Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | 8440-2085 |
| Manufacturer | Woodward |
| Product Family | easYgen-3000XT |
| Controller | easYgen-3500XT-P1 |
| Product Type | Genset / power-management controller |
| Mounting | Front-panel |
| Display | Integrated |
| Current Measurement | 1 A / 5 A |
| Generator Voltage Measurement | Up to 690 VAC, configuration dependent |
| Frequency Measurement | 40–85 Hz |
| Nominal System Frequency | 50 / 60 Hz |
| CAN Interfaces | Up to 3 |
| Ethernet | Modbus TCP interface |
| Serial Interface | USB |
| RS-485 | Modbus RTU |
| LS-5 Connectivity | Supported |
| Operating Temperature | -20 to +70°C |
| Enhanced Low-Temperature Variant | 8440-2086 |
Woodward’s documentation distinguishes 8440-2085 from the 8440-2084 back-panel version and identifies 8440-2086 as the corresponding low-temperature variant. The P1 configuration is intended for complex paralleling applications.
Product Introduction
The Woodward 8440-2085 is an easYgen-3500XT-P1 genset controller designed for generator synchronization, load sharing, generator protection, and complex paralleling schemes. The controller is intended for systems where several generator sets, bus segments, tie breakers, or utility connections must be coordinated rather than for a single basic standby generator.
The P1 configuration is particularly relevant when the system incorporates LS-5 circuit-breaker controls and a larger power-management network. Woodward documentation describes communication architectures supporting multiple easYgen controllers and LS-5 devices, making the exact controller variant important when replacing an installed unit.
8440-2085
Engineering Pain Point
The main replacement risk with 8440-2085 is confusing a genset controller with a simple engine controller. This unit participates in electrical synchronization, generator protection, load sharing, and breaker logic. A replacement must therefore preserve the generator CT/PT configuration, bus measurement arrangement, CAN/Ethernet topology, breaker logic, and application parameters; matching the front-panel dimensions alone proves very little.
Typical Applications
- Multi-generator paralleling systems where several gensets share a common load.
- Complex islanded power systems requiring automatic synchronization and load sharing.
- Utility/generator paralleling with breaker and bus-tie control.
- Power plants with LS-5 circuit-breaker controllers integrated into the generator-management network.
- Industrial and marine genset installations requiring generator protection and coordinated power management.
Technical Pitfalls to Avoid
- Do not substitute P1 and P2 blindly.
Woodward lists 8440-2085 under the 3500XT-P1 family, while 8440-2088 belongs to the P2 configuration. Their intended applications and I/O arrangements differ. - Verify CT configuration before commissioning.
The controller supports 1 A / 5 A current measurement. CT ratio, polarity, phase assignment, and wiring must match the original application. - Check LS-5 architecture.
The P1 configuration is specifically associated with complex paralleling and LS-5 connectivity. If the existing system contains LS-5 breaker controls, confirm the CAN/network topology and configured device addresses before replacing the controller. - Preserve the application configuration.
Synchronizing limits, breaker timing, load-sharing settings, protection thresholds, start/stop logic, and utility-paralleling parameters should be backed up before removing the existing controller. - Do not confuse 8440-2085 with 8440-2086.
Woodward identifies 8440-2086 as the enhanced low-temperature version of the 8440-2085 configuration. The standard 8440-2085 is specified for approximately -20 to +70°C, while the low-temperature version addresses operation down to -40°C. - Verify the actual electrical measurement range.
Published records describe direct measurement capability up to 690 VAC, but the correct connection depends on the generator and bus voltage configuration. Do not connect a PT/VT circuit or direct measurement circuit based solely on the controller’s maximum rating.
Related Products
- Woodward 8440-2084 — easYgen-3400XT-P1, back-panel mounting without the display; different controller configuration and physical installation.
- Woodward 8440-2086 — enhanced low-temperature version of the 8440-2085 configuration; intended for colder operating environments.
- Woodward 8440-2087 — easYgen-3400XT-P2 back-panel configuration; P2 architecture differs from the P1 family.
- Woodward 8440-2088 — easYgen-3500XT-P2 front-panel controller with display; verify application and I/O requirements before considering substitution.
- Woodward 8440-2089 — enhanced low-temperature version associated with the P2 front-panel configuration.
- Woodward easYgen-3500XT-P1 — the controller family represented by 8440-2085, intended for complex generator paralleling and power-management applications.
Procurement check: For 8440-2085, verify the complete easYgen-3500XT-P1 designation, hardware revision, CT rating, generator/bus voltage arrangement, LS-5 network, CAN/Ethernet configuration, breaker logic, and stored application parameters before approving a replacement. Woodward’s current documentation confirms that 8440-2085 is the front-panel P1 configuration; it should not be selected interchangeably with other easYgen-3000XT part numbers simply because they share the same series.
