{"product_id":"05701-a-0329-honeywell-triple-dpco-double-pole-changeover-relay-card","title":"05701-A-0329 | Honeywell Triple DPCO (Double Pole Changeover) Relay Card","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell 05701-A-0329\u003c\/strong\u003e is a \u003cstrong\u003eTriple DPCO (Double Pole Changeover) Relay Card\u003c\/strong\u003e with integrated \u003cstrong\u003e4-20 mA analog output\u003c\/strong\u003e for the System 57 gas detection platform. It provides eight DPCO relays (two each for A1, A2, A3, plus Fault and Inhibit) and a proportional current loop output for external DCS\/PLC integration.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e 05701-A-0329\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e Honeywell System 57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Triple DPCO Relay Card with 4-20mA Output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Configuration:\u003c\/strong\u003e 8 Total — 2× A1, 2× A2, 2× A3, 1× Fault, 1× Inhibit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay Contact Type:\u003c\/strong\u003e Double Pole Change Over (DPCO)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog Output:\u003c\/strong\u003e \u003cstrong\u003e4-20 mA\u003c\/strong\u003e Current Loop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Accuracy:\u003c\/strong\u003e ±0.5% FS Typical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Power:\u003c\/strong\u003e 24 VDC (via System 57 Backplane)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e \u003cstrong\u003e1.6W\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation:\u003c\/strong\u003e Galvanic isolation between channels and system logic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 170 mm × 25 mm × 112 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 245g (0.165 kg module; shipping weight 2.5 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -20°C to +50°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCore Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDual-functionality: relay outputs + 4-20 mA proportional signal retransmission\u003c\/li\u003e\n\u003cli\u003eRedundant DPCO switching logic with NO and NC contacts for fail-safe design\u003c\/li\u003e\n\u003cli\u003eReal-time concentration monitoring on SCADA via 4-20 mA output\u003c\/li\u003e\n\u003cli\u003eGalvanic isolation protects System 57 backplane from field-side noise\u003c\/li\u003e\n\u003cli\u003eTiered alarm response: A1 (low-speed ventilation), A2 (high-speed exhaust), A3 (shutdown)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFacility-wide gas safety and proportional process control\u003c\/li\u003e\n\u003cli\u003eSCADA\/DCS integration for remote monitoring\u003c\/li\u003e\n\u003cli\u003eEmergency shutdown (ESD) systems\u003c\/li\u003e\n\u003cli\u003eVentilation and damper control\u003c\/li\u003e\n\u003cli\u003eFire and gas detection alarm management\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many relays does the 05701-A-0329 provide?\u003c\/strong\u003e\u003cbr\u003e\nA: Eight relays total: two each for A1, A2, and A3 alarm levels, plus one Fault and one Inhibit relay.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Is the 4-20 mA output compatible with third-party PLCs?\u003c\/strong\u003e\u003cbr\u003e\nA: Yes, the standard 4-20 mA current loop ensures compatibility with Siemens, Rockwell, ABB, Yokogawa, and other industrial controllers.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eQ: Does this card support hot-swapping?\u003c\/strong\u003e\u003cbr\u003e\nA: No. Power down the System 57 rack before installation or removal to prevent backplane damage.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003ePower down the System 57 rack completely.\u003c\/li\u003e\n\u003cli\u003eInsert the relay card into the designated sub-rack slot.\u003c\/li\u003e\n\u003cli\u003eConnect field relay wiring to the DPCO terminals.\u003c\/li\u003e\n\u003cli\u003eConnect the 4-20 mA output to the external DCS\/PLC input.\u003c\/li\u003e\n\u003cli\u003eConfigure alarm setpoints and relay operation via the engineering card.\u003c\/li\u003e\n\u003cli\u003eTest all relay outputs and analog signal accuracy before commissioning.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSelection Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eChoose 05701-A-0329 when both relay outputs AND 4-20 mA retransmission are needed.\u003c\/li\u003e\n\u003cli\u003eFor relay-only applications, consider 05701-A-0328 (Triple SPCO) or 05701-A-0327 (Double SPCO).\u003c\/li\u003e\n\u003cli\u003eFor redundant relay outputs per alarm level, consider 05701-A-0330 (High Integrity).\u003c\/li\u003e\n\u003cli\u003eVerify load current requirements do not exceed 5A per relay contact.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":53827276406968,"sku":"05701-A-0329","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/05701-A-0329_3r180.png?v=1785223327","url":"https:\/\/www.globalpetroparts.com\/products\/05701-a-0329-honeywell-triple-dpco-double-pole-changeover-relay-card","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}