I. Basic Parameters

Model Name: 8440-2088 = easYgen-3500XT-P2 (P2 high-end CHP cogeneration version, different from P1 standard version)

Power Supply: DC8～32V (12/24V diesel / gas generator battery universal)

Appearance: Embedded hole installation on the panel, LCD liquid crystal + side edge film buttons

Operating Environment: -20℃～+70℃, altitude ≤ 4000m without capacity reduction

Voltage Direct Measurement: Maximum direct connection to 690VAC three-phase voltage, no need for external PT voltage transformer

Frequency Acquisition: 40～85Hz (50/60Hz universal), supports 3P3W/3P4W / single-phase full connection mode

Board-level IO Configuration (P2 Expansion Model)

Switching Input DI: 23 programmable isolated passive inputs (oil pressure, water temperature, shutdown fault, circuit breaker position)

Relay Output DO: 22 C-type passive relays (start-stop solenoid valve, closing-opening, alarm output)

Analog FlexAI: 3 universal inputs (4-20mA / resistance-type temperature oil pressure sensor / 0-5V)

Analog AO: 2 4-20mA speed control output (connected to Woodward EPG/EG series electronic speed control board)

 Communication Interfaces (Unique Expansion Slot of P2)

CAN Bus: Peer-to-peer parallel operation of the unit, CANopen load distribution, multi-unit active power reactive power distribution

Modbus-RTU: Remote acquisition of parameters connected to DCS/SCADA central control

Dual Network Ethernet: Redundant Ethernet networking, supports GC3000XT centralized monitoring, up to 496 unit clusters controlled

Reserved expansion card slot, optional Profibus/DNP3 and other communication cards (P1 version has no expansion slot)

Core Exclusive Functions (P2 = CHP cogeneration dedicated)

CHP / Waste Heat Generation (Cogeneration): Grid-connected for electricity sale, waste heat联动 unit load regulation， closed-loop thermal load following power generation (P1 has no this function)

Dual Bus Phase Sequence Monitoring： Dual-phase three-phase voltage， phase sequence， phase angle real-time comparison on the grid side bus + generator bus， preventing parallel connection phase error short circuit

Grid Mode： Parallel operation with grid power， island operation， multi-unit parallel connection， ATS dual power switching (AMF)， closed-loop soft loading / soft unloading

Full Protection Logic： Overvoltage， undervoltage， overfrequency， undervoltage， reverse power， overcurrent， overspeed， water temperature oil pressure shutdown protection， built-in relay protection algorithm

Simple PLC Programmable： Internal logic customization， no need for additional PLC to achieve waste heat interlock control

Differentiation of Series Models

8440-2088 (P2)： CHP cogeneration， dual bus measurement， IO expandable， with communication slot， 690V direct measurement (main force grid / cogeneration project)

8440-2087 (P1)： Standard version， no CHP， no dual bus， no expansion card slot， ordinary multi-unit parallel operation

8440-2082： 3200XT model， single-unit parallel operation for small and medium-sized units， simplified IO version

Application Scenarios

Natural gas / biogas cogeneration power station， gas power generation， gas internal combustion unit waste heat power station， factory self-contained grid-connected power station， oilfield associated gas power generation unit， large data center backup parallel power supply