WOODWARD 9907-147 Overspeed protection system

WOODWARD 9907-147 Overspeed protection system

Specific Parameters​

Electrical Parameters​

Operating Voltage 24VDC, supporting stable input​

Speed Monitoring Range 100 rpm to 20,000 rpm, adapting to high-speed equipment​

Detection Accuracy ±0.25%, ensuring accurate overspeed judgment​

Response Time Less than 20ms, triggering protection action quickly​

Trip Point Setting Adjustable range 100% to 120% of rated speed​

Time Delay 0 to 20 seconds programmable setting​

Output Type Relay contact output, including alarm (NO) and shutdown (NC) signals​

Sensor Interface Compatible with 3 magnetoresistive speed sensors (MPU)​

Protection Features Built-in sensor fault diagnosis, power monitoring, logic voting fault protection​

Certification Standards Compliant with UL, IECEX standards, meeting NEMA4X installation requirements​

Mechanical Parameters​

Overall Dimensions 184mm×133mm×64mm, compact structure​

Weight Approximately 2.5kg, facilitating cabinet installation​

Mounting Method Panel or backplane mounting, compatible with standard industrial control cabinets​

Housing Material High-strength sheet metal, with impact resistance​

Connection Method Terminal block connection, compatible with shielded signal cables​

Protection Rating NEMA4X, dustproof and waterproof, suitable for outdoor and humid environments​

Status Indication Equipped with 3 independent LCD displays (2 lines × 16 characters), operation/fault LED indicators​

Environmental Parameters​

Operating Temperature -25℃ to 60℃, no performance derating over the entire temperature range​

Storage Temperature -55℃ to 105℃, meeting extreme storage and transportation requirements​

Relative Humidity ≤95% (non-condensing), suitable for high-humidity industrial scenarios​

Vibration Resistance Complies with IEC 60068-2-60 standard, withstanding gaseous pollutants and vibration​

Shock Resistance Withstands mechanical shocks during installation and transportation, with stable performance​

EMC Compliance Complies with US MIL-STD 461C standard, meeting anti-external electromagnetic interference requirements​

Product Performance​

Reliable safety redundancy: Two-out-of-three voting logic + independent sensor power supply, avoiding false action caused by single-point failure​

Extremely fast response speed: Completes overspeed detection and trip output within 20ms, minimizing equipment damage​

Excellent monitoring accuracy: ±0.25% accuracy ensures accurate judgment of overspeed threshold, no false or missing alarms​

Flexible configuration: Supports on-site programming of trip point and delay time, adapting to different equipment needs​

Comprehensive diagnostic functions: Real-time monitoring of sensor status, recording peak speed, facilitating fault tracing​

Low maintenance cost: Supports online hot-swappable unit replacement, enabling maintenance without shutdown​

Strict safety protection: Equipped with key switch to lock programming functions, preventing unauthorized parameter modification​

Strong environmental adaptability: NEMA4X protection and wide temperature design, tolerating harsh working conditions such as dust and humidity​