Product Introduction
Part of the esteemed easYgen-3000 series, the Woodward 8440-1935 industrial automation module (model easYgen-3500-1-P1) serves as a reliable controller for generator applications. This module is designed to replace or upgrade older generator control units, offering enhanced precision and isolation for discrete inputs. The Woodward 8440-1935 comes in a robust sheet metal chassis, intended for cabinet installation. Its integrated generator group breaker control simplifies system architecture, making it a prime choice for modernization projects.
When upgrading existing generator control systems, the 8440-1935 provides a straightforward path to improved accuracy and safety. The module’s built-in power factor monitoring (ratio of real to apparent power) helps optimize efficiency across capacitive, resistive, and inductive circuits.
Technical Specifications
The Woodward 8440-1935 offers the following key parameters, directly from the manufacturer’s documentation:
| Parameter |
Value |
| Accuracy Class |
0.5 |
| Discrete Inputs |
Isolated |
| Front Panel Dimensions |
282W x 216H x 96D mm |
| Resolution |
16 Bit |
| Setting Range |
1 – 32,000 A |
| Weight |
Approx. 1,850 g |
With a 16-bit resolution and accuracy class 0.5, the Woodward 8440-1935 delivers precise measurement and control for generator parameters. The isolated discrete inputs enhance noise immunity, essential in industrial environments. The wide setting range from 1 to 32,000 A covers a broad spectrum of current transformer configurations.
Industry Applications
The Woodward 8440-1935 is primarily used in generator control systems within power plants, industrial facilities, and backup power applications. Thanks to its integrated generator breaker control, it simplifies synchronization and load sharing. For example, when upgrading an older generator controller in a data center, the 8440-1935 ensures accurate power factor regulation and seamless transition during mains failure. Its robustness also suits marine and oil & gas installations where reliability is paramount.
Installation & Setup Guidance
Mount the Woodward 8440-1935 in a clean, dry cabinet. The front panel cutout dimensions must accommodate 282W x 216H x 96D mm. Ensure adequate ventilation around the module. When connecting current transformers, always short-circuit the CT before disconnecting the module to avoid high-voltage hazards and personal injury. Do not connect wires to the protective earth terminal on the controller; use the dedicated connector at the bottom if a protective earth connection is required.
For the discrete inputs, use twisted-pair shielded cables and isolate them from power wiring. The 16-bit resolution requires a stable reference voltage; verify that the supply meets the module’s specifications.
Maintenance & Reliability
The Woodward 8440-1935 is designed for long-term operation with minimal maintenance. Periodically inspect the front panel for dust accumulation and clean with a dry, anti-static cloth. Check all wiring connections annually for tightness and signs of corrosion. The module’s aluminum chassis dissipates heat effectively, but ensure ambient temperature stays within –20°C to +60°C (typical industrial range; confirm with datasheet). The isolated discrete inputs reduce the risk of ground loops, enhancing long-term reliability.
Troubleshooting & Common Issues
If the generator breaker fails to close, verify that the current transformer is properly short-circuited and that the setting range (1-32,000 A) matches the CT ratio. A power factor reading consistently at 1.00 suggests a purely resistive load – if not expected, check for incorrect wiring or a faulty sensor. For communication errors, ensure the module’s firmware is updated and that the network cable (if used) is intact. The Woodward 8440-1935 provides diagnostic LEDs on the front panel; consult the user manual for blink codes.
Selection Guide & Purchasing Advice
Before purchasing the Woodward 8440-1935, verify that your existing system requires an easYgen-3500 series controller. Confirm the front panel dimensions fit your cabinet cutout (282W x 216H x 96D mm) and that the weight (1,850 g) is supported by your mounting brackets. For new installations, order matching current transformers and wiring accessories. PLC Source PRO (available at ubest101.myshopify.com) stocks this module as new surplus or reconditioned stock, ensuring you get a reliable unit for your upgrade project.