KONGSBERG NA-1E220 Modules NA1E220.1 Single Board

Technical Dossier

Product Details And Specifications

KONGSBERG NA-1E220 Series Technical Notes

The KONGSBERG NA-1E220 series represents a core single-board computing and I/O platform deployed across heavy industrial and maritime automation environments globally. Kongsberg Maritime and Kongsberg Digital systems — including the K-Chief, SDP (Dynamic Positioning), and CAMS (Cargo Management Systems) platforms — have relied on NA-1E220 series boards as foundational processing and interface elements in distributed control architectures. These boards are found in service aboard offshore drilling rigs, LNG carriers, FPSO vessels, petrochemical plants, and nuclear auxiliary systems where long operational lifecycles (15–30 years) make spare parts availability a critical procurement concern.

The NA-1E220 series operates within Kongsberg's proprietary backplane bus architecture, interfacing with supervisory controllers, operator stations, and field I/O networks. As the installed base ages, OEM production of these boards has been discontinued, placing sourcing responsibility on specialist distributors with RFQ-reviewed sourcing status and testing capability.

The Evolution of NA-1E220 Architecture

The NA-1E220 board family was introduced as part of Kongsberg's modular automation platform during the late 1990s and early 2000s, designed to meet IEC 61508 functional safety requirements for marine and offshore applications. Early revisions (NA1E220.1) featured single-processor architectures with parallel bus interfaces, supporting Kongsberg's proprietary inter-module communication protocol over VME-derived backplanes.

Subsequent hardware revisions introduced enhanced memory capacity, improved EMI shielding for harsh marine environments (salt fog, vibration per IEC 60068), and expanded diagnostic LED arrays for field fault isolation. The transition from through-hole to surface-mount component technology occurred across mid-series revisions, improving shock resistance ratings.

NA-1E220 Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the KONGSBERG NA-1E220 series and associated platform modules commonly sourced alongside NA-1E220 boards. Each entry reflects a distinct functional role within the system architecture:

NA-1E220 / NA1E220.1: Single-board processor module, Rev.1, primary CPU card for Kongsberg DCS backplane.
NA-1E220 / NA1E220.2: Single-board processor module, Rev.2, enhanced memory and diagnostic firmware.
NA-1E220 / NA1E220.3: Single-board processor module, Rev.3, improved EMI shielding for offshore environments.
NA-1E221 / NA1E221.1: Analog input board, 16-channel, 4–20 mA signal conditioning for field instruments.
NA-1E222 / NA1E222.1: Analog output board, 8-channel, 4–20 mA loop-powered actuator interface.
NA-1E223 / NA1E223.1: Digital input board, 32-channel, 24 VDC discrete signal acquisition module.
NA-1E224 / NA1E224.1: Digital output board, 16-channel, relay-driven discrete output for valve and motor control.
NA-1E225 / NA1E225.1: Serial communication adapter, RS-232/RS-485 dual-port, NMEA 0183 and Modbus RTU support.
NA-1E226 / NA1E226.1: Ethernet communication module, 10/100 Mbps, Modbus TCP and proprietary Kongsberg protocol.
NA-1E227 / NA1E227.1: Power supply board, 24 VDC regulated, redundant input with fault relay output.
NA-1E228 / NA1E228.1: Redundancy controller board, hot-standby switchover logic for CPU redundancy pairs.
NA-1E229 / NA1E229.1: Pulse input board, 8-channel, frequency and encoder signal processing for shaft/flow measurement.
NA-1E230 / NA1E230.1: Thermocouple input board, 8-channel, J/K/T type with cold-junction compensation.
NA-1E231 / NA1E231.1: RTD input board, 8-channel, PT100/PT1000 three-wire resistance temperature measurement.
NA-1E232 / NA1E232.1: Fieldbus gateway module, PROFIBUS DP slave interface for third-party instrument integration.
NA-1E233 / NA1E233.1: Watchdog and system health monitor board, independent hardware fault detection and alarm relay.
NA-1E234 / NA1E234.1: High-density analog input board, 32-channel multiplexed, for large-scale sensor arrays.

Sourcing Hard-to-Find & Obsolete NA-1E220 Parts

Customers requiring long-term maintenance support for Kongsberg NA-1E220 installations are advised to establish a standing spare parts agreement. DriveKNMS provides documentation support including cross-reference tables between NA-1E220 hardware revisions and compatible firmware builds.

Quality Control for the NA-1E220 Range

The NA-1E220 single-board architecture presents specific testing challenges due to its proprietary backplane bus interface and embedded firmware dependencies. DriveKNMS applies the following verification protocol to all NA-1E220 series units:

Each board undergoes visual inspection per IPC-A-610 Class 2 criteria, covering solder joint integrity, component seating, and connector pin condition. Functional testing is performed using Kongsberg-compatible backplane test fixtures that simulate the live bus environment, verifying CPU initialization, memory self-test completion, and inter-module communication handshake sequences. Analog I/O boards are calibrated against NIST-traceable reference standards with full-range linearity verification (0–100% span, ±0.1% accuracy threshold). Communication modules are tested for protocol compliance under simulated network load conditions. All units are subjected to thermal cycling (0°C to +55°C operating range) to screen for latent solder joint failures common in aged SMT assemblies. Final test records, including pass/fail data and firmware version confirmation, accompany each shipped unit.