The Speed and Emergency Trip Latch Monitor XJZC-03A/Q is a specialized device designed for the continuous monitoring and measurement of the rotational speed of rotating machinery. It is capable of recording two critical emergency trip speeds. The monitor is primarily used to track, alarm, and indicate the extended (tripped) or retracted status of a steam turbine’s emergency trip latch (flybolt), as well as to monitor and alarm the turbine’s operational speed. It plays a vital role in ensuring the safe and stable operation of steam turbines.
Key Features and Functionalities
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High-Performance Processor: Equipped with an advanced ARM embedded processor, the device supports convenient software programming and instrument configuration. It features historical data memory and query capabilities.
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Real-Time Recording & Querying: It captures and records the exact rotational speed at the precise moments the trip latch is tripped or retracted, as well as the peak speed detected. This data can be retrieved and queried at any time.
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Flexible Parameter Configuration: Instrument working modes and parameters can be configured either via host computer software or directly through the device’s front-panel buttons. Configurable parameters include device ID, measurement range, gear tooth count, and alarm thresholds.
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Comprehensive Alarm Function: Features both overspeed and zero-speed alarm functions. An alarm output is triggered immediately when the measured values exceed the pre-set limits.
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Communication Interface: Outfitted with an RS485 communication interface utilizing the standard MODBUS-RTU protocol, facilitating seamless communication and data transmission with host computers or control systems.
Installation Notes
During installation, a cutout must be made according to the instrument’s specified dimensions, and the device should be securely inserted and fastened into the instrument panel or cabinet. Additionally, proper sensor installation and system wiring must be completed.
Summary: With its high performance, comprehensive functionality, and flexible parameter configuration, the XJZC-03A/Q is an essential monitoring instrument for the safe operation of steam turbine generator units.
DFYLSYC-2026-06-05-A
