Description
⚙️ Product Specifications (Datasheet)
| Parameter | Value |
| Model / Part Number | 723 Series (P/N: 9907-031) |
| Device Type | Digital Microprocessor-Based Speed Control |
| Weight | 6 lbs 8 oz (Approx. 2.95 kg) |
| Housing Material | Protective Sheet Metal Chassis / Enclosure |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Power Supply Voltage | High Voltage Version (90 to 150 VDC or 88 to 132 VAC) |
| Power Consumption | 40 W nominal |
| Speed Sensor Inputs | 2 Independent Channels (Magnetic Pickup / MPU) |
| Actuator Drivers | 1 or 2 Actuator Outputs (0–200 mA or 4–20 mA) |
| Communication Ports | Dual RS-422 / RS-485 Serial Communications |
🚀 Standard Operating Procedure
- 🛠️ Pre-Start Loop Checks: Verify that the protective metal chassis is properly grounded, wiring terminal screws are tight, and power supply wiring matches the High Voltage input range (88–132 VAC / 90–150 VDC).
- ⚡ Power On Sequence: Switch on the control supply circuit breaker. Confirm front panel status LEDs illuminate and internal self-diagnostics pass without active error codes.
- 🕹️ Control Mode Setup: Choose local discrete contact control or remote serial control to set initial operational speed references.
- 🏎️ Prime Mover Start: Initiate the start cycle. The 9907-031 tracks speed feedback through MPU sensors and executes configured dynamic acceleration ramps up to rated speed.
- 📊 Operational Monitoring: Monitor real-time speed feedback, fuel demand output percentage, and auxiliary I/O statuses using Watch Window software or a Handheld Programmer.
- 🛑 Controlled Shutdown: Initiate the normal stop sequence via discrete inputs or serial commands to smoothly ramp fuel actuators down to zero before stopping the prime mover.
⚙️ Parameter Configuration Guide
- 💻 Connect a PC running Woodward Watch Window software or attach a Handheld Programmer (HHP) to the serial service port.
- 🔑 Log in using the authorized security passcode level to unlock parameter tuning and setup menus.
- 📑 Navigate through menu blocks, including Speed Dynamics, PID Gain/Reset, Actuator Limits, and Torsional Filtering.
- ✏️ Modify the desired parameters to match prime mover dynamic requirements, and test control loop response in real time.
- 💾 Select “Save Values” to store all updated settings into non-volatile EEPROM memory prior to disconnecting software.
🔄 Manual / Automatic Mode Switching
- 🖐️ To Select Manual Mode: Actuate the designated manual/droop discrete contact input or set a manual override in Watch Window. Manual mode allows local operators to adjust speed setpoints and fuel limiters manually.
- 🤖 To Select Auto Mode: Toggle control inputs back to Automatic mode. The controller automatically maintains closed-loop speed governing or responds to remote SCADA/DCS commands over serial communications.
❓ Frequently Asked Questions (Q&A)
- ❓ Q: What are the main physical characteristics of part number 9907-031?
💡 A: Weighing 6 lbs 8 oz (approx. 2.95 kg), it features a fully enclosed metal chassis that completely protects the internal PCB while withstanding industrial operating temperatures up to 70°C (158°F).
- ❓ Q: How are software parameters tuned on this 723 model?
💡 A: Tuning and diagnostic monitoring are performed digitally using Woodward’s PC-based Watch Window software or a plug-in Handheld Programmer (HHP), eliminating manual potentiometer adjustments.
- ❓ Q: What input power specification does model 9907-031 require?
💡 A: Model 9907-031 utilizes a High-Voltage power input option, operating continuously on either 88 to 132 VAC or 90 to 150 VDC.
