Woodward 8557-784 Speed Measuring Interface Module

Product Brief Introduction Signal conditioning interface module, converts raw magnetic pickup speed signal into standardized digital signal for main control unit.
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Technical Specifications Supply voltage: 24 V DC; Input: variable reluctance sine wave signal; Output: digital pulse signal; Frequency range: 0–10 kHz; Operating temperature: -40 °C to +85 °C; Enclosure: IP30.

Functional Features Speed signal shaping; signal amplitude adaptation; signal fault detection; isolation between sensor and controller.

Application Scenarios Gas turbine, steam turbine and large engine speed measurement, speed signal conditioning for Woodward control system.

Performance Parameters Frequency conversion accuracy: ±0.01% FS.

Material Composition Metal housing; signal conditioning PCB; isolation circuit; terminal blocks.

Structural Characteristics DIN rail mount module; speed sensor input terminals and digital pulse output terminals.

Working Principle Receives sine wave signal from magnetic pickup, filters and shapes the waveform into square pulse signal, isolates and transmits the pulse signal to main controller for speed calculation.

Installation Requirements DIN rail installation; connect magnetic pickup input and digital output wiring; set signal threshold.




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