Description

1. Product Title

Woodward SMM40‑ Speed Measurement & Monitoring Module

2. Product Overview

SMM40 is a multi‑function speed monitoring and processing module for Woodward turbine and engine control systems. It conditions raw AC signal from magnetic pickup (MPU), converts noisy pick‑up signal into clean square‑wave speed signal for governor controllers. It provides speed over‑range, overspeed detection, alarm and relay output functions. Equipped with local LCD display and keypad for on‑site parameter setup and real‑time speed reading. Supports Modbus, RS‑232 / RS‑422 serial communication, compatible with Woodward 505, 2301A, MicroNet series governors. It is key spare for power‑generation gas‑turbine, steam‑turbine and diesel‑engine control panels.

3. Technical Specifications

• Brand: Woodward
• Model: SMM40
• Warranty: One Year
• Condition: 100% New & Original
• Supply: 24 VDC
• Input: Magnetic pickup MPU AC signal
• Output: Isolated square‑wave speed signal, relay alarm outputs
• Interface: RS‑232, RS‑422, Modbus
• Display: Two‑line LCD with keypad
• Compatibility: 505, 505E, 2301A, MicroNet control systems
• Operating Temp: ‑20°C ~ +60°C
• Mounting: Panel / DIN‑rail mounting
• Protection Class: IP44
• 

4. Application Scenarios

• Power‑plant Turbine Governor Cabinet: Speed‑monitoring spare for steam‑turbine and gas‑turbine control systems.
• Generator Set Control Panel: Overspeed and speed‑signal processing module for diesel / gas generator units.
• Woodward Governor System Retrofit: Direct‑fit replacement for existing SMM40 speed‑monitor hardware.