Description
The Woodward 9907-205 is a dedicated, portable Handheld Programmer designed for field configuration, tuning, calibration, and real-time diagnostic monitoring of legacy Woodward control platforms. Primarily utilized with the MSLC (Master Synchronizer and Load Control) and DSLC (Digital Synchronizer and Load Control) series, this programmer also maintains cross-platform compatibility with the 721 Digital Control Overspeed Switch and 723PLUS digital speed control systems. It interfaces directly via a physical serial connection to configure internal operational matrices, set PID dynamics, adjust utility load references, and extract system fault arrays without requiring an external laptop.
Technical Specifications
| Parameter | Value |
| Brand / Manufacturer | Woodward |
| Model Number | 9907-205 |
| Device Classification | Handheld Programmer / Service Tool |
| Series Compatibility | MSLC, DSLC, 721, 723PLUS Control Systems |
| Display Type | 24-character alphanumeric LED |
| Keypad Construction | Tactile membrane keys with distinct programmatic function mappings |
| Communication Protocol | Proprietary serial architecture / CAN bus physical layer links |
| Power Supply Input | 24 V DC (drawn directly from host control serial port) |
| Electrostatic Discharge (ESD) | Up to 15 kV air-discharge protection |
| Operating Temperature | −40 °C to +85 °C |
| Physical Weight | Approximately 500 g to 900 g depending on integrated cable assembly |
Procurement & Commercial Availability
- Condition: New Surplus (Original Box) or Cleaned & Inspected Pre-Owned available. All pre-owned units undergo complete membrane keypad continuity diagnostics and terminal port loop testing before dispatch.
- Warranty: 12-month standard industrial warranty covering component failures and screen degradation under normal field operation.
- Lead Time: In-stock hardware typically packages and ships within 1 to 3 business days.
- Pricing Notice: Listed pricing is indicative of fluctuating secondary automation market dynamics. Contact us for a firm commercial quote including delivery and export documentation.
Field Calibration & Operational Notes
Direct Integration Sequence
The 9907-205 does not require an independent external power supply. It draws its operating power directly from the host controller’s serial interface plug.
- Locate the multi-pin circular or D-sub terminal port labeled “Service Tool” or “Handheld Programmer” on the faceplate of the MSLC/DSLC/723PLUS module.
- Align and plug in the programmer cable. The 24-character LED display will initiate its boot sequence immediately.
- If the display remains dark, check the 24 V DC auxiliary supply rail powering the primary engine/turbine controller.
Remote Load Reference Configuration
In generator synchronization applications using an MSLC controller, field engineers often need to calibrate remote load reference inputs.
Standard Bench Testing Best Practice: To verify calibration on an active loop, navigate the 9907-205 menu structure to the calibration sub-menu, select the designated remote input option, and use the security access key (typically code
49for standard MSLC systems) to unlock modification rights. This prevents accidental field overwrites of active load control limits.
Maintenance & Safe Extraction
The membrane pad on the 9907-205 is rated for harsh power-generation environments, but it is vulnerable to degradation from prolonged exposure to aromatic solvents, synthetic oils, or direct mechanical punctures.
- Hot-Plugging: The programmer is hot-swappable and can be connected or disconnected while the governor or load control system is online.
- Data Integrity: Disconnecting the handheld unit during an active parameter write sequence will cause that specific parameter to revert to its previous configuration value; it will not corrupt the broader execution firmware.
Frequently Asked Questions
Can this unit be used to update the master firmware on an MSLC or DSLC controller?
No. The 9907-205 is designed exclusively for adjusting discrete control setpoints, changing configuration variables, running analog/digital I/O diagnostic checks, and pulling real-time performance profiles. Flashing primary system firmware requires an external PC running Woodward’s proprietary Windows-based tool suites (such as Watch Window or ServLink) linked through a data transceiver.
Why does the display show “Link Error” immediately after plugging the programmer in?
A “Link Error” or blank transmission screen indicates a failure to establish a proper baud rate handshake between the handheld unit and the host controller. Verify that the cable assembly pins are free of oxidation and that the cable has not sustained physical shield damage. Additionally, check if the host module’s serial port has been hardcoded to a non-standard baud rate for communication with an external SCADA system.
Is the 9907-205 interchangeable with Woodward’s software-based Watch Window tool?
Functionally, yes, for most basic adjustment procedures. The handheld programmer covers the same core menu blocks and calibration options as the software-based configurations. However, the software tool allows engineers to plot multi-variable trend charts and save entire system configuration maps as backup text files, while the 9907-205 is optimized for rapid, standalone field modifications.
