Key Specifications

• Model: 405A689G01

• Manufacturer: Westinghouse / Emerson

• Compatible Systems: WDPF, Ovation DCS

• Type: SMS 8007 Disk Controller Board

• Function: Disk storage control, data communication

• Bus Interface: MultiBus (compatible with WDPF/Ovation backplane)

• Power Supply: +5 VDC, ±12 VDC (from backplane)

• Dimensions (W×H×D): Standard 6U DCS module size

• Weight: Approx. 0.8 kg

• Status: Obsolete (EOL)；available as NOS (New Old Stock) or refurbished

• Warranty: 12 months (refurbished)；24 months (NOS)

Main Features

• Dedicated disk control – manages data read/write operations for DCS storage devices.

• High-speed MultiBus communication – ensures fast and reliable data transfer with the main controller.

• Industrial-grade reliability – designed for continuous operation in harsh industrial environments.

• Full legacy compatibility – works with existing WDPF/Ovation systems for maintenance and migration.

• Hot-swap support – can be replaced online without system shutdown (system-dependent).

Applications

• Power Generation: Thermal, nuclear, combined-cycle power plants (WDPF/Ovation DCS).

• Process Industries: Petrochemical, pulp & paper, cement, water treatment facilities.

• DCS Maintenance: Replacement controller board for legacy WDPF/Ovation installations.

Related Models

• 405A689G01: SMS 8007 Disk Controller Board (base model)

• 405A689G03: SMS 8007 Disk Controller Board (revised version)

• 405A675G series: 12-slot MultiBus chassis (for module mounting)

• 405A685G series: 12-slot MultiBus chassis (revised chassis)

Installation (Manual Excerpt)

1. Power off the DCS chassis and wait 5 minutes for capacitors to discharge.

2. Insert the 405A689G01 board into an available MultiBus slot.

3. Ensure the board is fully seated and secured with front-panel screws.

4. Connect disk storage cables to the board’s interface connectors.

5. Power on the chassis and verify the board’s LED indicators.

Maintenance

• Quarterly Inspection: Check connectors for dirt/corrosion; verify cable connections.

• Cleaning: Use dry, low-pressure compressed air to clean the board surface and connectors.

• Safety: Disconnect all power before servicing; avoid static electricity damage.

LED Indicators

• Green (Power): ON = normal power supply.

• Yellow (Activity): Blinking = data transfer in progress.

• Red (Fault): ON = board/disk communication error.

Disclaimer