Woodward 9905‑001 SPM‑A

Product Name

Woodward 9905‑001 SPM‑A Speed Pick‑Up Module

Product Introduction

SPM‑A speed pick‑up module conditions and shapes raw magnetoelectric speed‑sensor signals, outputs standardized speed pulses to Woodward governor control systems for gas‑turbine and engine speed monitoring and protection.

Category:
Description

Technical Specifications

Compatible with magnetoelectric speed‑pickup input; Input‑signal amplitude: 50mV ~ 200V; Operating supply: 24VDC; Pulse‑signal output; Part number 9905‑001.

Functional Features

Filtering and waveform shaping for raw magnetoelectric alternating signals; Adaptive signal‑amplitude processing; Fault detection; Speed‑pulse output to controller; Sensor‑fault identification.

Application Scenarios

Governor systems for gas engines, gas turbines and diesel engines; Unit overspeed‑protection systems; Pre‑processing of speed signals matched with Woodward governors.

Performance Parameters

Operating temperature: ‑40℃ ~ +85℃; Wide speed‑response range; Anti‑pulse‑interference capability; Status and fault LED indicators.

Material Composition

Metallic housing; Industrial‑grade PCB; Signal‑conditioning chips; Wiring terminal blocks.

Structural Characteristics

Enclosed metal housing for DIN‑rail mounting; Terminal blocks for sensor and system wiring; Front‑panel status LED indicators.

Working Principle

Alternating analog signals from magnetoelectric sensors go through filtering, amplification and level shaping and are converted to standard square‑wave pulses. Pulse frequency matches shaft rotating speed and is sent to governor controller. Module monitors input signals continuously to detect sensor wire‑break faults.

Installation Requirements

DIN‑rail mounting inside control cabinet; Locate cabinet away from high‑power frequency converters; Route speed‑sensor cables separately; Ground housing; Supply stabilized 24VDC power.

Precautions for Use

Do not run sensor cables parallel with power cables; Do not exceed rated supply‑voltage range; Avoid heavy mechanical shock to housing; When fault LED illuminates, inspect probe gap and cable integrity.

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