KONGSBERG NA-1E221 Panel Card (Old Series Panel Operating Card of Norcontrol)
I. Basic Identification Information
Original Brand Name: Norcontrol (later acquired by Kongsberg, collectively referred to as Kongsberg Maritime)
Full Model: NA-1E221, Sub-versions: NA-1E221.1 / NA-1E221.2 / NA-1E221.3
Original Factory Part Number: HA331728 A/A/A, Identifies REV F and other hardware versions
Position: Key display panel driver board for the engine room centralized control console, belonging to the classic Norcontrol ETU engine room monitoring and alarm system (UMS) core human-machine interface board card
Core Hardware and Channel Configuration
Panel indicator circuit
On-board multiple sets of red/green/yellow three-color LED driver arrays, corresponding to engine room alarms, operation, faults, and valve pump status indications; each indicator light on the panel is driven and addressed by this card
Key input scanning
Collecting operation instructions (start/stop, mute, reset, mode switching) from the control console’s film keys/buttons, and uploading them to the system CPU motherboard (NA-1E220.1)
Communication bus
Internal parallel bus connects to the ETU main control CPU board NA-1E220.1
Older bottom plate and backplane bus communication, without external network ports; multiple NA-1E221 boards in the same chassis can be paralleled to expand multiple operation panels
Electrical power supply
Standard marine 24VDC power supply; the overall power consumption is approximately 10–15W, with a working current of ≤0.5A
Mechanical size and weight
Size: approximately 126×124×22mm
Net weight: 180–220g, European-style rack plug-in board type, plug-in and replaceable design
Version Differentiation
NA-1E221.1: Basic Standard Version, with regular engine room pumps, fans, and valve position panel drives
NA-1E221.2: Expanded Enhanced Version, with more light points and button positions, the most versatile and largest stock quantity
NA-1E221.3: High-density Position Version, specially designed for multi-zone centralized control consoles of large ships, material code CO-08089
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