{"product_id":"honeywell-fta-t-18-digital-input-module","title":"Honeywell FTA-T-18 Digital Input Module","description":"\u003ch2\u003eHoneywell FTA-T-18 Digital Input Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell FTA‑T‑18\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003eFTA‑T‑18\u003c\/strong\u003e digital input module, operates as a discrete 24 VDC field‑signal acquisition card for controller backplane routing within Honeywell process‑control platforms.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eFTA‑T‑18\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eHoneywell process‑control systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e0.3 kg (0.87 kg packaged)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e100 mm × 80 mm × 40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e–40 deg C to +85 deg C (cabinet‑dependent limits typically 0 deg C to 60 deg C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e24 VDC \/ 20 mA per loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eInput Current\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e20 mA per loop\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOutput Logic\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e24 VDC \/ 20 mA routing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eChannel Count\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e16 discrete inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eIsolation\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eFull galvanic isolation between field loops and controller backplane\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eDIN rail or panel mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eChannel‑to‑Channel Isolation in Honeywell Discrete Input Cards\u003c\/h3\u003e\n\u003cp\u003eThe module applies galvanic isolation across all 16 field loops, preventing inductive spikes from propagating into the controller backplane. This isolation behavior aligns with Honeywell’s broader process‑control design practices, including predictable boundaries used in 4‑20 mA HART loop protocol and Fieldbus\/Profibus gateway modules. The fail‑safe execution path forces associated registers to a low‑potential state during wire breaks or circuit faults, enabling deterministic trip behavior.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the module support hot‑swap during operation?\u003c\/strong\u003e A: No. Removal or insertion must be performed during a controlled shutdown to avoid backplane disturbance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the module react to field‑wire breaks?\u003c\/strong\u003e A: The fail‑safe mechanism drives the affected register to a low‑potential state to trigger immediate trip logic.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the 16 channels electrically isolated from each other?\u003c\/strong\u003e A: Yes. Each loop is galvanically isolated from adjacent channels and from the controller backplane.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMaintain correct polarity on all 24 VDC field loops before energizing.\u003c\/li\u003e\n\u003cli\u003eSegregate discrete wiring from high‑voltage conductors to reduce inductive coupling.\u003c\/li\u003e\n\u003cli\u003eEnsure DIN rail or panel mounting provides mechanical stability under vibration.\u003c\/li\u003e\n\u003cli\u003eVerify isolation and fail‑safe behavior using system diagnostics after installation.\u003c\/li\u003e\n\u003cli\u003eKeep ambient temperature within cabinet‑rated limits to avoid thermal drift.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":44539517337699,"sku":"FTA-T-18","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/ce03caf7630af28fe06a604adc08487c.jpg?v=1722099641","url":"https:\/\/precisemodule.com\/products\/honeywell-fta-t-18-digital-input-module","provider":"Precise Module Ltd.","version":"1.0","type":"link"}