Specifications

• Manufacturer: Westinghouse (Emerson)

• Model: 3A99977G01

• Type: WEStation DIOB to MDX Interface Cable

• System Compatibility: Legacy WDPF, Ovation DCS (WEStation workstations)

• Function: Connects DIOB I/O board to MDX multiplexer module

• Cable Type: Shielded multi‑conductor, industrial‑grade

• Connector Type: Proprietary Westinghouse/Emerson D‑series

• Length: Standard factory length (custom lengths available upon request)

• Insulation Rating: 300 V, 80 °C

• Shielding: 100% foil + braid, EMI/RFI suppression

• Impedance: Controlled impedance for high‑speed differential signaling

• Environmental: −20 °C to +70 °C, humidity 5–95% non‑condensing

• Weight: Approx. 0.5 kg

• Features: Direct replacement for original WEStation cabling; ensures signal integrity; reduces ground‑loop issues; easy field installation

Key Features

• OEM‑quality replacement: Matches original Westinghouse specifications for drop‑in compatibility.

• Robust shielding: Minimizes electromagnetic interference in high‑noise industrial control rooms.

• Secure connections: Positive‑lock connectors prevent accidental disconnection during vibration.

• Long‑term reliability: Industrial‑grade materials for extended service life in legacy DCS installations.

• Plug‑and‑play: No configuration required; restores communication between DIOB and MDX upon installation.

Applications

• Power plants: WEStation workstation I/O communication for boiler, turbine, and balance‑of‑plant controls.

• Petrochemical: Process control DCS workstation cabling for refinery and chemical plant automation.

• Legacy system maintenance: Spare part replacement for existing WDPF/Ovation WEStation installations.

Related Part Numbers

• 3A98688G02/G03/G04: WEStation SCSI cables (VME chassis front)

• 3A98720G18: WEStation green cable (VME Sparc front)

• 9115A09G12: Q‑Line Q‑Line card cable (straight plug)

Notes

• Legacy component: Supplied exclusively as a replacement part for installed WEStation workstations.

• For new Ovation systems, Emerson recommends modern I/O cabling and workstations.

• Documentation: A PDF datasheet and installation guide are available for 3A99977G01.