{"product_id":"allen-bradley-1771-ow-selectable-relay-output-module","title":"Allen-Bradley 1771-OW Selectable Relay Output Module","description":"\u003ch2\u003eAllen-Bradley 1771-OW Selectable Relay Output Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-OW\u003c\/strong\u003e (\u003cstrong\u003e1771-OW\u003c\/strong\u003e Selectable Relay Output Module) operates as a dedicated hardware component for relay contact switching within the PLC-5 1771 I\/O system. The module provides eight selectable relay outputs with configurable normally open or normally closed contact operation for AC and DC field circuits.\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\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\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-OW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley\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\u003e1.15 lbs \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e3.3-3.7 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eRelay Output Modules\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003e1771 Product Bulletin \/ PLC-5 1771 I\/O Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e8 relay contact outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003e4 groups of 2 channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Form\u003c\/td\u003e\n\u003ctd\u003eSelectable Normally Open (N.O.) \/ Normally Closed (N.C.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefault Configuration\u003c\/td\u003e\n\u003ctd\u003eNormally Open (N.O.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e24-138 VAC RMS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Operating Voltage\u003c\/td\u003e\n\u003ctd\u003e24-125 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current Rating per Channel\u003c\/td\u003e\n\u003ctd\u003e1.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Contact Load\u003c\/td\u003e\n\u003ctd\u003eAC: 10 mA at 24 V \/ DC: 10 mA at 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e700 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e11.3-12.7 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Wiring Arm\u003c\/td\u003e\n\u003ctd\u003eCat. No. 1771-WD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm\u003c\/td\u003e\n\u003ctd\u003e1771-WH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Arm Screw Torque\u003c\/td\u003e\n\u003ctd\u003e7-9 inch-pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay (AC Off)\u003c\/td\u003e\n\u003ctd\u003e45 +\/-15 ms typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Delay (DC Off)\u003c\/td\u003e\n\u003ctd\u003e50 ms typical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Coating\u003c\/td\u003e\n\u003ctd\u003eConformal coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eRack mountable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003ePLC-5 Deterministic Relay Output Control Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OW operates within the Allen-Bradley PLC-5 1771 I\/O architecture and exchanges control data through the chassis backplane interface. The module provides I\/O density scaling through eight relay output points arranged in four independent groups of two channels.\u003c\/p\u003e\n\u003cp\u003eThe relay output design supports configurable contact orientation, allowing each output channel to operate as Normally Open or Normally Closed according to application requirements. The module maintains PLC-5 deterministic output execution through rack-based addressing and backplane communication while providing electrical separation between relay contacts and the controller logic interface.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What contact configurations are supported by the 1771-OW module?\u003cbr\u003eA: Each relay output channel can be configured as Normally Open (N.O.) or Normally Closed (N.C.), with Normally Open as the default configuration.\u003c\/p\u003e\n\u003cp\u003eQ: How many relay outputs are available on the 1771-OW?\u003cbr\u003eA: The module provides eight relay contact output channels arranged as four groups of two channels.\u003c\/p\u003e\n\u003cp\u003eQ: What field wiring interface is used with the module?\u003cbr\u003eA: The module uses the Cat. No. 1771-WD field wiring arm and is installed in a compatible 1771 I\/O chassis.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-OW module in a compatible 1771 I\/O chassis using the specified keying positions and field wiring arm. Verify relay contact configuration before connecting external AC or DC field circuits.\u003c\/p\u003e\n\u003cp\u003eUse wiring methods suitable for relay switching applications and maintain separation between relay output conductors and low-level analog or communication wiring. Apply grounding practices according to the control cabinet design standard when shielded cables are used.\u003c\/p\u003e\n\u003cp\u003eConfirm contact voltage, load current, and contact orientation before energizing the module. Ensure connected loads remain within the specified relay contact electrical ratings.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43688761065562,"sku":"1771-OW","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-OW2.jpg?v=1784621154","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-ow-selectable-relay-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}