ABB NKAS01
ABB NKAS01
ABB NKAS01
ABB NKAS01

ABB NKAS01 | Symphony Plus DCS Connection Terminal Block

  • Brand: ABB
  • Model: NKAS01
  • Product Type: Connection Component (Terminal Block/Cable Assembly)
  • Series: Symphony Plus DCS Accessories
  • Core Function: Provides standardized electrical connection between ABB Symphony Plus DCS control modules and field devices (sensors, actuators), ensuring stable signal transmission in industrial environments.
  • Key Specs: Compatible with Symphony Plus DCS; -40°C to +70°C operating temperature; pre-fabricated terminal block (NKAS01-15) or analog signal cable (NKAS01-L series); 500V insulation rating.
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Part number: ABB NKAS01
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Description

NKAS01: Product Overview
This component is a connection solution within ABB’s Symphony Plus DCS (Distributed Control System) accessories, designed to bridge control modules and field devices in industrial automation architectures. It serves as a critical interface in the DCS hierarchy, positioned between the controller’s I/O modules and现场设备 (e.g., temperature sensors, pressure transmitters, solenoid valves). Its role is to establish reliable electrical connections for signal transmission—whether analog (4-20mA, 0-10V) or digital (dry contact)—while maintaining signal integrity in harsh industrial settings.
The core functionality varies by sub-model: the NKAS01-15 terminal block provides a pre-fabricated, multi-channel platform for securing and organizing cables from field devices to I/O modules, with built-in strain relief to prevent wire fatigue. The NKAS01-L series cables (e.g., L5, L6) are purpose-built for analog signal transmission, featuring shielded conductors to minimize electromagnetic interference (EMI). Both variants undergo rigorous testing for vibration, shock, and thermal cycling to ensure long-term stability.
It belongs to the Symphony Plus DCS Accessories family, optimized for compatibility with ABB’s legacy and current control systems. The platform’s benefits include standardized mechanical/electrical interfaces (reducing integration errors), global availability of spare parts, and adherence to IEC 60947 (terminal block standards) for interoperability. This ensures seamless integration with Symphony Plus modules (e.g., NTAI analog I/O) and third-party devices when specified.

ABB NKAS01

ABB NKAS01

NKAS01: Technical Specifications
  • Model Number: NKAS01
  • Manufacturer: ABB
  • Product Type: Connection Component (Terminal Block/Cable)
  • Sub-Models: NKAS01-15 (Terminal Block), NKAS01-L5/L6/L7 (Cables)
  • Compatible System: ABB Symphony Plus DCS (e.g., HD/HCU controllers, NTAI/NTRI I/O modules)
  • Material: Polyamide (insulation), brass/copper (conductors), 316 stainless steel (hardware)
  • Operating Temperature: -40°C to +70°C (terminal block); -20°C to +70°C (cables)
  • Insulation Rating: 500V AC/DC (terminal block); 300V AC (cables)
  • Channel Capacity: 12-24 terminals per block (NKAS01-15); 2-4 shielded pairs per cable (NKAS01-L)
  • Protection Rating: IP20 (terminal block, finger-safe); IP65 (cable terminations, optional)
  • Connection Type: Screw-clamp (terminal block); M12/D-sub (cable ends, model-dependent)
  • Certifications: UL 94 V-0 (flame retardant), CE, RoHS
  • Weight: 0.15kg (terminal block); 0.3kg/m (cables)
Core Features & Customer Value​
The component’s design prioritizes reliability, ease of integration, and long-term maintainability. The pre-fabricated nature of the NKAS01-15 terminal block eliminates field wiring errors—engineers simply insert pre-stripped cables into clamp terminals, reducing commissioning time by up to 30% compared to custom-assembled blocks. For maintenance teams, color-coded terminals (per ABB’s wiring guidelines) simplify tracing signals during troubleshooting, minimizing downtime.
High-grade materials (polyamide insulation, stainless steel screws) ensure durability in corrosive environments (e.g., chemical plants with acidic vapors). The 500V insulation rating prevents arcing in high-voltage applications, while strain relief slots in the terminal block housing protect against cable pull-out—critical for vibrating equipment like pumps or compressors. For the customer, this translates to fewer replacements and lower lifecycle costs.
NKAS01-L series cables use shielded twisted-pair conductors to preserve analog signal accuracy (e.g., 4-20mA loops for pressure transmitters). The shielding reduces EMI from adjacent machinery (e.g., motor drives), ensuring measurement precision in steel mills or power plants. Compatibility with Symphony Plus I/O modules (e.g., NTAI06) allows plug-and-play integration, avoiding custom adapters.

ABB NKAS01

ABB NKAS01

Typical Applications​
In a chemical distillation column, the NKAS01-15 terminal block connects 16 temperature sensors (RTDs) to an NTAI06 analog input module. The pre-fabricated design ensures correct wiring per P&IDs, while the -40°C to +70°C rating withstands outdoor control panel temperatures. Technicians use color codes to quickly identify sensor loops during calibration.
At a municipal water treatment plant, NKAS01-L6 cables link pH/ORP sensors to a remote I/O station. Shielded conductors prevent noise from variable frequency drives (VFDs) on nearby pumps, maintaining signal accuracy for chemical dosing control. The IP65-rated terminations resist moisture in wet wells.
In a power plant’s turbine control system, the terminal block integrates proximity switches (limit switches) with a safety I/O module. Strain relief slots prevent wire fatigue from turbine vibration, and 500V insulation handles transient voltages from generator switching.

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