Part Code Definition

Fixed part number A6410 for expansion/valve position monitor of AMS6500 rack, no standard version suffix; incompatible with vibration/displacement cards A6110/A6210, exclusive for inductive sensor signal acquisition。

Technical Specifications

Backplane power: -26.7VDC from AMS6500 rack backplane, max power consumption ≤5.9W

Dual independent differential input, carrier frequency 4.75kHz, input impedance 200kΩ, channel-to-bus isolation 1500VAC

Compatible sensor: PR9350 series inductive displacement transducer, LVDT full/half-bridge contact probe

Frequency response:0~100Hz, full-scale measuring range customizable, measurement precision ≤±1%FS

Analog output per channel: isolated 4~20mA /0~10VDC proportional signal for DCS; front-panel buffered test output ±12Vpp

Alarm relay: independent Alert/Danger dry contact output, alarm hysteresis & trip delay(0~36s) programmable, NO/NC contact optional

Ambient: operating 0℃~+65℃, storage -30℃~+85℃, 5%~95%RH non-condensing

Dimension:30×128.4×160mm(6TE/3HE), net weight≈0.32kg

Interface & Communication Layout

Front panel:2 SMB sensor signal input ports; POWER/RUN/ALARM/TRIP status LED; RS232 local configuration serial port

Rear golden finger: exclusive AMS6500 backplane bus, upload expansion/valve opening data & fault codes to system mainframe

Rear terminal block:4~20mA analog output terminals + dual-group alarm/trip relay wiring terminals for equipment interlock

Core Functions

Turbine Casing Expansion Mode: Monitor left/right cylinder thermal elongation, detect uneven thermal expansion & casing bending, avoid rotor-stator friction during unit warm-up/cool-down

Main Steam Valve Position Mode: Collect valve stem travel, convert to percentage opening, reflect turbine real-time load for control room monitoring

Per-channel independent programmable Alert/Danger threshold; full self-diagnosis for sensor open/short-circuit, module power failure, internal overheat, fault info uploaded to AMS host and DCS; online hot swap without rack power off, idle channel keeps continuous monitoring during single-channel fault maintenance

Application Scenarios

Thermal power steam turbine cylinder expansion + main control valve position safety monitoring; gas turbine casing thermal growth measurement; petrochemical large compressor shell expansion supervision; on-site spare replacement of existing AMS6500 protection cabinet

Operation & Maintenance Notes

Only install into standard AMS6500 single slot, confirm rack bus voltage before plugging; must adopt original PR9350 inductive probe to guarantee measuring accuracy; sensor shield cable separate from high-power cable to eliminate EMI drift; finish measuring range, alarm threshold setting via AMS upper configuration software after wiring; periodic check front panel indicator and DCS historical fault log, fasten rear terminal screws regularly