Woodward 723PLUS Digital Controller | High-Voltage Dual-MPU Model

Description

• 🌐 Product Overview | This high-voltage digital control hardware from the Woodward 723PLUS series can be programmed for industrial applications requiring two magnetic pickups (MPUs) or proximity switches, featuring dedicated dual-speed input channels for precise prime mover monitoring and control.

Product Specifications & Datasheet

• 📏 Dimensions | 239 mm x 191 mm x 64 mm (9.4 in x 7.5 in x 2.5 in)
• ⚖️ Weight | Approximately 2.3 kg (5.0 lbs)
• 🌍 Country of Origin | United States
• ⚡ Operating Voltage | High voltage AC/DC power supply configurations (typically 88 to 264 VAC / 90 to 150 VDC)
• 🔌 Power Consumption | Max. 30W
• 🌡️ Operating Temperature | -40°C to +70°C (-40°F to +158°F)
• 🖥️ Display Type | Handheld programmer or PC connection via serial port (no onboard display)
• 🔌 Communication Interfaces | RS-232 serial ports for configuration and monitoring, plus LonWorks network communication support
• 📊 Analog & Discrete I/O | Configurable analog inputs/outputs, discrete relay outputs, and dual high-speed MPU/proximity switch input terminals
• 🛡️ Enclosure Protection | Chassis mount, IP20 (requires placement inside a protective control cabinet)

First-Time Operation Checklist

• 🔍 Wiring Verification | Verify all high-voltage power supply, dual MPU/proximity switch sensors, actuator, and control wiring against the installation schematic prior to energizing.
• ⚡ Power Range Check | Confirm that the supplied high-voltage input matches the controller rating label before turning on the power source.
• 📡 Network Setup | Check LonWorks network termination and node connections to ensure proper communication with secondary monitoring equipment.
• ⚙️ Parameter Configuration | Program dual-speed input parameters, speed ranges, failure detection logic, and PID tuning constants using Woodward service software.
• 🧪 Dry Run Testing | Perform a functional test of actuator response and safety trip circuits without fuel pressure to ensure proper signal routing.

Routine Maintenance

• 🧹 Enclosure Inspection | Keep the exterior control housing clean and ensure internal cabinet ventilation filters are free of dust and debris.
• 🔌 Terminal Tightness | Inspect all high-voltage and low-voltage screw terminals annually for secure fit and absence of thermal oxidation.
• 💾 Backup Program | Export and securely archive the controller configuration file whenever control parameters or dual-speed settings are adjusted.
• 🔄 Diagnostic Review | Periodically check error logs, MPU sensor health, and communication status via the configuration software.

Troubleshooting & Common Issues

• ❓ Controller Fails to Power On | Check incoming high-voltage fuses, verify input voltage terminals, and ensure correct polarity.
• ❓ Dual MPU Signal Loss / Error | Inspect magnetic pickup sensor clearance, clear any metallic debris from the probe tips, and check shielded cable grounding on both channels.
• ❓ Speed Reading Discrepancy | Compare primary and secondary MPU frequency inputs in the service software to verify proper sensor calibration and signal integrity.
• ❓ PC Communication Failure | Verify serial cable connections, check baud rate and COM port settings, and ensure correct software protocol selection.