DSL Digital Woodward Module 5501-471 Woodward Speed Position Sensor Module

Short Description
The 5501-471 is a genuine Woodward DSL (Digital Speed Link) module that converts magnetic pick-up or encoder signals into high-resolution speed and position data for gas/steam turbines, compressors and engines. With SIL 2 certification and hot-swap capability, it ensures reliable speed control and overspeed protection in safety-critical applications.

Key Features & Benefits

• 100 % OEM Woodward – serialized & factory-sealed
• Accepts magnetic pick-up (MPU) and incremental encoder
• Speed range 1 Hz–12 kHz, resolution 0.001 %
• Isolated 24 VDC power & signal channels
• On-board overspeed detection & alarm relay
• Hot-swap in DSL rack – no shutdown
• Redundant power inputs with diode OR-ing
• –40 °C … +85 °C operating, conformal-coated
• SIL 2 (IEC 61508), CE, UL 508, ABS, ATEX certified

Technical Specifications

Typical Applications

• Gas/steam turbine speed control
• Compressor surge prevention & load sharing
• Engine overspeed protection
• Generator frequency monitoring
• SIL 2 safety-critical speed loops

What’s in the Box

• 1× 5501-471 DSL speed sensor module

• 1× Removable 20-pin spring-clamp terminal block

• Factory calibration certificate & traceability label

• Quick-start guide & ESD wrist strap

Installation & Setup