Allen-Bradley 2080-LC20-20QBB プログラマブル ロジック コントローラー

Catalog Code Breakdown

Native I/O Allocation (20 ポイント)

入力: 12-point DC24V Digital Inputs

Terminals I-00~I-11, sinking/sourcing compatible (設定可能)

出力: 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

主要な技術仕様

1. 電源: 24 VDC (operating range:18～30 VDC)
2. プログラムメモリ: 10K instructions
3. Variable Memory: 10K bytes
4. 通信インターフェース

USB (programming port)

Embedded RS485 (Modbus RTU Master/Slave)

5. 拡張機能

✅ Supports Micro800 plug-in modules (アナログI/O, 測温抵抗体/TC, high-speed counter, serial modules)

✅ Maximum 4 plug-in modules can be installed

6. High-speed Functions

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

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

7. 環境評価

動作温度: 0 ～ 55 ℃

保管温度: -40 ～ 85 ℃

保護クラス: IP20, cabinet mounting only

Software Requirement

プログラミングソフトウェア: Connected Components Workbench (CCW)

Minimum supported version: CCW V8.0 and above

代表的な用途

Small conveying equipment, 包装機, ファン & ポンプ制御, custom automated tooling, HVAC control, basic stepper/servo positioning systems.

選定ガイドライン & 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. No built-in Ethernet port! Ethernet communication requires additional Ethernet plug-in module (例えば. 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.

直接交換 & シリーズ比較

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 + トラブルシューティング + HSコード)

1. Hardware Terminal Definition & 配線ガイド

モデル: Micro820 2080-LC20-20QBB

電源: DC24V; から:12-channel DC24V; する:8-channel NPN Sinking Transistor Output

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

1.1 電源端子 (PLC Main Power)

1.2 Digital Input Terminals (12 から: 私-00 ~ I-11)

コモン端子: CM0

Sinking Wiring (最も一般的な): 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

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

DI Terminal List:

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

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

コモン端子: -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

○-00, ○-01: PTO pulse output channels (高速)

Freewheeling diode must be reverse-paralleled for inductive loads (電磁弁)

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

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

RS485 Wiring: Pin7(B) ↔ Device B terminal; Pin8(あ) ↔ 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)

ソフトウェア: Connected Components Workbench CCW V8.0 and above

Step1: Project Hardware Configuration

1. Create new project → Select controller 2080-LC20-20QBB
2. Double-click [コントローラ] on left pane to open configuration page → Locate [Serial Port]
3. Driver selection: Modbus RTU

Step2: 通信パラメータ (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, 最も広く使用されている)

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

重要な注意事項: 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 / シンク入力

CCW Configuration Workflow

1. Controller Configuration → Enable [パルス出力 (PTO0)]
2. Set maximum frequency: 100000 Hz; 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. High-Speed Counter (HSC) 構成 (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. 配線 & 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. 最大 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

説明: プログラマブルロジックコントローラー (PLC)

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

7. 一般的な障害のトラブルシューティング マトリックス

8. Official Manual Reference

ユーザーマニュアル: 2080-UM005E-EN-E (Micro820 Controller User Manual)

Allen‑Bradley 2080-LC20-20QBB (マイクロ820) Programmable Controller Overview

1. 製品のポジショニング

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レール取付可能. Target market: コンパクト, low-cost standalone automation solutions.

Catalog Summary

2080: Micro800 series identifier

LC20: Micro820 controller platform

20: 20 native I/O points

Q: 24V DC sourcing (PNP) デジタル出力

BB: Onboard 4 アナログ入力 +1 アナログ出力, PTO pulse output, embedded Ethernet

2. Native Hardware I/O Specifications
3. デジタル入力:12-ポイント DC24V (configurable sinking/sourcing)

Signal acquisition: Photoelectric sensors, proximity switches, リミットスイッチ, start/stop pushbuttons, 非常停止, door interlock switches

2. デジタル出力:7-point DC24V PNP sourcing output

Drive small solenoid valves, indicator lamps, 中間リレー (例えば. MY2N-GS), 接触器コイル

3. Integrated Analog Channels (コアアドバンテージ)

4 アナログ入力: 0～10V, 0～20mA, thermistor temperature acquisition supported

1 アナログ出力: 0～10V / 0～20mA, used for inverter speed regulation and modulating valve control

4. Motion Control Functions

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

5. 拡張容量: 2 plug-in slots for high-speed counters, serial ports and additional I/O modules
6. コア機能

3.1 Discrete Logic Control (基本機能)

Based on signals from sensors and operation buttons, execute programmed sequence, インターロック, 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, プレッシャー, liquid level and flow signals from transducers

Built-in PID function: Constant temperature control, 定圧給水, air volume regulation; Analog output to adjust inverter speed and proportional valves.

3.3 High-speed Signal Processing

High-speed counters read encoder pulses (スピード & 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 データストレージ, Recipe & Log Management

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

MicroSD card slot: Store production recipes, runtime logs, 障害記録; 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. 代表的な産業 & 装置
5. 包装機械: Small sealers, ラベラー, 充填機, miniature sorting conveyor systems
6. 空調設備 & 水処理: Small pump stations, エアハンドリングユニット, constant temperature water tanks, chemical dosing systems
7. Food Machinery & Central Kitchen Equipment: Washing lines, material conveyors, temperature-controlled ovens, smoke exhaust control systems
8. Custom Automation: Assembly tooling, テストベンチ, small transfer equipment
9. Auxiliary control for machine tools, 材料搬送ライン
10. Laboratory equipment, small constant-temperature aging equipment
11. プログラミングソフトウェア

プログラミングソフトウェア: Connected Components Workbench (CCW)

サポートされている言語: ラダー図 (LD), 機能ブロック図 (FBD), Structured Text (ST), 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.