2.1 General

• Part Number: 405A743H01

• Manufacturer: Westinghouse / Emerson

• Product Type: Magnetic Tape Drive Module

• Compatible Systems: WDPF DCS (Multibus chassis: 405A675G / 405A685G series)

• Model: Kennedy 9600 (3200 BPI, 1/2‑inch reel‑to‑reel tape)

• Status: Obsolete (EOL)；available as NOS or certified refurbished

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

2.2 Electrical

• Backplane Interface: Multibus (16‑bit data, 24‑bit address)

• Power Input: +5 VDC (backplane), 110 VAC (auxiliary)

• Power Consumption: 28 W max (operating)；12 W (standby)

• Data Transfer Rate: 250 KB/s (synchronous)

• Recording Density: 3200 BPI (bits per inch)

• Tape Speed: 75 IPS (inches per second)

• Error Correction: CRC‑16, longitudinal parity

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

2.3 Physical

• Form Factor: Standard 6U DCS module (rack‑mount)

• Dimensions (W×H×D): 305 mm × 203 mm × 410 mm (12.0 in × 8.0 in × 16.1 in)

• Weight: ≈ 4.5 kg (9.9 lb)

• Mounting: 12‑slot Multibus chassis (rear‑mounted)

• Connectors: Multibus edge connector (backplane), 50‑pin SCSI‑style (tape head), AC power inlet

• Coating: Conformal coated (circuit board)

• Cooling: Forced air (chassis fan, 20–25 CFM required)

2.4 Environmental

• Operating Temperature: 10 °C to +45 °C (50 °F to 113 °F)

• Storage Temperature: −20 °C to +60 °C (−4 °F to 140 °F)

• Relative Humidity: 20% to 80% (non‑condensing)

• Shock/Vibration: IEC 60068‑2‑6 compliant (0.5 g, 10–100 Hz)

• MTBF: > 50,000 hours (25 °C, full load)

3. Main Features

1. High‑Density Magnetic Storage

   • Uses 3200 BPI 1/2‑inch tape for up to 80 MB uncompressed capacity; ideal for legacy DCS program and data backup.

2. WDPF System Compatibility

   • Native support for WDPF controller boot, application loading, and historical data archiving; integrates seamlessly with Multibus chassis.

3. Hot‑Swap & Redundancy Ready

   • Online replacement without chassis shutdown; supports redundant tape drive configurations for critical systems.

4. Robust Industrial Design

   • Heavy‑duty metal enclosure, shock‑mounted tape head, and conformal coating ensure reliability in power and process plants.

5. Front‑Panel Diagnostics & Controls

   • LED status indicators, tape reel controls, and error codes for quick operation and troubleshooting.

6. Legacy Data Migration Support

   • Critical for WDPF‑to‑Ovation upgrades; enables recovery of old programs and historical data from magnetic tape archives.

4. Applications

• Legacy DCS Maintenance: WDPF system backup/restore, program storage, and historical data logging.

• Power Generation: Thermal and nuclear plants with WDPF control systems.

• Process Industries: Petrochemical, pulp & paper, and water treatment facilities using legacy Westinghouse controls.

• System Upgrades: Data migration from WDPF to Ovation or modern DCS platforms.

• Archiving: Long‑term storage of process data, recipes, and control logic.

5. Installation Instructions

5.1 Pre‑Installation Safety

• ESD Protection: Use an ESD wristband when handling the module.

• Power Off: Shut down the DCS chassis; disconnect AC power; wait 5 minutes for discharge.

• Inspection: Check for bent pins, damaged connectors, or physical damage to the tape drive or enclosure.

5.2 Installation Steps

1. Select Slot: Choose a dedicated 6U Multibus slot (typically rear chassis) in the 405A675G/685G chassis.

2. Insert Module: Align with chassis guides; insert firmly until fully seated in the backplane connector.

3. Secure Module: Tighten front‑panel screws to ensure grounding and mechanical stability.

4. Connect Power: Plug in 110 VAC auxiliary power to the module’s inlet.

5. Load Tape: Insert a 1/2‑inch reel‑to‑reel magnetic tape (Kennedy 9600 compatible) into the drive; thread tape per front‑panel diagram.

6. Power On: Reconnect AC power to the chassis; verify LED status: PWR (Green) ON, RDY (Green) ON.

7. Configure Software: Use WDPF engineering tools to set tape drive parameters (density, speed, timeout).

8. Test Operation: Perform a write/read test to confirm data integrity and drive functionality.

6. LED Indicators & Controls

• PWR (Green): ON = Backplane +5 VDC present; OFF = No power or faulty backplane.

• AC (Green): ON = 110 VAC auxiliary power present; OFF = No AC power.

• RDY (Green): ON = Drive ready (tape loaded, no faults); Blinking = Busy (read/write/rewind).

• ERR (Red): ON = Drive fault (tape error, head failure, or communication error); Blinking = Critical fault.

• TAPE (Amber): ON = Tape loaded; Blinking = Tape movement.

• Controls: Front‑panel LOAD/UNLOAD, REWIND, and EJECT buttons for manual tape handling.

7. Maintenance & Troubleshooting

7.1 Preventive Maintenance (Monthly)

• Visual Inspection: Check tape reels for wear, damage, or misalignment; inspect connectors for dirt/corrosion.

• Cleaning: Use approved tape head cleaning cartridge to remove oxide buildup; clean air vents with low‑pressure compressed air (≤ 2 bar).

• Tape Inspection: Examine magnetic tape for scratches, creases, or shedding; replace damaged tapes immediately.

• Operational Test: Run full write/read/verify cycle with a test tape; compare results to baseline.

7.2 Troubleshooting

• PWR LED OFF: Check backplane +5 VDC power supply (405A720H series); verify chassis circuit breaker; inspect Multibus connector for bent pins.

• AC LED OFF: Check 110 VAC power cable and outlet; verify internal fuse (accessible via side panel).

• RDY LED OFF:

  1. Ensure tape is properly loaded and threaded.

  2. Clean tape head with cleaning cartridge.

  3. Check for tape damage or incorrect tape type.

• ERR LED ON:

  1. Verify tape compatibility (3200 BPI, Kennedy 9600‑spec).

  2. Clean tape head and path.

  3. Check for communication errors with WDPF controller.

  4. Replace module if fault persists after power cycle.

8. Storage & Handling

• Packaging: Store module in original anti‑static bag and foam; keep in cool, dry, dust‑free area.

• Temperature: −20 °C to +60 °C; avoid direct sunlight and heat sources.

• Handling: Hold module by metal enclosure only; avoid touching tape head or connectors.

• Tape Storage: Keep magnetic tapes in sealed cases; store vertically in climate‑controlled environment.

• Transport: Use shock‑absorbent packaging; remove tape reels before shipping to prevent damage.

9. Disclaimer