Author Archives: changxin

ABB NTDI01 Hot-Swappable Digital I/O Terminal UnitABB NTDI01 Hot-Swappable Digital I/O Terminal Unit

  Application Scenarios In a 600 MW coal-fired power plant, the ABB NTDI01 serves as the critical interface for boiler protection logic, connecting dozens of field devices—including pressure switches, flame detectors, limit switches, and valve position indicators—to the INFI 90 DCS. Previously, the facility struggled with scattered point-to-point wiring and difficult troubleshooting during plant startups.…

ABB NTRO02-A Termination Unit for Bailey Infi 90 DCS Systems

  Technical Specifications Parameter Name Parameter Value Product Model NTRO02-A Manufacturer ABB Product Type Termination Unit / I/O Interface Board System Compatibility ABB Bailey Infi 90, Symphony Plus, Harmony DCS, Advant Channel Configuration 2-channel analog I/O or 16/32-channel digital I/O (configurable) Input Signal Types 0-10V, 2-10V, 4-20mA, 0-20mA (analog variants) Input Voltage Range 24V DC…

ABB NTRL04 HARM HNET Fiber Optic Repeater Termination Unit – Replacement Spare for Harmony DCS Networks

  Technical Specifications Parameter Name Parameter Value Product Model NTRL04 Manufacturer ABB Product Type Termination Unit (TU) for HARM HNET Fiber Optic Repeater Platform ABB Harmony OCS / Advant OCS (HNET network) Paired Electronic Module HARM HNET Repeater (NRP-family, e.g. NRP04 / NRPxx, sold separately) Network Type HNET (Harmony NETwork), 10 Mbps, fiber-optic, redundant ring/mesh…

ABB Multi-Function Processor Termination Unit for INFI 90 DCS

  Product Overview The NTMP01 is a specialized Multi-Function Processor Termination Unit manufactured by ABB (formerly Bailey Controls) for the INFI 90® and Symphony Plus distributed control systems (DCS) . This PC board serves as the critical communication and wiring interface between high-performance controllers—including the Multi-Function Processor (MFP), Bridge Controller (BRC), and various interface modules…

ABB NTMF01​ Multi-Function Termination Unit — Hand/Auto, Alarm Ack, Watchdog, Status I/O for INFI 90 Multi-Function Controller

  Product Overview The ABB NTMF01​ is a Multi-Function Controller Termination Unit — the field-facing termination (FTA) that pairs with ABB’s INFI 90 / Symphony Harmony Multi-Function Controller (MFC) processor modules such as IMFCS01​ and IMFEC12, forming the same “smart electronic module + passive termination” split architecture that defines the Bailey INFI 90 I/O philosophy.…

ABB NTDO02 Digital Output TU for Process Automation and Power Generation

  Technical Specifications Parameter Name Parameter Value Product Model NTDO02 Manufacturer ABB (Bailey Controls) Product Type Digital Output Termination Unit Series Compatibility INFI 90, Symphony, Net 90 DCS Output Channels 8 (solid state relay outputs) Compatibility IMDSO04 Digital Output Module / IMDSM05 Digital I/O Module Max Channel Output 24V DC, 1.2A (typical) Overload Capacity Up…

ABB NTDI02: 16-Point DI, Optical Isolation, -20 °C to +60 °C, IP20 Cabinet Mount

Application ScenariosOn a 320 MW combined-cycle unit’s steam-turbine lube-oil skid, the original I/O rack carried an IMDSO02 (SOE-rated DI, 1 ms timestamp) in the inner slot, paired with an NTDI02​ in the outer slot. The 16 DI points on that NTDI02​ landed: bearing-TI trip relays (4 pts), seal-oil tank low-level floats (2 pts), lube-oil pump…

ABB NTCS04 I/O Termination Control Unit – S500 Termination Carrier for NTAI06/NTDI08/NTRO06

  Application Scenarios At a batch-pharma reactor suite in Basel, the jacket-temperature and agitator-load I/O sit in a Div 2 kiosk 40 meters from the MCR’s AC 800M + CI854. The S500 rack holds eight NTCS04​ carriers: four with NTAI06 (8 AI each = 32 TCs/RTDs for jacket, reflux, pot, condenser), three with NTDI08 (limit…

ABB NTCL01 10 Mbaud Communication Link Termination Board

  Application Scenarios In a 600 MW coal-fired power plant using the ABB Symphony Plus DCS, operators needed to expand their control network to include a new flue gas desulfurization (FGD) unit located 200 meters from the main control room. The existing Cnet backbone required a robust termination point to maintain signal integrity over the…

ABB NTCF23: Enhanced Fiber Optic Termination Unit for INFI-Net, 10 Mbps, Dual ST/SC

Application ScenariosA 620 MW supercritical coal unit running Bailey INFI 90 across two separate MCC buildings—Boiler (MFP-A) and Turbine (MFP-B)—originally linked the two MFPs with a 450 m NKLS01-20 electrical run daisy-chained through three underground tray ducts. During a 6 kV feeder fault in the switchyard, the induced ground-potential rise (GPR ≈ 600 V) coupled…