Key Specifications

• Model: 405A675G33

• Manufacturer: Westinghouse / Emerson

• Compatible Systems: WDPF, Ovation DCS

• Type: 12‑slot MultiBus chassis (backplane assembly)

• Included: Backplane, card guides, connectors, and 7381A61G01 daughterboard

• Input Voltage: 115 VAC (power supply integrated)

• I/O Capacity: Up to 12 modules

• Mounting: Standard 19” rack mount

• Dimensions: ~483 × 133 × 280 mm

• Weight: ~4.5 kg

• Status: Obsolete (EOL); available as NOS or refurbished

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

Main Features

• 12‑slot design: Accommodates up to 12 DCS modules (power, CPU, I/O).

• MultiBus backplane: High‑speed parallel bus for module communication.

• Integrated AC power: 115 VAC input powers backplane and modules.

• Rugged construction: Industrial‑grade, suitable for harsh environments.

• Hot‑swap support: Modules can be replaced online (system‑dependent).

• Fully compatible: Works with legacy WDPF and Ovation hardware.

Applications

• Power generation: Thermal, nuclear, combined‑cycle plants (legacy WDPF/Ovation).

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

• DCS migration & maintenance: Spare chassis for existing WDPF/Ovation systems.

Related Models

• 405A675G21: 4‑slot power supply chassis (24 VDC, 10 A).

• 405A672H01: DIN‑rail power supply (24 VDC, 10 A).

• 405A662G01/G02: Older slot‑mount power supplies (13 VDC).

LED Status (on modules, not chassis)

• Green (Power): On = module powered normally.

• Red (Fault): On = module/backplane fault.

Maintenance & Safety

• Routine check: Inspect backplane connectors, card guides, and grounding quarterly.

• Cleaning: Use dry, low‑pressure air to remove dust from slots and connectors.

• Safety: Disconnect AC power before inserting/removing modules; wait 5 minutes for discharge.