{"product_id":"honeywell-05701-a-0329-triple-dpco-relay-card","title":"Honeywell 05701-A-0329 Triple DPCO Relay Card","description":"\u003cp\u003eConfigured for gas detection interface management in System 57 platforms, the \u003cstrong\u003eHoneywell 05701-A-0329\u003c\/strong\u003e (\u003cstrong\u003e05701-A-0329\u003c\/strong\u003e Relay Card) provides direct physical signal switching via 8 changeover relays. The module operates as a triple DPCO (Double Pole Change Over) interface card, utilizing a 24 V DC supply to execute discrete logic-driven contact outputs within gas monitoring architectures.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e05701-A-0329\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eNot specified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard System 57 card format\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003eConsult System 57 technical manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Configuration\u003c\/td\u003e\n\u003ctd\u003e8 Changeover Relays\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface Type\u003c\/td\u003e\n\u003ctd\u003eTriple DPCO\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\u003c\/h3\u003e\n\u003cp\u003eThe 05701-A-0329 relay card incorporates galvanic isolation to maintain electrical separation between individual relay channels and the control backplane. This design prevents common-mode noise propagation and ensures that fault conditions on external field devices do not impact the integrity of the System 57 processing unit. Maintaining these isolation barriers is required to preserve the reliability of the gas detection trip logic and to protect the card circuitry from transient voltage spikes originating from inductive relay loads.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does this relay card support hot-swapping during normal system operation?\u003c\/p\u003e\n\u003cp\u003eA: No. The card must be removed or inserted only when the System 57 rack is de-energized to prevent arcing and potential damage to the backplane communication pins.\u003c\/p\u003e\n\u003cp\u003eQ: How should inductive loads be handled when connected to these relay outputs?\u003c\/p\u003e\n\u003cp\u003eA: Inductive loads must be equipped with external suppression diodes or RC snubbers to prevent back-EMF from damaging the relay contacts and compromising the galvanic isolation barrier.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Insertion\u003c\/strong\u003e: Slide the card into the designated System 57 rack slot. Ensure that the card is fully seated against the backplane connector to avoid intermittent contact or logic errors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiring Requirements\u003c\/strong\u003e: Utilize shielded cable for all field connections to relay outputs. Ensure the cable shield is terminated at the designated rack ground point to minimize interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContact Protection\u003c\/strong\u003e: Observe the maximum contact voltage and current ratings specified in the system documentation. Do not exceed these limits, as relay contact welding may occur.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Routing\u003c\/strong\u003e: Route relay output wiring through separate conduit runs from sensitive low-voltage sensor cables to prevent crosstalk and signal contamination.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":52972191744309,"sku":"05701-A-0329","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/05701-A-0329.png?v=1780898830","url":"https:\/\/www.5gplc.com\/products\/honeywell-05701-a-0329-triple-dpco-relay-card","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}