WOODWARD easYgen-3000 Series (Package P1) Genset Control

Protective measures: It is recommended to connect 2-6A slow melting fuses in series for all voltage inputs, and withstand surge voltages of 2.5kV at 100V and 4.0kV at 400V

(2) Current measurement (CT secondary side adaptation)

Support measurement of three-phase current for generators, single-phase current for power grids, and grounding current. Core specifications:

Rated input: compatible with 1A/5A CT secondary side signals, generator current is connected through terminals 3-8, and grid/ground current is connected through terminals 1-2

Wiring specification: The CT secondary side needs to be grounded at a single point (near the CT end), and the CT terminal must be short circuited before disconnecting the equipment to prevent high voltage caused by an open circuit

Measurement range: The linear measurement range of the generator current reaches 3 times the rated value, and the grid/ground current reaches 1.5 times the rated value, with an accuracy of Class 1

(3) Power and power factor measurement

Power measurement: Based on voltage/current signal derivation, the active power range is -2~2GW, the reactive power range is -2~2Gvar, and the accuracy is 2%. Zero crossing detection is required to ensure measurement accuracy

Power factor: defined from the perspective of a generator, the inductive load displays lag (lg) and the capacitive load displays lead (ld), which can be used as the basis for voltage regulation (capacitive overload outputs boost signal, inductive overload outputs buck signal)

3. Input/output interface configuration

(1) Discrete input (12 channels, terminals 66-78)

Electrical characteristics: Electrical isolation design, supporting positive/negative polarity signals, input resistance ≈ 20k Ω, working voltage 8-40Vdc

Pre allocation function: Core inputs such as DI01 (emergency stop signal), DI02 (automatic start), DI03 (low oil pressure alarm) have predefined functions, and DI07-DI08 are fixed as MCB/GCB feedback signals

Operation logic: Can be configured as normally open (N.O.)/normally closed (N.C.), energized when a fault occurs in the normally open state, and de energized when a fault occurs in the normally closed state

Safety reminder: DI01 is only an emergency stop signal input and cannot be directly used as an emergency stop execution function. It needs to independently implement the EN 60204 standard requirements externally

(2) Relay output (12 channels, terminals 41-60)

Hardware parameters: AgCdO contact material, universal load 2A@250Vac /24Vdc, PILOT load 1A@24Vdc Support long-term stable work

Pre allocation functions: R01 (ready to run), R04 (fuel solenoid valve), R05 (preheating), R07/R09 (GCB/MCB opening command), etc., supporting custom functions through LogicsManager software

Safety requirement: The "Ready to Run" output should be connected in series with the emergency stop function to ensure that the generator circuit breaker is disconnected and the engine stops in case of equipment failure

(4) Analog input/output

Analog input (3 channels, terminals 9-14): supports 0/4-20mA, 0-500 Ω, VDO sensor signals, bipolar wiring accuracy ≤ 1%, unipolar wiring accuracy ≤ 2.5%; Bipolar signal ground to PE, unipolar signal ground to engine ground (terminal 62)

Analog output (2 channels, terminals 15-20): Supports ± 10Vdc, ± 20mA, PWM signals, 20mA output maximum load of 500 Ω, resolution 11-12 bits, signal type can be switched through external jumpers

(5) MPU input (terminals 79-80)

Adaptive sensor: Magnetic electric speed sensor (MPU), input impedance ≥ 17k Ω, maximum input frequency 14kHz

Wiring requirements: The cable shielding layer is only grounded at a single point on the device end, and the MPU end is not grounded; Need to match the number of teeth and speed of the flywheel gear to ensure that the input frequency does not exceed the limit

4. Communication interface configuration

Interface Type Quantity Terminal/Interface Form Core Parameters Application Scenarios

RS-232 1-channel D-SUB DE9 electrical isolation, signal level ± 5V local debugging, point-to-point short-range communication

RS-485 1-channel D-SUB DE9 supports half duplex/full duplex, Modbus protocol for multi device networking and remote monitoring

CAN bus 2-channel D-SUB DE9/IDC electrical isolation, baud rate 10k-1Mbit/s industrial equipment interconnection, maximum distance 2500m (20kbit/s)

Key requirements for CAN bus: use shielded twisted pair cables (such as Lappkabel Unitronic LiyCY), with 120 Ω terminal resistors connected at both ends; Avoid parallel wiring with power cables to prevent electromagnetic interference

Environmental adaptability and compliance certification

1. Environmental tolerance

Temperature range: Operating -20 ℃~70 ℃, Storage -30 ℃~80 ℃, Supports low-temperature deck environment on ships

Vibration shock: sine vibration 5-100Hz (4G), random vibration 10-500Hz (1.04Grms), shock 40G (11ms sawtooth wave), in compliance with EN 60255 and MIL-STD 810F standards

Humidity protection: Stable operation for 5 days under 60 ℃ and 95% RH environment, meeting the requirements of high humidity environment for ships

2. Compliance and Certification

Basic certifications: CE, UL (for general locations), cUL (for easyYgen-3100 only), EMC compliant with EN related standards