Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of 9907-149 electronic overspeed trip device in China. If you're going to wholesale bulk cost-effective 9907-149 electronic overspeed trip device made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Products Description
Designed to monitor and guard industrial engines, turbines, and other rotating equipment from overspeed circumstances, the 9907-149 Electronic Overspeed Trip Device is a quite dependable safety device. Designed to identify too high rotational speeds and automatically stop the equipment to prevent damage, this device guarantees the protection of important gear and reduces the chance of catastrophic failures.
Products features
Accurate and responsive speed monitoring in the 9907-149 is achieved by use of modern electrical technologies. It runs constant comparison between the equipment's real speed and pre-defined safe operating limits. Should the speed surpass the threshold, the gadget sets off an instantaneous shutdown or trip signal, so activating safety systems including actuator control or fuel cut-off to bring the system to a safe condition.
Adjustable trip settings of the 9907-149 Electronic Overspeed Trip Device provide compatibility with a broad range of equipment and operating situations. It provides dependable performance even in demanding conditions, including high-vibration and temperature extremes generally found in industrial and marine applications, and supports several input configurations.This gadget provides flexibility and fast response to overspeed situations and is meant for simplicity of installation and integration into current control systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Dimensions | W19in × H12.244in × D5.62in |
| Features | Hot Replacement |
| Input Voltage | 120 Vac/dc |
| Manual | 85204 |
| Model | De-energize-to-Trip |
| Keypad/Display | 1 display and keypad per module |
| Operating Temperature | –13 to +140 °F (Converted: -25~60°C) |
| Standards | NEMA 4/4x, IP54 |
| Weight | Less than 17 lbs |
Applicable Scenarios
Industrial engines: diesel engines, gas engines (such as power plant backup units)
Turbines: steam turbines, gas turbines (for oil and gas extraction and process industries)
Rotating equipment: large motors, compressors, fans (heavy machinery operating at high speeds)
Special applications: marine power systems, high-vibration production lines (such as mining equipment)
FAQ
Q: Which brands of turbine/engine control systems are compatible with the 9907-149 electronic overspeed trip device? Besides Woodward, does it also support devices from brands like Siemens and ABB?
A: The 9907-149 offers strong compatibility. Its core compatibility is compatible with Woodward's full range of speed control systems (such as the 2301A and 2301D Speed Control). It also supports mainstream industrial control systems like the Siemens S7 series and ABB's AC800M through standard signal interfaces (4-20mA analog/RS485 communication).
Q: What does it mean when the product is labeled "NEMA 4/4x compliant"? Will the 9907-149 operate stably and long-term in a chemical plant with high dust and corrosive gases?
A: NEMA 4/4x is the enclosure protection standard established by the National Electrical Manufacturers Association. For the 9907-149, this specifically includes:
① Dustproof rating of IP54, preventing dust particles ≥1mm in diameter from entering the device;
② Waterproof rating supports "all-round splash protection," making it suitable for food processing and chemical plants with frequent cleaning;
③ 4x rating also provides "corrosion resistance." The enclosure is made of 316L stainless steel, which can withstand corrosion from weak acid and alkaline gases (such as chlorine and ammonia) commonly found in chemical plants.
Q: Hot-swap functionality is a core selling point of the 9907-149. What details should be considered during actual replacement? Will the replacement process affect the temporary operational safety of the main equipment?
A: The 9907-149's hot-swap function is designed for "non-stop, safe replacement." Three key points should be noted during operation:
① Before replacing, confirm that the main device's current speed is below 70% of the rated speed (low-load state) to avoid false triggering due to signal loss at high speeds.
② The device is equipped with a "dual signal redundancy interface." During replacement, the backup device can be connected first, and then the old device can be disconnected after confirming normal signal flow, ensuring no signal interruption.
③ After replacement, the device's built-in "signal self-test" function must be used to verify that speed data acquisition and trip signal output are functioning properly (the self-test lasts approximately 30 seconds).
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