1. General Information

• Part Number: 1840-3

• Manufacturer: XYCOM Automation (Schneider Electric / Pro‑face)

• Product Type: Industrial Processor Board (CPU Board)

• Status: Legacy EOL (Discontinued; available as refurbished/used)

• Weight: Approx. 3 lb (1.4 kg)

2. Product Description

3. Hardware Specifications

Processor & Memory

• CPU: Intel Pentium III (Socket 370), up to 1.26 GHz (standard 1.0 GHz)XYCOM

• Cache: 256 KB (standard) / 512 KB (optional)XYCOM

• System Bus: 133 MHzXYCOM

• Memory: 256 MB SDRAM (standard), up to 512 MB (max)XYCOM

• Storage Interface: IDE (supports 2.5” HDD/SSD)

I/O Ports

• Ethernet: 1× 10/100 BaseT RJ45 portXYCOM

• Serial: 1× RS‑232 (COM1); 1× RS‑232/485 (COM2, switchable)XYCOM

• Parallel: 1× LPT (DB25)XYCOM

• USB: 2× USB 1.1 portsXYCOM

• PS/2: Keyboard & mouse portsXYCOM

• Video: VGA (DB15, onboard graphics)

• Audio: Line in/out, mic in

Expansion Slots

• 3× ¾‑length slots: 1 PCI, 1 ISA, 1 PCI/ISA (shared)XYCOM

• 1× ½‑length PCI slot (DOC 2000 socket)XYCOM

Power Requirements

• Input: 120/240 VAC (50/60 Hz, switchable) or 24 VDC

• Max Current: 4.0 A (AC)

• Protection: Overvoltage, overcurrent, surge, short‑circuit

4. Environmental Specifications

• Operating Temp: 0 °C to +50 °C

• Storage Temp: −40 °C to +85 °C

• Humidity: 10%–90% non‑condensing

• Vibration: 0.15 g (5–2000 Hz)

• Shock: 2.5 g peak (operating)

• Altitude: Up to 10,000 ft (3,048 m)

5. Compatibility

• Systems: XYCOM 1506, 1612, 1613, 1614 industrial rack‑mount PCs

• Backplanes: XYCOM 14‑slot passive backplane (7 PCI / 3 ISA)

• OS Support: Windows 98/2000/XP, DOS, QNX, VxWorks

• Certifications: CE (EN 55022 Class A, EN 61000‑6‑2), FCC Part 15 Class A

6. Installation & Maintenance

1. Mounting: Install in XYCOM industrial chassis (1506/1600 series) with proper grounding.

2. Cabling: Separate power and signal cables to avoid EMI.

3. Cooling: Ensure adequate airflow; avoid high‑temperature operation.

4. Handling: ESD protection required; do not expose to moisture or dust.

5. Maintenance: Clean connectors annually; inspect for component wear.

7. Availability

• Original: Discontinued by Schneider Electric.

• Spare Parts: Refurbished, tested units and used surplus boards available from industrial vendors.

• Compatibility Notes: Replaced by newer XYCOM/Pro‑face CPU boards (e.g., 1840, 1840‑4).