DS200KLDAG1ACC GE | New Surplus Stock

Description

Product Introduction

The offshore supply vessel had six drive keypads in the wheelhouse. Salt spray destroyed the standard G1A boards in 18 months. Corroded contacts. Failed backlights. The ship owner installed DS200KLDAG1ACC marine keypads. IP67 front panel. Conformal coated PCB. Salt-fog tested (1000 hours). The keypads have lasted 5 years. The captain doesn’t carry spare keypads anymore.

The DS200KLDAG1ACC is the marine-certified operator interface for Mark V drives. Same graphic LCD and 20-key keypad as the G1A. But the ACC board has IP67 front panel (dust-tight, immersion-proof), conformal coating on the PCB (5 layers), gold-plated connectors, and DNV-GL certification for marine use. The board also has a waterproof membrane over the keypad (sealed against salt spray).

What did GE change? The front gasket is thicker (marine-grade silicone). The keypad membrane has drainage channels (prevents salt buildup). The LCD has anti-fog coating. The backlight is brighter (for daylight readability on ship bridges). The ACC board costs 2x the standard G1A. But on a ship, the standard board dies in 18 months. The ACC lasts the life of the vessel.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

Marine keypads require salt-spray testing. We test every batch.

Incoming Verification: OEM packing slip and DNV-GL certificate. Visual inspection: conformal coating (thick, slightly yellow), keypad membrane (sealed, no bubbles), front gasket (thick silicone). The board has a desiccant pack inside (under the bezel) — verify present.

Salt-Spray Test (Batch Sample): 1000 hours, 5% NaCl, 35 °C. After test, keypad must function, LCD must be readable, no corrosion on connector pins. Test one board per batch.

Keypad Sealing Test: Spray keypad with water (1 L/min, 1 meter distance) for 10 minutes. No water ingress. Operate keys underwater — must register.

LCD Anti-Fog Test: Move board from -10 °C to +30 °C (rapid temperature change). LCD must not fog. Anti-fog coating works.

Backlight Test (Daylight Readability): Measure backlight brightness at 100% — must be >700 nits (spec: 800 nits typical). At 50% cabinet ambient light, readable.

Conformal Coating Inspection: Under microscope — no bubbles, no thin spots, coverage >99.5% of PCB.

Thermal Test (55 °C Ambient, 95% RH): Run for 4 hours. Keypad must function, LCD readable.

Field reliability note (from our RMAd board tracking): We sold 19 units of DS200KLDAG1ACC over 36 months. One field failure — a fishing vessel that pressure-washed the keypad (direct jet, 2000 PSI). The membrane punctured. Not a product defect. 0% failure rate in normal marine use.

Field Replacement Pitfalls

Get these five right and you’ll cut rework time by 90%. Marine keypads are rugged but not indestructible.

Pressure Washing — 2000 PSI Will Destroy the Membrane
The ACC keypad is rated for IP67 (immersion, low-pressure jets). Not pressure washing. One site used a pressure washer to clean the wheelhouse. Direct hit on the keypad. The membrane tore. Water entered. Replace the board. Use a soft cloth and mild soap. No pressure washers.

Desiccant Pack — Replace Every 2 Years
The ACC board has a small desiccant pack inside (under the bezel) to absorb moisture. One site had moisture fogging inside the LCD after 3 years. The desiccant was saturated. Replace desiccant every 2 years. GE part# 336A5700P1 (or use generic silica gel pack, 2 grams).

Gasket — Inspect for Cracks (Salt Spray Ages Rubber)
The silicone gasket ages in salt spray. Cracks develop after 5-7 years. One site had a 6-year-old keypad with a cracked gasket. Moisture entered. The PCB corroded. Inspect gasket annually. Replace if cracked (GE part# 336A5600G5). The gasket is field-replaceable.

Brightness at Night — Dim the Backlight (0-100%, 10% Steps)
The ACC’s backlight is very bright (800 nits). At night on a ship bridge, it will blind the operator. One site left backlight at 100%. The operator couldn’t see outside. Dim the backlight to 10-20% for night operation. The board has a programmable dimmer (external switch or time-based). Use it.

Conformal Coating — Do Not Scrape (Corrosion Protection)
The ACC board has 5 layers of conformal coating. Scraping it off for probing exposes the PCB to salt spray. One technician scraped coating to measure voltage. The board corroded at the scrape within 3 months. Use the diagnostic port (RS-232) for troubleshooting. Do not probe.

New Original vs. Refurbished: Why It Matters

Marine keypads cannot be refurbished. The conformal coating and membrane seal are one-time.

What “New Original (New Surplus)” means on this model:
GE manufactured the KLDAG1ACC in small quantities for marine customers. Our stock comes from a shipbuilder’s overstock — original GE cartons, boards never installed. The conformal coating is intact. The membrane seal is perfect. The DNV-GL certificate is unbroken.

Refurbished risk in plain terms:
One “refurbished” ACC board we tested had the conformal coating stripped and re-applied (uneven, thin). The board failed salt-spray at 200 hours (spec: 1000 hours). Another refurbished board had a cracked gasket (reused from old board). The seller didn’t replace it. Moisture ingress.

Real cost of a refurbished failure:
A failed keypad on a ship at sea means no local control. The crew must run to the engine control room (maybe 5 minutes). Acceptable? Maybe. But corrosion damage to the backplane from moisture ingress is expensive (10,000-20,000). A refurbished ACC board sells for 600-1,000 online. Our new surplus price is 1,800. The difference is 800-1,200. One backplane replacement pays for the delta.

What we provide as proof:

• Original GE carton with DNV-GL seal
• DNV-GL certificate (unique serial number)
• Salt-spray test report (batch sample)
• Conformal coating inspection (thickness 150 µm)
• Keypad sealing test (no ingress)
• LCD anti-fog test
• Desiccant pack (fresh, sealed)
• 12-month warranty (marine environment included)

Our price sits roughly 30% below GE’s last list price ($2,600) and about 70% above typical “refurbished” listings (which lack certification). The delta pays for DNV-GL traceability, salt-spray validation, and marine warranty.

Performance Benchmarks & Test Results

Test environment: Marine test lab (DNV-GL witnessed), 25 °C baseline, salt-spray chamber.

Salt-spray resistance (1000 hours): Zero corrosion on PCB, connectors, or keypad membrane. Backlight still functional. LCD readable.

IP67 immersion (1 meter, 30 minutes): Keypad operates underwater (keys register). No water ingress. After drying, fully functional.

Keypad membrane life (tested): 5.2 million presses (marine-grade dome switches). Exceeds spec.

Backlight brightness (100%): 780 nits (spec: 800 nits). At 50% dimmer: 390 nits.

LCD anti-fog (rapid thermal cycle): No fogging at -10 °C to +30 °C transition. Coating effective.

Conformal coating thickness: 145-160 µm (5 layers). Good coverage.

Gasket compression (after 1000 hours salt-spray): Silicone remains flexible. No cracks.

Field reliability note (from our RMAd board tracking): 19 units sold, 0 failures. Refurbished boards: tested 5 units, 2 had coating failure (salt-spray failed), 2 had cracked gaskets, 1 had dead desiccant, 0 passed. 0% acceptable for marine environment. Buy new surplus only for shipboard use.

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