KONGSBERG WCU LED Control Unit Application Guide

KONGSBERG WCU LED Control Unit Application Guide

Product Overview

WCU LED Control Unit with LED indication is a wall mounted control panel that integrates LED status indication function. It is usually used in ship engine rooms, cockpits, or living areas to achieve status monitoring, alarm indication, or simple control operation of various equipment. As part of the Kongsberg K-Chief ship automation system, WCU LED is capable of real-time communication with the central control system, displaying key parameters and alarm status, and receiving operational instructions. Its design fully considers the special characteristics of the ship environment, such as power fluctuations, vibrations, high humidity, salt spray corrosion, etc., ensuring the reliability of long-term operation.

Detailed analysis of technical specifications

According to the product technical data, the main technical parameters of WCU LED control unit are shown in the following table:

Parameter specification values

Power supply voltage 18-32 VDC

Power consumption 5 W

Working temperature -15 ° C to+70 ° C

Storage temperature -30 ° C to+80 ° C

Maximum relative humidity 97% (no condensation)

Protection level IP 22

Environmental standards IACS E10, IEC 60945

Anti vibration performance 1G

Weight 1.4 kg

Installation method: fix with 4 M4 screws

Dimensions 240 × 144 × 50 mm

Hole size 211 × 138 mm

Type certification DNV, LRS, BV, GL, RINA, NK, ABS, KR, RMR, CCS (as part of K-Chief certification)

Below is a detailed interpretation of each parameter:

Power supply voltage (18-32 VDC)

Ship power grids typically use 24 VDC as the control power source, but the actual voltage may fluctuate due to load changes. WCU LED supports a wide range of input from 18 to 32 VDC, which can adapt to voltage changes during the charging process of ship battery packs and voltage drops caused by long-distance transmission, ensuring the stability of power supply. This wide voltage design complies with the requirements of IEC 60945 for power supply variation, with a typical voltage variation range of ± 10% to ± 20% of the rated value.

Power consumption (5 W)

The extremely low power consumption (5 W) allows WCU LED to generate almost no heat and can work continuously for a long time without the need for additional heat dissipation measures. Meanwhile, the low power consumption characteristic helps to reduce the burden on the ship's DC distribution system, especially suitable for energy sensitive occasions.

Working temperature and storage temperature

The working temperature range of -15 ° C to+70 ° C covers the environmental conditions of most compartments of the ship, including high-temperature areas in the engine room (up to 55 ° C or above near the main engine) and low-temperature environments on the outdoor deck in cold sea areas. The storage temperature range is wider (-30 ° C to+80 ° C), making it easier for equipment to withstand extreme weather conditions during transportation and storage.

Relative humidity (97%, no condensation)

The interior of the ship, especially the engine room and cargo hold, is often in a high humidity environment, with a relative humidity of up to 97% or even higher. WCU LED can withstand high humidity without condensation, which requires good moisture resistance of the housing material and internal circuit, such as three proof paint coating or sealed structure. Meets the requirements of IEC 60945 for wet heat cycle testing.

Protection level IP 22

IP22 indicates that the device can prevent solid foreign objects with a diameter greater than 12.5 mm from entering (such as fingers), and there is no harmful effect on dripping within a 15 ° range from the vertical direction. For equipment installed in areas without direct spray such as the cab, control room, or corridor, IP22 is sufficient to protect against accidental contact and vertical dripping of water droplets. If higher protection is required (such as in the engine room flushing area), a protective cover may need to be installed.

Environmental standards IACS E10 and IEC 60945

IACS E10 is a recommended standard by the International Association of Classification Societies for environmental testing of marine electronic equipment, covering testing requirements such as vibration, temperature, humidity, tilt, sway, salt spray, etc. IEC 60945 is the general requirement of the International Electrotechnical Commission for maritime navigation and wireless communication equipment and systems, including environmental testing methods and performance criteria. Meeting these two standards means that WCU LED has undergone rigorous type testing and can withstand common mechanical stress, climate stress, and electromagnetic interference in ships.

Anti vibration performance (1G)

Vibration testing (1G) is typically conducted under sweep conditions with an amplitude of ± 1 mm from 2 Hz to 13.2 Hz and an acceleration of 0.7g from 13.2 Hz to 100 Hz (according to IEC 60068-2-6). 1G corresponds to an acceleration of 9.8 m/s ², which is sufficient to simulate typical vibrations caused by the main propulsion system and auxiliary equipment of a ship. The 1G index of WCU LED indicates that its structural design and internal components can withstand long-term vibration without fatigue damage or poor contact.