Description
METSO A413171
Technical Specifications: 8‑channel RTD input; support PT100 and PT1000 thermal‑resistance sensors; compatible with 2‑wire, 3‑wire and 4‑wire connection modes; 16‑bit ADC conversion; per‑channel optoelectronic isolation; backplane 24 VDC power supply; rack plug‑in installation; operating temperature range 0 ℃ to +55 ℃; each channel LED status indicator; protection class IP20.
Functional Features: Directly acquire thermal‑resistance temperature signal; software configurable for different wiring modes; hardware detection for sensor wire‑break fault; independent electrical isolation for each channel; single‑channel fault isolation; module‑integrated self‑diagnosis function; upload temperature measurement data and fault‑alarm information to DCS system.
Application Scenarios: Bearing and pipeline temperature‑monitoring cabinet in thermal‑power plant; reaction‑vessel temperature‑collection cabinet in chemical plant; pulp‑cooking section temperature‑monitoring cabinet in paper mill; equipment‑temperature monitoring cabinet in water‑treatment plant.
Performance Parameters: Temperature‑measurement accuracy ±0.1 ℃; low long‑term temperature drift; high‑resolution analog‑to‑digital conversion; comply with industrial EMC electromagnetic‑compatibility standards; support 7×24 hours uninterrupted continuous operation.
Material Composition: Fiberglass epoxy multilayer printed circuit board; high‑precision ADC chip; optoelectronic isolation components; gold‑plated edge connector; metal front panel; three‑proof conformal coating covered on circuit‑board surface.
Structural Features: Rack plug‑in modular structure; front panel equipped with LED indicators for power supply, running and channel‑fault status; rear gold‑plated edge connector connects to DNA rack backplane bus; analog‑acquisition circuit and logic circuit are physically separated; mechanical anti‑loose locking buckle fitted on front panel.
Working Principle: Field RTD sensor signals transmit to A413171 module through matched terminal base. Module outputs constant excitation current to thermal‑resistance element. It collects resistance‑change value and converts resistance signal into digital temperature value via internal ADC chip. Temperature data transmits to DPU controller through backplane bus. Module detects wire‑break or short‑circuit fault of sensor and uploads alarm‑message to upper system.
Installation Requirements: Install module into designated slot of Metso DNA I/O rack and cooperate with original matched terminal base. Adopt special shielded compensation cables for RTD sensor wiring. Cable shielding layer uses single‑point grounding. Temperature‑signal cables and high‑power cables are laid separately. Cabinet protective‑grounding terminal must realize reliable connection.
Precautions for Use: Select corresponding wiring mode according to actual field RTD sensor type. Cut off sensor‑loop power supply before wiring operation. Never feed high‑voltage signal into input channel. Cut off rack backplane power supply before removing module. Inspect wiring‑terminal tightness periodically. Avoid condensation phenomenon inside control cabinet.
