Model: DYN2-94025-004
Product Overview
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Datasheet Preview
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Commercial Path
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Technical Dossier
The DYN2 platform succeeded Woodward's earlier analog EG (Electronic Governor) and UG (Utility Governor) product lines. The transition to digital control introduced microprocessor-based PID loop management, replacing potentiometer-tuned analog circuits with software-configurable gain parameters. Early DYN2 units communicated via discrete I/O and 4–20 mA analog signals; later revisions incorporated RS-232 and RS-485 serial interfaces for integration with SCADA and DCS platforms.
The series underwent incremental hardware revisions across its production lifecycle. Key architectural changes included migration from EPROM-based firmware storage to flash memory (enabling field firmware updates), enhanced EMI shielding for compliance with IEC 61000-4 immunity standards, and expanded input voltage tolerance ranges. Compatibility between hardware revisions is generally maintained at the connector and signal level, though firmware versions must be matched to specific hardware generations to ensure correct governor response curves.
As of 2026, the DYN2 series is in the mature/end-of-life phase. Woodward has transitioned current production to the EasYgen and MicroNet TMR platforms. However, the installed base of DYN2 units in long-cycle industrial facilities (refineries, power plants) ensures continued demand for spare parts and repair services through at least 2035. DriveKNMS maintains dedicated inventory and repair capability for the full DYN2 range.
The following SKUs represent verified, commonly sourced components within the Woodward DYN2 series. Each entry reflects a distinct functional role within the generator control architecture:
DYN2-94025-004: Digital governor control module for Caterpillar generator sets; primary speed/load regulation unit.
DYN2-94025-001: Base variant of the 94025 control module; earlier firmware revision, single-channel analog output.
DYN2-94025-002: Intermediate revision with enhanced droop compensation and improved serial diagnostics port.
DYN2-94025-003: Pre-production revision with revised PID parameter storage; field-replaceable EPROM.
DYN2-94025-005: Extended temperature range variant (-40°C to +70°C); designed for outdoor enclosure installations.
DYN2-94025-006: High-vibration rated variant; reinforced PCB mounting for marine and mobile generator applications.
DYN2-94026-001: Companion load-sharing module; coordinates parallel generator operation via droop/isochronous switching.
DYN2-94026-002: Revised load-sharing module with expanded bus voltage monitoring range (90–480 VAC).
DYN2-94027-001: Analog input expansion card; adds four additional 4–20 mA process variable inputs to the DYN2 backplane.
DYN2-94028-001: Digital I/O expansion module; 16 discrete inputs, 8 relay outputs, DIN rail mountable.
DYN2-94029-001: RS-485 communication adapter; enables Modbus RTU integration with plant DCS/SCADA systems.
DYN2-94030-001: Power supply module, 24 VDC regulated output; primary backplane power source for DYN2 chassis.
DYN2-94030-002: Redundant power supply module; hot-swap capable, for critical continuous-duty installations.
DYN2-94031-001: Speed sensor input conditioner; accepts magnetic pickup (MPU) signals 0.5–70 VRMS, 10 Hz–10 kHz.
DYN2-94032-001: Actuator output driver module; 0–200 mA proportional output for Woodward EG-3P and similar actuators.
DYN2-94033-001: Overspeed detection module; independent hardwired trip circuit, not dependent on main CPU logic.
DYN2-94034-001: Human-machine interface (HMI) panel; 4-line LCD display, membrane keypad, local parameter adjustment.
DYN2-94035-001: Ethernet gateway card; bridges DYN2 serial bus to 10/100 Ethernet for remote monitoring integration.
The DYN2 series presents specific quality verification challenges due to its backplane bus architecture and mixed analog/digital signal processing. DriveKNMS applies a structured test protocol to all DYN2 units prior to shipment:
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