DS3800HIOD1H1G | New Surplus GE Mark V I/O Expansion Board

Description

Product Introduction

The DS3800HIOD1H1G is the ultimate ruggedized I/O expansion board—it combines the 50-pin DIN connector (1H) for vibration resistance with conformal coating (1G) and the extreme temperature range of the HIOD (-40°C to +85°C), all while providing 5A fusing on both banks for maximum current headroom. This board is designed for the most demanding applications: offshore platforms, arctic installations, desert solar plants, and naval vessels where shock, vibration, temperature extremes, and corrosive conditions are the norm. The 64 I/O point capacity makes it suitable for large expansions in the harshest environments.

We’ve used the HIOD1H1G on a naval vessel where the Mark V cabinet is subject to shock loads, salt spray, and temperature swings from -30°C to +60°C. The 50-pin DIN connector with its threaded locking ring survived the 10g shock test, the conformal coating protected against salt spray, and the extended temperature range ensured reliable operation in the engine room. The 5A fuses handled the inrush currents from the long cable runs to the ship’s sensors and actuators. The board’s 64 I/O point capacity allowed us to add all the required I/O points without multiple expansion boards.

Key Technical Specifications

Compatible Replacement Models

Frequently Asked Questions (FAQ)

Q: What’s the advantage of the 50-pin DIN connector on the 1H suffix?
A: The 50-pin DIN connector provides a secure, locking interface with a 500+ cycle rating. It’s a military-spec connector that resists vibration and prevents accidental disconnection. This is a significant upgrade over terminal blocks in high-vibration environments, such as naval vessels, offshore platforms, and heavy industrial installations.

Q: What is the advantage of conformal coating on the 1G suffix?
A: Conformal coating is a thin polymeric film applied to the PCB that protects against moisture, dust, chemicals, and temperature extremes. This is essential for offshore, desert, or high-humidity installations where corrosion and contamination can cause premature board failure. The coating extends the board’s service life in harsh environments.

Q: Why does the HIOD1H1G have 5A fuses on both banks?
A: The 5A fuses provide maximum headroom for expansion modules with high current requirements, such as output modules driving large solenoids or contactors, or when cable runs are long and capacitance causes inrush currents. The 5A rating is the highest available for expansion boards and is the standard for extreme-environment variants.

Q: What’s the shock and vibration rating of the HIOD1H1G?
A: The HIOD1H1G is rated for 10g at 20-2000Hz (vibration) and 30g (shock) per MIL-STD-810. This makes it suitable for naval, aerospace, and heavy industrial applications. The 50-pin DIN connector’s threaded locking ring and the board’s internal component mounting are designed to survive these extremes.

Q: How many I/O points can the HIOD1H1G support?
A: The HIOD1H1G supports up to 64 additional I/O points. This includes both analog and discrete I/O modules. If you need more than 64 points, you can use multiple HIOD boards, or combine HIOD and HIOB boards to achieve the required capacity.

Q: Does the HIOD1H1G include a breakout board?
A: The HIOD1H1G typically terminates directly to the 50-pin connector. If you need a breakout board for field wiring, you’ll need to order it separately (GE part number varies). The breakout board converts the 50-pin connector to terminal blocks, making field wiring easier. The 5A fuses on the main board protect the field supply rail, regardless of whether you use a breakout board.

Q: What’s the backplane current draw of the HIOD1H1G?
A: The HIOD1H1G draws 1.0A from the 5V backplane rail. The Mark V power supply is rated at 6A on the 5V rail, so the HIOD1H1G is within the limit. If your rack has multiple HIOD boards, check your total backplane current. We recommend keeping total backplane current below 5.5A for margin. The extreme temperature range and shock/vibration rating do not affect the current draw.

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