Honeywell FS‑SAI‑1620MA

Technical Specifications: Module type: FS‑type, non‑conformal coated Input channel quantity: 16 isolated safe analog input channels Signal range: 4‑20 mA DC, 0‑20 mA DC Full‑scale accuracy: ±0.1 % FS Resolution: 12‑bit Input burden resistance: 250 Ω Isolation performance: Channel‑to‑channel isolation, channel‑to‑system‑bus galvanic isolation Operating temperature: ‑40 °C ~ +70 °C Storage temperature: ‑40 °C ~ +85 °C Mechanical dimension: 4TE width, 3HE height Safety certification: SIL3, CE, TUV, UL, CSA, FM certification Applicable location: Class I Division2 hazardous location permitted

Functional Features: 16‑channel high‑density safety‑grade analog signal acquisition Channel‑by‑channel galvanic isolation avoids cross‑channel interference Built‑in channel fault self‑diagnosis, detect open‑circuit, short‑circuit signal fault and report fault information to system SIL‑3 safety‑integrity level meets safety‑instrumented function requirement Convert field pressure, temperature, flow transmitter 4‑20 mA signal to digital safety‑data Support field signal wire break detection Seamless hardware integration with Honeywell Safety Manager system backplane Internal signal filtering suppresses field‑site signal interference

Application Scenarios: SIL3 safety‑instrumented system analog‑signal acquisition Petrochemical plant safety‑instrument system field transmitter signal input Chemical industry emergency‑shutdown system process‑variable signal collection Oil‑gas facility safety‑system pressure, temperature, flow monitoring Power‑plant safety‑protection system analog‑signal input Process‑industry hazardous‑area Division2 safety‑control cabinet

Material Composition: Module housing: Black flame‑retardant plastic housing Circuit board: Industrial FR‑4 circuit board without conformal coating Backplane connector: Gold‑plated industrial connector Signal terminal: Tin‑plated copper alloy terminal

Structural Characteristics: Plug‑in rack‑mount module structure, insert into Safety Manager system dedicated rack Front‑panel multi‑LED indicator for channel status, module running and fault status Rear‑side gold‑plated backplane connector realizes power and bus communication Module width occupies 4TE slot space of standard rack No moving mechanical components inside module

Working Principle: Each independent channel receives 4‑20 mA analog current signal from field transmitter. Signal passes isolation circuit and enters analog‑to‑digital conversion unit. Module internal safety‑logic circuit executes signal validity check, open‑circuit and short‑circuit fault diagnosis. Valid converted digital data transmits to Safety Manager main controller through system backplane bus. Channel‑to‑channel isolation prevents single‑channel field‑circuit fault from spreading to other channels. Self‑diagnosis circuit continuously monitors each channel hardware working state, fault information uploads to system controller in real‑time.

Installation Requirements: Insert module into designated slot of Honeywell Safety Manager rack, fasten module lock screw. Install inside industrial control cabinet, keep ambient temperature between ‑40 °C ~ +70 °C. Field transmitter signal wiring access module external termination assembly (FTA‑T‑series). Signal cable shall use shielded twisted‑pair cable, shield single‑end grounding. When deployed in Class I Division2 hazardous‑location, strictly follow hazardous‑area installation specification. Complete rack protective ground connection. Do not use in high‑condensation corrosive‑gas environment for non‑conformal coated FS‑type module.

Usage Notes: FS‑type module without conformal coating cannot be used in high‑humidity, corrosive‑gas heavy‑dust environment, select FC conformal‑coated version for such environment. Do not exceed 4‑20 mA rated input signal range. Confirm corresponding FTA‑T‑series termination assembly matches module model. Do not hot‑swap module under running safety‑system unless hardware explicitly supports hot‑swap. Regularly inspect signal terminal screw tightening status. System shall configure corresponding channel fault alarm logic.