Woodward 8440-2028 easYgen-3000 Digital I/O Expansion Module
Manufacturer: Woodward
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Part Number: 8440-2028
Condition：New with Original Package
Product Type: Digital I/O Expansion Modules
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Country of Origin: GERMANY
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Woodward 8440-2028 IKD1/IKD1M Digital I/O Expansion Module
Configured for scalable expansion of digital inputs and outputs in easYgen-3000 series control networks, the Woodward 8440-2028 (8440-2028 Digital I/O Expansion Module) provides direct physical/electrical execution. Operating on an 18-32 VDC power supply, this expansion unit interfaces with diesel and gas generator controllers to increase discrete signal density. It routes auxiliary status signals, fault alarms, and breaker position feedback while communicating with supervisory PLCs, DCS platforms, and EMS networks via Modbus RTU/TCP, CAN, and Ethernet connectivity.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 8440-2028 (Rev A, IKD1/IKD1M) |
| Brand | Woodward |
| Origin | USA |
| Weight | 1.81 kg (4.0 lbs) |
| Dimensions | 282 mm (H) x 359 mm (W) x 135 mm (D) |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption / Input Voltage | 18-32 VDC |
| Product Type | Digital I/O Expansion Module |
| Compatible System | easYgen-3000 Series Genset Controllers |
| Signal Inputs | Voltage, current, frequency, engine speed, digital/analog inputs |
| Control Outputs | Relay outputs for breaker control, alarms, trips |
| Communication Protocols | Modbus RTU/TCP, CAN, Ethernet |
| Mounting Type | Panel mount |
| Protection Functions | Over/under-voltage, over/under-frequency, overload, short circuit, engine safety alarms |
Thermal Heat Sink Dissipation Profiles
The Woodward 8440-2028 utilizes passive conduction and convection heat sink dissipation profiles to maintain internal component temperatures within the rated -20 deg C to +70 deg C operating window. Thermally optimized aluminum housing components draw heat away from high-density digital relay switching circuits and internal power converters. This passive thermal design prevents internal hot spots during continuous multi-channel relay activation without requiring forced-air fan assemblies, reducing mechanical failure risks in sealed control cabinets.
Frequently Asked Questions
Q: How does the Woodward 8440-2028 interface with the primary easYgen-3000 controller?
A: The expansion module communicates directly over CAN and Ethernet fieldbus connections, allowing the main easYgen-3000 controller to address additional digital I/O points without introducing software polling delays.
Q: What power wiring specifications must be maintained during installation?
A: The module requires an isolated 18-32 VDC power supply. Field technicians must route dedicated DC power leads separately from AC potential transformer (PT) and current transformer (CT) wiring to prevent noise injection into digital logic circuits.
Q: Can the output relays handle direct circuit breaker trip actuation?
A: The onboard configurable relay outputs provide hardware contacts designed to command breaker trip coils and alarm annunciators, provided field wiring adheres to specified voltage and current contact ratings.
Field Installation Guidelines
Mount the module securely on a flat vertical panel surface inside an IP-rated enclosure using standard mounting fasteners. Maintain a minimum clearance around the perimeter to ensure unobstructed convection airflow across the enclosure heat dissipation surfaces. Connect all CAN, Modbus, and Ethernet communication links using shielded twisted-pair cables. Ground the overall cable shielding at a single chassis earth point inside the cabinet to prevent ground loop currents from interfering with digital signal state detection. Verify that all terminal block connections are torqued to specified limits before applying 18-32 VDC primary power.