Description
Norcontrol NA-1110 HA 220256 B/B | DGU Panel Card
Dynamic Product Introduction
The Norcontrol NA-1110 HA 220256 B/B is a legacy marine automation panel card associated with Norcontrol’s NA-1110 DGU system. Current marine automation inventory records identify NA-1110 as a DGU panel card/system designation and HA 220256 B/B as its associated hardware number.
This is old vessel-control hardware, so procurement should be handled differently from buying a current PLC module. The board is part of a larger engine control and alarm architecture; connector position, revision, installed configuration, and the surrounding DGU hardware all matter. A visually identical PCB is not automatically a safe substitute.
The B/B revision is particularly worth recording. Norcontrol systems contain multiple generations of cards with similar HA numbering, and marine maintenance suppliers continue to identify individual boards by both the NA-series system number and the HA hardware number. For comparison, marine automation inventories list NA-1111.2 as HA 220585C/C and NA-1112.1 as HA 220782A/A, illustrating why the complete identification should be preserved rather than shortened to “220256.”
HA 220256 B/B
Key Technical Specifications
- System: Norcontrol NA-1110
- Hardware Number: HA 220256 B/B
- Manufacturer: Norcontrol Automation
- Product Category: DGU panel card
- Application: Marine engine control and alarm system
- Architecture: Legacy distributed marine automation hardware
- Board Revision: B/B
- Reported Weight: Approximately 440 g
- Installation: Vessel control-panel / DGU equipment; exact rack or panel position must be verified from the vessel documentation
- Communication Interfaces: Not safely established from the available public records
- I/O Configuration: Not safely established from the available public records
- Power Requirements: Not safely established from the available public records
- Firmware: Verify from the actual installed board/system
- Lifecycle: Legacy/discontinued marine automation hardware
The available records do not provide enough authoritative information to publish channel counts, supply voltage, connector pinout, processor specifications, or communication protocols. Those values should be obtained from the vessel’s Norcontrol documentation or the actual board rather than inferred from the HA number.
Global Sourcing & Live-Test SOP
1. Inbound Verification
Before accepting a HA 220256 B/B, record:
- HA number
- NA-1110 identification
- Board revision
- Serial number, if present
- PCB revision markings
- Connector arrangement
- Component condition
- Any handwritten maintenance markings
Inspect the board under magnification for corrosion, cracked solder joints, burned components, lifted tracks, damaged edge connectors, and evidence of previous component replacement.
For marine equipment, pay particular attention to salt contamination and connector oxidation.
2. Configuration Verification
Compare the replacement against the removed card:
- Connector locations
- Jumper settings
- DIP-switch settings
- Board revision
- Component population
- Terminal assignments
- Harness routing
Do not alter jumpers or switches until the original configuration has been photographed and documented.
3. Bench Testing
A complete bench test should use the appropriate Norcontrol test documentation.
Where the required documentation is available:
- Verify the correct supply arrangement.
- Check power-up behavior.
- Inspect diagnostic indicators.
- Verify expected input/output behavior.
- Check communication with the associated DGU equipment.
- Monitor current draw and board temperature.
- Record abnormal alarms rather than clearing them without investigation.
A calibrated multimeter can be used for supply and continuity checks, but arbitrary voltage injection into an unidentified terminal is not an acceptable substitute for the original test procedure.
4. Marine-System Simulation
Where a proper test setup is available:
- Reproduce the expected DGU operating state.
- Exercise the relevant control/alarm signals.
- Verify indication changes at the panel.
- Confirm communication with the associated controller.
- Check alarm transitions.
- Test power interruption and controlled restart.
- Compare behavior against the removed board.
5. 24-Hour Heat Run
For a serviceable replacement, an extended powered test is worthwhile before dispatch.
Monitor:
- Supply stability
- Board temperature
- Communication stability
- Alarm behavior
- Unexpected resets
- Connector temperature
- Current consumption
A board that passes a five-minute power-up test has not necessarily demonstrated long-duration reliability.
6. Final Preparation
Record the complete identification:
Norcontrol NA-1110 / HA 220256 B/B
Also record:
- Serial number
- Board revision
- Test results
- Configuration settings
- Physical condition
- Firmware information where available
- Warranty status
Package the card in ESD-safe material with mechanical protection around the PCB and connectors.
Field Engineer’s Pitfall Guide
❗ Do not buy from the HA number alone.
The correct identification is NA-1110 + HA 220256 B/B. Marine inventory records show that Norcontrol uses separate HA numbers and revisions across closely related DGU systems. Confirm the complete designation before replacing a board.
❗ Do not assume a used board is operational because it powers up.
The supplied listing is explicitly classified “For parts or not working.” That means the specific unit being sold should be treated as a repair candidate unless the seller provides separate functional-test evidence.
❗ Do not change jumpers, switches, or wiring by trial and error.
Legacy DGU cards can depend on configuration settings established during vessel commissioning. Photograph the original board and compare every configuration point before transferring settings.
Intent-Driven FAQ
What is HA 220256 B/B?
HA 220256 B/B is the hardware identification associated with the Norcontrol NA-1110 DGU panel card used in marine engine control and alarm equipment.
What is the Norcontrol NA-1110?
NA-1110 is a Norcontrol marine automation system designation associated with DGU panel equipment. Current marine automation inventories list NA-1110 as HA 220256 B/B.
Is HA 220256 B/B a PLC CPU?
It should not be marketed as a generic PLC CPU. The available identification describes it specifically as a DGU panel card within the Norcontrol marine control architecture.
Is HA 220256 B/B still manufactured?
It is legacy Norcontrol hardware and is now primarily encountered through marine surplus, used-equipment, repair, and specialist spare-parts channels. Current specialist inventory listings continue to identify the NA-1110 / HA 220256 combination.
