Description
The Woodward 8273-1011 is a microprocessor-based 2301E Digital Load Sharing and Speed Control module designed for prime movers, such as diesel or gaseous engines. This unit regulates engine speed and manages proportional load allocation when operating multiple generators in parallel grid networks.
On a recent prime-power generator commissioning project, we deployed this exact variant to manage load transitions across a multi-engine microgrid. The 2301E architecture operates as a functional, digital replacement for legacy analog 2301A systems, using an adaptive speed-sensing algorithm to maintain transient stability during heavy load steps. Well, technically it handles isochronous, droop, and base-load distribution configurations seamlessly, but only if you map the gear teeth count and magnetic pickup unit (MPU) frequency metrics accurately via the 2301E ToolKit service interface (verify the hardware dip-switch assignments with the OEM installation manual before cranking the engine).
Inventory Condition and Global Procurement Options
- Product Condition: New Original (Factory Sealed surplus)
- Warranty: 12-month comprehensive replacement warranty
- Availability: In stock; ready for export within 24 to 48 hours
- Pricing Notice: The listed cost serves as a standard industry baseline reference. Final commercial transaction terms remain dependent on regional stock levels, software configuration utilities, and bulk procurement tiers. Contact our global trade desk for a formal, itemized quotation.
Industrial engine governors contain discrete analog filtering sub-boards vulnerable to strong structural vibration. We package each unit in original factory anti-static enclosures before placing them into double-walled export boxes layered with shock-absorbent foam inserts to withstand intercontinental transit pathways.
Technical Specifications
| Parameter | Value |
| Manufacturer | Woodward (Fort Collins, CO, USA) |
| Part Number | 8273-1011 |
| Base Platform | 2301E Digital Control (Ordinary Locations) |
| Operating Power Supply | 18–36 V DC nominal range (SELV); 20 W maximum draw |
| Steady-State Speed Band | ±0.25% of rated speed |
| MPU Input Frequency | 100–25,000 Hz range (90–3600 rpm prime mover matching) |
| Discrete Channels | 8 Switch Inputs / 4 Configurable Relay Driver Outputs (200 mA max) |
| Analog Interface | 2 Configurable Inputs / 1 Dedicated Actuator Driver Output |
| Serial Interfaces | 1 x RS-232, 1 x RS-422 (Supports Modbus RTU protocol) |
| Thermal Limits | Operating: −40 to +70°C; Storage: −40 to +105°C |
The front panel layout features dedicated status LEDs that facilitate tracking of power rails and serial network communications. In our field experience, the low-current PWM actuator output channel is highly versatile—it interfaces directly with Woodward F-Series, L-Series, or P-Series actuators without necessitating an external driver card assembly.
Cross-Border Shipping and Customs Regulations
Moving infrastructure-critical engine governors across borders requires strict adherence to international trade guidelines. Because the 8273-1011 incorporates digital data-logging and specialized automation networking controls used in backup utility networks and remote mining infrastructure, it undergoes thorough export inspections. Our global logistics team completes the customs clearance manifests, applying the precise Harmonized System (HS) Tariff Code (9032.89) to avoid unnecessary administrative delays at international inspection hubs.
Are you managing an emergency generator asset failure or a critical facility shutdown? Opting for priority air express through carriers like DHL, FedEx, or UPS ensures the controller passes through regional sorting nodes with high-priority tracking status, typically clearing customs barriers within 48 hours of arrival. We accommodate corporate procurement structures by operating under flexible EXW, FCA, and DAP Incoterms to match your asset management frameworks.
Frequently Asked Questions
Is the 8273-1011 backward compatible with old analog 2301A or 2301D installations?
The 8273-1011 shares the identical physical mounting footprint and terminal block arrangements as the older digital 2301D models, making it a physical drop-in replacement. However, if retrofitting from an older analog 2301A unit, you will need to re-verify terminal terminal point configurations and adjust the internal soft load parameters via the PC-based ToolKit program rather than turning physical trim potentiometers.
What happens if the magnetic pickup unit (MPU) speed signal drops out during operation?
The 2301E incorporates an integrated hardware-and-software overspeed protection layer alongside an MPU signal failure detection circuit. If the pickup signal drops below minimum operating frequency thresholds while the engine is running under load, the controller immediately cuts the current to the actuator output, forcing a safe engine shutdown to prevent runway failure—though your mileage may vary depending on whether your fuel solenoid loop runs an independent safety override.
