Woodward EWU 040 Expansion Unit Module

Product Description

The EWU 040 is the expansion wiring unit for Woodward MicroNet / NetCon CPU 040 control system. It serves as the external terminal and signal expansion interface, extending the CPU’s I/O, actuator and sensor wiring terminals, providing signal conditioning, surge protection and terminal distribution for turbine control loops. It is used together with CPU 040 to expand field wiring capacity for gas turbine, steam turbine and generator control racks.

Features

• Part No: EWU 040, Brand: Woodward
• Matched platform: MicroNet / NetCon CPU 040 controller
• Function: Field signal terminal distribution, wiring expansion and signal conditioning
• Integrated surge suppression and overvoltage protection for field loops
• Supports analog signals, discrete inputs/outputs, actuator drive and speed probe wiring
• Internal ribbon cable connection to CPU 040 main board
• Terminal block design for easy field wiring, testing and maintenance
• Built-in loop fault detection for speed, LVDT and 4-20mA signals
• Front LED indicators for channel status and fault alarm
• Conformal coated PCB option for power plant and refinery cabinet environments

Applications

• Gas turbine, steam turbine control cabinet with CPU 040
• Power plant, refinery and oil & gas turbo machinery control system
• Generator speed regulation, load control and protection interlock loops
• Legacy MicroNet / NetCon system spare replacement and retrofit
• Field wiring expansion for simplex and TMR turbine control racks

FAQ

Q: What is the relationship between EWU 040 and CPU 040?
A: CPU 040 is the main processor; EWU 040 is its supporting expansion wiring unit, they must be matched as a set.

Q: Can EWU 040 work with CPU 060?
A: No, EWU 040 is exclusive for CPU 040, CPU 060 uses its own corresponding expansion unit.

Q: Is this module discontinued?
A: Woodward EWU 040 series is end of original production, supplied as surplus, refurbished and tested spare parts only.

Q: Does it contain control logic?
A: No, it is only a wiring expansion and signal conditioning unit, control logic runs on CPU 040.