Digital guide
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Woodward 8405-307
- Product Name: ST-125 Digital Governor Control Unit
- Product Description: A compact, integrated digital control system designed for Stanadyne DB-4 series fuel pumps and diesel engine speed regulation. Combines governor, sequencing, and operator interface functions.
- Technical Specifications:
- Power Supply: 24 VDC (8–32 VDC range)
Detailed content
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- Speed Signal Input: Magnetic pickup (1429–8740 Hz, 1–30 VAC rms)
- Regulation Accuracy: ±0.25% of rated speed (±0.50% over temperature range)
- Operating Temperature: -40 °C to +70 °C (control); -30 °C to +85 °C (actuator)
- Certifications: CE, UL/cUL (ordinary locations, 70 °C ambient)Woodward
- Vibration Resistance: US MIL-STD-810C, Curve J, 5 G (5–2000 Hz, 3 axes)
- Key Features:
- All-In-One Design: Integrates governor, sequencer, operator panel, and first-out indicator to minimize external components.
- Field Configurable: Allows on-site adjustment of engine parameters via software, reducing downtime.
- First-Out Indication: Simplifies troubleshooting by identifying the root cause of alarms/shutdowns.
- Hot-Plug Support: Enables replacement without system shutdown (depending on configuration).
- Applications:
- Industrial Diesel Engines: Prime movers for pumps, compressors, and irrigation systems.
- Standby Power: Generator sets for commercial buildings and remote sites.
- Off-Highway Equipment: Construction and mining machinery with Stanadyne DB-4 pumps.
