KONGSBERG NA-1E220 I/O & Power Card

I. Basic Identity Information
Brand Evolution: Original Norcontrol, later acquired by Kongsberg, uniformly labeled as KONGSBERG
Standard Model: NA-1E220.1 (the sole mass-produced main version, referred to as NA-1E220)
Original Material Code
PCB Hardware Number: 6200091
Overall Machine Label Part Number: HA331676B / HA331676C (multiple hardware revisions: H2, C/C/C, etc.)
System Ownership: The core motherboard of the old-fashioned ETU engine room UMS unmanned monitoring and alarm system, integrating CPU computing, overall power supply, local I/O acquisition, and backplane bus scheduling functions
Positioning Level: The brain of the entire chassis + power center, driving the NA-1E221 panel card and collecting on-site switch quantity / analog quantity signals

Three Core Integrated Functions
1. CPU Main Control Computing Unit
Core Chip: Intel 80188 single-bus industrial processor
Responsible for the entire system logic: alarm judgment, pump / fan interlock, delay silence, mode switching (automatic / manual / local)
Firmware Storage: On-board EPROM fixed program, RAM cache real-time alarm, liquid level, pressure values
Backplane Parallel Bus: Unified scheduling of all sub-boards (NA-1E221, analog quantity acquisition sub-board) data interaction
2. Overall Power Conversion (Power)
Input: Standard 24VDC power supply for the ship’s cabin
On-board isolation switch power supply, multi-channel voltage regulation output: ±5V, ±12V for its own CPU, backplane all card power supply
Built-in overvoltage, reverse connection, short circuit protection; when power supply abnormal, the on-board red fault light is lit and the system is locked
Maximum power consumption of the entire machine: ≈15W
3. Local I/O Signal Acquisition (I/O)
Equipped with direct connection terminals: 16 DI digital input, 16 DO digital output
DI: On-site pressure switch, liquid level high and low, temperature over-limit, fan operation feedback
DO: Sound and light alarm horn, electromagnetic valve start and stop, fault indicator light, backup relay output
Can be extended with external analog quantum boards to collect temperature, 4–20mA pressure / liquid level transducer signals