{"product_id":"05701-a-0325-honeywell-dc-input-card","title":"05701-A-0325 | Honeywell | DC Input Card","description":"\u003ch2\u003eHoneywell 05701-A-0325 DC Input Card\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 05701‑A‑0325\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e05701‑A‑0325\u003c\/strong\u003e DC Input Card, operates as the primary power‑entry module for routing 24 VDC supply and auxiliary backup inputs through the Engineering Card and sub‑rack backplane within Honeywell fixed‑gas control assemblies.\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\u003e05701‑A‑0325\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 industrial gas detection platforms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003e2 kg (shipping)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eStandard sub‑rack card form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eOperating Temp\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eIndustrial ambient range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003ePassive distribution card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eNominal 24 VDC external supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eDC Input Card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eConnectors\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eTwo‑part terminal block TB1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eProtection Features\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003eFuse protection, RFI filtering, reverse‑polarity protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eAux Inputs\u003c\/strong\u003e\u003c\/th\u003e\n\u003ctd\u003ePSU and AUX isolated by diodes\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 Power‑Distribution Cards\u003c\/h3\u003e\n\u003cp\u003eWithin Honeywell process‑control racks, the DC Input Card maintains deterministic separation between PSU and AUX paths using diode isolation. This prevents back‑feeding between supplies and stabilizes 24 VDC distribution across the backplane. The isolation approach 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.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the DC Input Card power all cards in the rack?\u003c\/strong\u003e A: Yes, but installations with more than eight 5704 Catalytic Cards should power Control Cards through their Quad Relay Interface Card to avoid excessive backplane current.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are PSU and AUX inputs electrically isolated?\u003c\/strong\u003e A: Yes. Diode isolation prevents cross‑flow between the primary and auxiliary supplies.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the card be removed without disconnecting wiring?\u003c\/strong\u003e A: Yes. The two‑part TB1 terminal block allows card removal while retaining field wiring.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoute the 24 VDC supply through TB1 and verify correct polarity before energizing.\u003c\/li\u003e\n\u003cli\u003eMaintain separation between PSU and AUX wiring to preserve diode isolation behavior.\u003c\/li\u003e\n\u003cli\u003eEnsure the fuse rating matches system requirements before commissioning.\u003c\/li\u003e\n\u003cli\u003eKeep DC wiring segregated from high‑voltage conductors to reduce interference.\u003c\/li\u003e\n\u003cli\u003eValidate backplane voltage distribution after installation using system diagnostics.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":44539502690403,"sku":"05701-A-0325","price":180.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/2775\/3315\/files\/b93e1f50c4cd3fff9f7ab02f1687a2c0.jpg?v=1700471919","url":"https:\/\/precisemodule.com\/products\/05701-a-0325-honeywell-dc-input-card","provider":"Precise Module Ltd.","version":"1.0","type":"link"}