WOODWARD 8273-1011 (2301E) is a digital speed and load sharing controller, designed for precise speed control of diesel/gas engines and generators, as well as load sharing among multiple parallel machines. It can also be used for speed control of steam turbines and industrial drives.
1、 Model and positioning
Model: 8273-1011 (2301E series)
Brand: WOODWARD
Full name: 2301E Digital Load Sharing&Speed Controller
Core identity: Generator/prime mover digital speed controller+load distributor
Typical scenarios: power plants, ships, oil fields, factory backup power sources (parallel/grid connected)
2、 Core function (speed control as the main focus)
High precision speed regulation (speed control)
Receive MPU magneto electric speed sensor (100-25000 Hz)
Speed range: 500-3600 RPM (software adjustable)
Steady state speed regulation rate: ± 0.25% (synchronous/error free); 0-10% (adjustable sag)
Output 4-20 mA/0-200 mA to drive actuator (throttle/guide vane)
Multi machine load sharing (parallel operation)
Up to 32 generators can be connected in parallel, and the active power will be automatically divided equally
Control modes: Isochronous, Droop, Base Load, Peak shaving
Load distribution accuracy: ± 1% of rated load
Protection and Interlocking
Overspeed protection, critical speed avoidance, zero speed detection
10 alarm DI, 10 trip DI, relay output
Self diagnosis and alarm of sensor/power/communication faults
Communication and Configuration
Interface: RS-232, RS-422/485, supports Modbus RTU
PC software configuration: setting speed PID、 Parallel parameters and I/O functions

3、 Key technical parameters
Power supply: 18-36 VDC (typical 24 VDC), ≤ 600 mA
Speed input: 2-channel redundant MPU, 100-25000 Hz
Analog input: 8 channels (4-20 mA/0-10 V, configurable)
Analog output: 2 channels (4-20 mA, driving actuators/valves)
Switching input: 20 DI channels (including trip, alarm, remote control)
Relay output: 8-way C-type contacts
Temperature: -40 ℃ to+70 ℃
Size/Weight: Approximately 500 × 400 × 150 mm, approximately 3.5 kg
Certification: CE, UL, RoHS, Partial Explosion proof Zone Certification
4、 The difference between «water level controller» and «water level controller»
Main business: speed+load control (generator/prime mover)
Side job: Configurable PID circuit, connected to water level/pressure signals, output control valve, but not a dedicated water level controller
contrast:
8273-1011: Speed regulation+parallel operation as the main approach, with process control as a supplementary measure
Specialized water level controller: designed specifically for three impulse control of steam drum/water tank water level
5、 Typical applications
Diesel/gas generator: single machine stable speed, multi machine parallel load sharing
Steam turbine: speed control, grid connection, load distribution
Ship power station: synchronous operation of multiple machines, anti reverse power
Industrial drag: speed regulation of compressors, pumps, and fans