Woodward 9905-976 | Overspeed Protection Module New In Stock New In Stock

Brand：Woodward PLC

Item No.：Woodward 9905-976

Product origin：USA

Dimensions:483 × 310 × 143 mm

Weight:2.3 kg

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Product Introduction：

Overview

The Woodward 9905-976 is an overspeed protection module designed for turbines, compressors, and other high-speed rotating machinery. It continuously monitors shaft speed using redundant inputs and fail-safe logic, triggering a trip or shutdown when an overspeed condition is detected.

General Information

Part Number: 9905-976

Manufacturer: Woodward

Brand / Country of Origin: Woodward / USA

Type: Overspeed Protection / Safety Module

Series: ProTech 203

Mounting: Panel or rack-mount in control cabinet

Technology: Triple-channel speed sensing with two-out-of-three voting logic for fail-safe overspeed trip

Power Specifications

Supply Input: 120 V AC or 90–150 V DC (depending on module variant)

Power Consumption: ~7.25 W under normal operation

Protection: Internal protection circuitry ensures safe operation under industrial conditions; triggers reliable shutdown if overspeed is detected

Communication & Interface

Speed Input: Three independent magnetic-pickup or encoder inputs for redundant speed measurement

Voting Logic: Two-out-of-three hardware voting ensures single sensor fault does not cause false trips

Output: Relay outputs for trip/shutdown action, with optional alarm/status outputs

Operator Interface: Front-panel keypad and display for setting trip speeds, viewing status, and diagnostics

Environmental

Operating Temperature: –25 to +60 °C

Humidity & Conditions: Designed for industrial environments; module housing and electronics suitable for turbine and generator control systems

Dimensions & Weight

Dimensions (W × H × D): 483 × 310 × 143 mm

Weight: ~2.3 kg

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