ABB AU3048B Display & 操作パネル

モデル：AU3048B

Official Classification：Display Operation Panel (スペアパーツ)

Compatible Device：ABB TTF300 Series Field-Mount Temperature Transmitter, Built-in Circular Display Module

⚠️ Important Note: Misleading information online. AU3048B is NOT a MOSFET, it is an LCD display unit dedicated for temperature transmitters.

機能

1. Circular embedded structure, installed directly inside the housing of TTF300 transmitter
2. Equipped with LCD screen + 4 push-buttons
3. 機能: On-site reading of temperature measurement values, パラメータ設定, zero calibration, fault code retrieval
4. コミュニケーション: Connected to transmitter mainboard via internal bus; no external terminals

重要な情報

Standard Order Description: AU3048B, Display for TTF300

応用: Field replacement spare part; used when original panel blackouts or buttons fail

互換性: Only fits ABB TTF300. Not interchangeable with FEP, FXE, Deltapilot and other instrument series

Supply Note: Original OEM spare part; no domestic compatible alternatives available

Typical Fault Symptoms (Display Unit Failure)

LCD no backlight / black screen, while transmitter 4–20mA output remains normal

Buttons unresponsive; unable to access parameter menu

Screen distortion, incomplete character display

Procurement Verification Suggestion

Confirm transmitter model marked on nameplate is TTF300 before ordering.

Do not place orders if the model does not match; interface and communication protocol are incompatible.

Complete Technical Specification Document for ABB AU3048B

⚠️ Important Clarification: Multiple online sources mistakenly label AU3048B as power MOSFET.

AU3048B is original ABB spare part, full name: Display Unit AU3048B, Type B LCD Operation Display for TTF300 Temperature Transmitter

1. Basic Part Information
2. モデル: AU3048B
3. Official Description: Display for TTF300 (LCD Operation Display Unit Type B for TTF300 Transmitter)
4. 製品カテゴリー: ABB Measurement Instrument Spare Parts
5. Compatible Host: Only compatible with ABB TTF300 / TTF300-N Field-Mount Temperature Transmitter

❌ Incompatible with TTF200, FEP, FXE, Deltapilot and other instrument series

5. Standard English Order Description (can be sent directly to suppliers)

`AU3048B, LCD Display Module Type B for TTF300 Transmitter`

6. 原産国: 中国 / イタリア (depends on production batch)
7. 最低注文数量: 1 ピース
8. 電気 & インターフェース仕様
9. 電源: No independent external power supply; powered via internal backplane bus from TTF300 transmitter
10. インタフェース: Dedicated board-to-board straight connector; no external wiring terminals
11. 通信プロトコル: Proprietary internal serial bus; NOT HART / RS485. Cannot operate standalone
12. 消費電力: Powered by host transmitter; typical additional power consumption ＜3mW
13. 画面 & Keypad Specifications
14. 表示タイプ: Segment LCD with backlight
15. Display Capability

Numeric: 4 digits plus sign symbol, まで 2 decimal places

Extra elements: Bar graph, alarm status indicators, sensor diagnostic codes

Viewable data: センサー 1 / センサー 2 readings, electronics housing temperature, 4–20mA output percentage, fault diagnostic messages

3. Keypad Layout: 4 membrane keys (UP, DOWN, 入力, ESC)
4. Operation Rights: Local parameter configuration, zero trimming, fault code reading, display page switching
5. 環境仕様 (compliant with TTF300 transmitter specifications)

Explosion Protection Remark: The display module itself carries no Ex certification. Overall explosion protection rating depends on the complete TTF300 transmitter certificate (アテックス / IECEx).

5. 機械的寸法 & 工事
6. Outline: Circular embedded module, matching circular installation cavity of TTF300 transmitter housing
7. ハウジング材質: Flame-retardant ABS plastic
8. 取付方法: Snap-fit installation by pushing into transmitter housing; ネジは必要ありません
9. 侵入保護: Front face achieves IP66/IP67 together with transmitter enclosure; bare PCB module rated IP20
10. 正味重量: 約. 45 g
11. Supported Functions List
12. Cyclic display of dual temperature sensor values (dual Pt100 transmitter models)
13. Sensor drift monitoring and sensor redundancy status indication
14. NE107 standard diagnostic information; sensor open-circuit / short-circuit alarm codes
15. Display of transmitter 4–20mA output value and output percentage
16. Local basic configuration: engineering unit setup, damping, high/low alarm limits
17. On-site fault code reading without configuration software
18. Fault Identification Criteria (AU3048B hardware failure)
19. LCD blackout, no backlight; transmitter 4–20mA analog output works normally
20. Screen distortion, missing characters
21. All buttons non-functional, cannot enter configuration menu

✅ Differentiation Tip: Transmitter mainboard failure may also cause black screen. Check transmitter power supply and internal connector tightness before replacing display unit.

8. Critical Compatibility Restrictions
9. AU3048B ≠ AU3048A: Type A and Type B differ in firmware and pin assignment; not interchangeable
10. Only supports TTF300 hardware version ≥ HW 02.00.02; older hardware versions cannot recognize new display modules
11. Cannot be powered on and tested separately. Must be installed inside TTF300 transmitter for activation.
12. 交換情報

No third-party domestic compatible substitutes; only original AU3048B spare part available

If local operation is unnecessary for TTF300 transmitter, the display can be removed and replaced with blank cover spare part