Emerson 1X00569H01

Product Short Description

Product Name: Cylinder Block Expansion Monitoring Module (Valve & Case Expansion Monitor), belonging to the Emerson AMS6500 TSI protection system (originally EPRO).
Product Introduction: A dual-channel dedicated displacement monitoring card for steam turbines, conforming to API 670 rotating machinery protection standard.

Working Principle: Uses LVDT differential transformer displacement sensing. The card performs internal signal demodulation, calculation, and threshold judgement, then outputs signals to PLC/ETS through three channels: 4–20 mA analog, alarm dry contact, and backplane digital bus.
Technical Specifications:
- Power Supply: 24 VDC ±10% (backplane), power consumption ≤ 5 W
- Channel 2: Dedicated to turbine cylinder block thermal expansion
- Channel 1: Main steam valve LVDT position
- Measurement Bandwidth: 0–100 Hz (static)
- Alarm Delay: 0–5 s, software adjustable
- Hysteresis: 0–20% FS
Signal Output:
- 4–20 mA analog (independently isolated per channel)
- Relay dry contact (with A6740 relay card)
- System bus communication (Modbus/Ethernet via A6560R processor)
Protection Logic: Triggers alarm on single-side over-expansion; sends hard-contact trip signal to PLC/ETS on differential over-limit or jam, participating in load reduction and shutdown interlock.
Application: Steam turbine cylinder expansion monitoring during startup, shutdown, and thermal transient.
Installation Requirements: Install PR9350 series LVDT probes in pairs at the axial support sliders of left/right cylinder blocks.
Usage Notes: Must use inductive LVDT half-bridge/full-bridge sensors only; do not substitute other transducer types.

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