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ABB NTDI01 Bailey INFI90 / Symphony Plus Digital DI/DO Termination Unit

Developed for heavy-duty process industry DCS control, NTDI01 adopts passive circuit design without internal operation chip, realizes centralized field cable wiring arrangement for 16-channel digital input + 16-channel digital output signals. Every channel configures independent fuse protection and surge suppression circuit, with 1500V AC channel-to-channel electrical isolation to isolate field interference and avoid DCS core I/O module damage caused by field short-circuit & overvoltage. Equipped multiple jumper jumpers (XU1~XU17) on PCB, flexible to switch sink/source input mode and adapt 24VDC/48VDC/120VAC different field signal levels. Screw fixed terminal design, convenient field wiring; onboard channel status indicator LED for rapid fault location during site troubleshooting, standard cabinet card slot plug-in installation, direct plug and play with IMDSI/IMDSO motherboard.

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ABB NTDI01 Bailey INFI90 / Symphony Plus Digital DI/DO Termination Unit

As essential matching terminal spare of ABB INFI90/Symphony DCS digital I/O system, NTDI01 solves wiring disorder, frequent channel short-circuit, signal sampling abnormal, DCS DI/DO point loss faults caused by original terminal board aging, terminal oxidation and PCB circuit burnout. Same PCB layout, terminal definition and installation dimension as OEM original part, no cabinet wiring modification needed during field replacement, effectively shorten equipment shutdown maintenance period. Two supply options: factory sealed original new with ABB factory specification; refurbished version via component screening, circuit aging test, full channel on-load debugging, both covered unified 12-month global warranty for power station overhaul, chemical plant DCS upgrade and urgent breakdown procurement.

 NTDI01


Technical Parameters:
ItemSpecification
ModelNTDI01
Applicable SystemABB Bailey INFI90 / Symphony Plus / Harmony DCS
Matching Main CardIMDSI(DI), IMDSO(DO) Digital I/O Module
Channel Configuration16 Digital Input +16 Digital Output Terminals
Isolation Rating1500VAC Channel-to-Channel Isolation
Applicable Signal24VDC/48VDC/120VAC DI;24VDC/125VDC DO(adjust via jumper)
ProtectionPer-channel independent fuse + surge absorption protection
InstallationPlug-in slot mounted inside DCS cabinet
Operating Temp-25℃ ~ +70℃
Storage Temp-40℃ ~ +85℃
Ambient Humidity5%~95%RH non-condensing
Dimension(W×H×D)79×234×214mm
Net Weight≈0.36kg
CertificationCE, UL, RoHS Certified

 NTDI01


Application Fields:
  • Thermal Power Plant: Boiler, turbine INFI90 DCS cabinet DI/DO terminal spare replacement

  • Hydropower Station: Unit auxiliary control Symphony Plus DCS cabinet maintenance stocking

  • Petrochemical Industry: Refinery, chemical reactor process control DCS overhaul

  • Cement Plant: Rotary kiln production line ABB Bailey DCS spare parts

  • Metallurgy Factory: Smelting furnace interlock control discrete signal terminal transformation

Core Features & Advantages:
  • Exclusive INFI90/Symphony Matching: Perfect mechanical & electrical compatibility with IMDSI/IMDSO series I/O main card

  • High Isolation Anti-interference: 1500VAC channel isolation effectively resist workshop electromagnetic disturbance

  • Multi-level Signal Adaptation: Jumper configurable for various AC/DC field discrete signals

  • Per-channel Safety Protection: Independent fuse+surge circuit to protect DCS core module from field fault impact

  • LED Fault Prompt: Onboard indicator light for quick channel abnormal diagnosis, easy maintenance

  • Plug-and-play Swap: Standard cabinet plug-in design, direct replacement without program adjustment

  • New & Refurbished Dual Stock: Meet project bulk procurement and emergency rush repair separately

  • Strict Pre-shipment Test: All refurbished boards pass full channel continuity & isolation aging inspection

FAQ:

Q1: Which DCS system uses ABB NTDI01?

A: It’s dedicated terminal board for ABB Bailey INFI90, Symphony Plus and Harmony DCS control system, matched with IMDSI/IMDSO digital I/O cards.

Q2: Common failure requiring NTDI01 replacement?

A: Terminal corrosion open circuit, PCB track burnout, frequent channel short circuit alarm, DCS unable to collect on-site switch feedback signal.

Q3: Is NTDI01 a programmable intelligent module?

A: No, it belongs to passive termination unit without processor, only responsible for field wiring transfer and circuit protection.

Q4: Warranty & Delivery Solution?

A: 12-month global warranty; DHL/FedEx fast air delivery for power plant urgent repair, anti-shock foam+export carton package.

Q5: Difference between NTDI01 and NTDI21?

A: NTDI21 is upgraded compact version, NTDI01 is classic standard terminal board, partial hardware cannot cross interchange.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.

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Guangzhou Qiming Automation Technology Co., Ltd
Room 208, Room D487, No.1933-20 Huaguan
Road, Tianhe District, Guangzhou City
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+86 16626708626
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3772179818@qq.com
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