Description
Emerson A6210‑022‑000
Technical Specifications: Input channel quantity: two independent eddy‑current‑sensor input channels Matched sensor series: PR6422, PR6423, PR6424, PR6425 with corresponding CON converter Sensor supply voltage: ‑26.7 VDC per channel, maximum output current 35 mA Input impedance: greater than 100 kΩ Low‑cutoff frequency: fixed 0 Hz for static‑position measurement High‑cutoff frequency: 50 Hz‑1000 Hz adjustable Analog output signal: each channel 4‑20 mA and 0‑10 V proportional output Alarm delay time: 0‑5 s adjustable Module power input: 24 VDC supplied by rack backplane Operating temperature: 0 ℃‑60 ℃ Storage temperature: ‑40 ℃‑85 ℃
Functional Features: Special circuit design adapts to static and slow‑variation displacement measurement. Dual‑channel independent measurement supports differential expansion calculation. Two‑level alert and danger threshold configuration for each channel. Hardware relay output for alarm and trip interlock signal. Built‑in sensor cable breakage and short‑circuit diagnostic function. Buffered signal test output facilitates on‑site debugging work. Hot‑swap module structure for online replacement. LED indicators display power‑on, alarm and fault status. Upload measurement and fault information to upper monitoring system via rack system bus.
Application Scenarios: Steam‑turbine thrust‑bearing axial‑thrust position monitoring, rotor differential‑expansion monitoring for large‑size turbogenerator set, compressor rotor axial displacement protection, valve‑rod position continuous monitoring for petrochemical rotating equipment.
Performance Parameters: Measurement accuracy: ±0.75% full‑scale range Relay contact load capacity: 250 VAC / 3 A resistive load Vibration resistance: 10 Hz‑150 Hz, 0.5 g Shock resistance: 10 g peak value, 11 ms MTBF value: 215000 hours
Material Composition: Module housing: UL94‑V0 flame‑retardant thermoplastic. Internal circuit board: FR‑4 glass‑fiber epoxy substrate. Backplane connector contact: gold‑plated copper alloy. Sealed‑package industrial‑grade relay components. Side locking latches: high‑strength reinforced engineering plastic.
Structural Features: 3U Euro‑card single‑slot plug‑in module for AMS6500 rack installation. Two‑side mechanical locking buckles fix module inside rack. Front panel is equipped with LED indicator group for status observation. Rear‑side multi‑pin gold‑plated connector connects rack backplane power supply and communication bus. Upper shell surface distributes ventilation slots for passive heat dissipation.
Working Principle: Output voltage signal from eddy‑current converter accesses module input channel. Since axial‑position and differential‑expansion signals belong to static or slow‑change physical quantity, internal measurement circuit filters high‑frequency vibration interference, extracts static‑gap‑related voltage component. Circuit converts voltage signal into actual displacement value. Compare measured displacement value with preset alert and danger threshold. Relay acts and outputs protection signal when displacement exceeds threshold setting. Real‑time data transmits to upper monitoring system via rack bus.
Installation Requirements: Insert module to designated slot inside AMS6500 rack, fasten side locking latches completely. Field sensor signal wiring uses shielded twisted‑pair cable, shield layer single‑point grounding inside cabinet. Separate signal cables and high‑voltage power cables in different cable‑trays. Cut off rack power supply before module plug‑in and removal.
Precautions for Use: Complete sensor measuring‑chain calibration before system commissioning. Wear anti‑static wrist‑band for maintenance work. Do not change threshold parameters arbitrarily during unit running. Remove dust on ventilation grille during regular overhaul. Stop using module immediately if hardware fault indicator keeps lighting and cannot reset.
