positioning control

7. 환경 등급

작동 온도: 0 ~ 55 ℃

보관온도: -40 ~ 85 ℃

보호 등급: IP20, cabinet mounting only

소프트웨어 요구사항

프로그래밍 소프트웨어: Connected Components Workbench (CCW)

Minimum supported version: CCW V8.0 and above

일반적인 응용 분야

Small conveying equipment, 포장 기계, 팬 & 펌프 제어, custom automated tooling, HVAC 제어, basic stepper/servo positioning systems.

선택 지침 & Common Pitfalls

1. NPN sinking transistor output: Load negative wire connects to PLC output terminal; AC loads cannot be driven directly. Use DC24V solenoid valves preferentially.
2. 내장 이더넷 포트 없음! Ethernet communication requires additional Ethernet plug-in module (예를 들어. 2080-EWEB).
3. Freewheeling diodes are recommended for inductive loads to avoid transistor breakdown caused by back EMF.
4. Micro820 does not support remote I/O, only local plug-in expansion available.

직접 교체 & 시리즈 비교

Same I/O count relay variant: 2080-LC20-20QBBR

Higher I/O capacity: Upgrade to Micro830 (2080-LC30 series)

Complete Reference for 2080-LC20-20QBB

(Terminal Wiring + Modbus RTU Configuration + PTO Program + 문제 해결 + HS코드)

1. Hardware Terminal Definition & 배선 가이드

모델: Micro820 2080-LC20-20QBB

전원공급장치: DC24V; 에서:12-channel DC24V; ~하다:8-channel NPN Sinking Transistor Output

⚠️ Embedded serial port: Shared RS485/RS232 without galvanic isolation

1.1 전원 단자 (PLC Main Power)

1.2 Digital Input Terminals (12 에서: 나-00 ~ I-11)

공통단자: CM0

Sinking Wiring (가장 일반적인): CM0 connected to DC24V+; NPN sensor output to I-xx; sensor negative to 0V

Sourcing Wiring: CM0 connected to 0V; PNP sensor output to I-xx; sensor positive to DC24V

나-00, 나-01, 나-02, 나-03: Dedicated high-speed counter channels

DI Terminal List:

나-00, 나-01, 나-02, 나-03, 나-04, 나-05, 나-06, 나-07, 나-08, 나-09, I-10, I-11

1.3 Digital Output Terminals (8 DO O-00 ~ O-07, NPN)

공통단자: -CM0

✅ NPN Sinking characteristic: Terminal O-xx approximates 0V when energized

Standard Wiring Scheme:

+DC24V → Load positive terminal; Load negative terminal → O-xx; All -CM0 terminals tied to DC24V 0V

영형-00, 영형-01: PTO pulse output channels (고속)

Freewheeling diode must be reverse-paralleled for inductive loads (솔레노이드 밸브)

DO Terminal List: 영형-00, 영형-01, 영형-02, 영형-03, 영형-04, 영형-05, 영형-06, 영형-07

1.4 Embedded RS485/RS232 Serial Terminal (6-pin terminal block)

RS485 Wiring: Pin7(비) ↔ Device B terminal; Pin8(에이) ↔ Device A terminal; Pin6 shared ground

❗ No galvanic isolation on this port. Install isolated repeater for long-distance communication.

2. Step-by-step CCW Modbus RTU Configuration (Master/Slave Supported)

소프트웨어: Connected Components Workbench CCW V8.0 and above

Step1: Project Hardware Configuration

1. Create new project → Select controller 2080-LC20-20QBB
2. Double-click [제어 장치] on left pane to open configuration page → Locate [Serial Port]
3. Driver selection: 모드버스 RTU

Step2: 통신 매개변수 (Recommended Defaults)

Step3: Register Mapping (Critical Section)

Modbus address mapping rule for Micro820

Coils (0x addresses): PLC BOOL variables

Discrete Inputs (1x addresses): Read-only BOOL status

Holding Registers (4x addresses): INT/DINT (Read & Write, 가장 널리 사용되는)

Input Registers (3x addresses): Read-only INT values

중요사항: Micro800 series does not support automatic tag mapping for Modbus. Use function blocks for master read/write operations:

`MODBUS_READ` / `MODBUS_WRITE`

3. PTO Pulse Positioning Control (O0/O1 Pulse Output for Stepper/Servo)

Hardware Channel Assignment

PTO0: Pulse Output → O-00; Direction signal recommended on O-02

PTO1: Pulse Output → O-01; Direction signal recommended on O-03

Max output frequency: 100kHz

Output type is NPN sinking. Servo drive pulse input setting must be low-level active / sinking input

CCW Configuration Workflow

1. Controller Configuration → Enable [펄스 출력 (PTO0)]
2. Set maximum frequency: 100000 헤르츠; Acceleration/Deceleration time: 500ms
3. Call motion function block `PTO_RUN` inside program

Structured Text Example: Relative Positioning

⚠️ Critical Limitation: Micro820 does not support electronic cam or multi-axis synchronization; only basic point-to-point positioning available.

4. 고속카운터 (HSC) 구성 (I0~I3)

4 independent HSC channels, support single-phase input & quadrature encoder with 4x multiplication

Common operation modes:

Mode0: Single-phase up-counting

Mode4: Quadrature encoder, 4x frequency multiplication mode

5. 배선 & Selection Hard Rules (Risk Avoidance)
6. 2080-LC20-20QBB = NPN sinking output. AC loads cannot be driven directly. Add intermediate relays for AC loads.
7. Do not overload transistor outputs continuously: 0.3A per point maximum (ambient temperature 55℃)
8. RS485 port non-isolated. Communication errors easily occur under multi-ground power supply systems; implement shared ground or galvanic isolation.
9. No native Ethernet port. Install plug-in module 2080-EWEB if Ethernet connection is required.
10. Maximum 4 plug-in modules supported. Remote I/O expansion is not available.
11. Use shielded cables for pulse wiring; route away from power cables of contactors and inverters to reduce interference.
12. HS Code Reference for Import & Export Customs Declaration

8537101100

설명: 프로그래밍 가능 논리 컨트롤러 (PLC)

⚠️ Reference only. Confirm classification with local customs authority before formal customs clearance.

7. 일반적인 오류 문제 해결 매트릭스

8. Official Manual Reference

사용설명서: 2080-UM005E-EN-E (Micro820 Controller User Manual)

Allen‑Bradley 2080-LC20-20QBB (Micro820) Programmable Controller Overview

1. 제품 포지셔닝

2080-LC20-20QBB is an Allen‑Bradley Micro820 compact integrated PLC manufactured by Rockwell Automation. Designed for standalone OEM machinery and small complete automation systems. It replaces conventional control circuits built with massive intermediate relays. Equipped with integrated digital & analog I/O and multiple communication ports, DIN 레일 장착 가능. Target market: 콤팩트, low-cost standalone automation solutions.

Catalog Summary

2080: Micro800 series identifier

LC20: Micro820 controller platform

20: 20 native I/O points

큐: 24V DC sourcing (PNP) 디지털 출력

BB: Onboard 4 아날로그 입력 +1 아날로그 출력, PTO pulse output, embedded Ethernet

2. Native Hardware I/O Specifications
3. 디지털 입력:12-포인트 DC24V (configurable sinking/sourcing)

신호 획득: Photoelectric sensors, proximity switches, 리미트 스위치, start/stop pushbuttons, 비상 정지, door interlock switches

2. 디지털 출력:7-point DC24V PNP sourcing output

Drive small solenoid valves, indicator lamps, 중간 릴레이 (예를 들어. MY2N-GS), 접촉기 코일

3. Integrated Analog Channels (핵심 이점)

4 아날로그 입력: 0~10V, 0~20mA, thermistor temperature acquisition supported

1 아날로그 출력: 0~10V / 0~20mA, used for inverter speed regulation and modulating valve control

4. Motion Control Functions

내장 1 channel PTO/PWM pulse output, capable of driving stepper motor controllers for basic point positioning

5. 확장 용량: 2 plug-in slots for high-speed counters, serial ports and additional I/O modules
6. 핵심 기능

3.1 Discrete Logic Control (기본 기능)

Based on signals from sensors and operation buttons, execute programmed sequence, 연동, mutual lock and start-stop logic:

Sequential start/stop of conveyors, automatic cylinder cycling, automatic machine workflows, safety loop judgment and fault alarm output.

Can be paired with MY2N-GS intermediate relays to drive high-power loads indirectly.

3.2 Analog Process Control (Advantage of Onboard Analog Channels)

Collect temperature, 압력, liquid level and flow signals from transducers

Built-in PID function: Constant temperature control, constant pressure water supply, air volume regulation; Analog output to adjust inverter speed and proportional valves.

3.3 High-speed Signal Processing

High-speed counters read encoder pulses (속도 & position measurement); PTO pulses implement basic stepper positioning.

3.4 Communication Networking

1. EtherNet/IP Ethernet Port

Connect HMI touchscreens, SCADA host computers and other Rockwell PLCs for remote monitoring, parameter access and program upload/download.

2. RS232/RS485 (Non-isolated Serial Port)

Modbus RTU Master/Slave interface to connect inverters, instruments and third-party sensors.

3. USB Programming Port: Direct connection to PC for program download and online debugging.

3.5 데이터 저장, Recipe & Log Management

Embedded RTC real-time clock: Timed tasks, timestamp for fault logging

MicroSD card slot: Store production recipes, runtime logs, 결함 기록; support program backup & one-click restore.

3.6 HMI Expansion

Supports external remote text display 2080‑REMLCD, enabling parameter modification and alarm display without additional touchscreen panels.

4. Typical Industries & 장비
5. 포장기계: Small sealers, 라벨러, 충전물 기계, miniature sorting conveyor systems
6. 공조 & 수처리: Small pump stations, 공기조화장치, constant temperature water tanks, 화학 투약 시스템
7. 식품기계 & Central Kitchen Equipment: Washing lines, material conveyors, temperature-controlled ovens, smoke exhaust control systems
8. Custom Automation: Assembly tooling, 테스트 벤치, small transfer equipment
9. Auxiliary control for machine tools, 재료 운반 라인
10. Laboratory equipment, small constant-temperature aging equipment
11. 프로그래밍 소프트웨어

프로그래밍 소프트웨어: Connected Components Workbench (CCW)

지원되는 언어: 래더 다이어그램 (LD), 기능 블록 다이어그램 (FBD), 구조화된 텍스트 (성), compliant with IEC61131‑3

6. Application Boundaries

✅ Suitable for: Standalone machines with limited I/O, analog acquisition/PID demand, Ethernet networking requirement, cost-sensitive OEM equipment

❌ Not suitable for: Multi-axis servo synchronization, large-scale distributed production lines, massive remote I/O, high safety-level safety circuits (install dedicated safety relays such as G9SX for safety functions)

Supplement Remarks

1. Terminology strictly follows Rockwell Automation official datasheet standards, suitable for export tender documents, equipment manuals and overseas product catalogs;
2. Consistent industrial automation vocabulary matching international engineering conventions;
3. If you need Russian translation or condensed datasheet version, I can process further.