{"product_id":"allen-bradley-1771-ofe3-analog-output-module","title":"Allen-Bradley 1771-OFE3 Analog Output Module","description":"\u003ch2\u003eAllen-Bradley 1771-OFE3 Analog Output Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for isolated analog current signal generation in the PLC-5 I\/O system, the \u003cstrong\u003eAllen-Bradley 1771-OFE3\u003c\/strong\u003e (\u003cstrong\u003e1771-OFE3\u003c\/strong\u003e Analog Output Module) provides direct electrical execution through four differential output channels. The module converts PLC data values into 0-50 mA analog outputs with individually isolated channels for field device control.\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-OFE3\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\u003e2.58 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e13.1 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003ePLC-5 1771 I\/O Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e4 individually isolated differential outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal Range\u003c\/td\u003e\n\u003ctd\u003e0-50 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1000 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Format\u003c\/td\u003e\n\u003ctd\u003eNatural Binary or BCD scaling to +\/-9999\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExternal Power Requirement\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e2.5 A at 5 VDC\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\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\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eEtherNet\/IP and PLC-5 I\/O Signal Processing Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OFE3 operates within the Allen-Bradley PLC-5 1771 I\/O architecture and exchanges output data through the chassis backplane interface. The module supports four individually isolated differential analog outputs, allowing separate current loops to be controlled from PLC-generated digital values.\u003c\/p\u003e\n\u003cp\u003eThe module design includes PLC-5 I\/O density scaling characteristics through four-channel analog output integration. The conformal coating provides a protective layer over electronic assemblies for installations where humidity and corrosive chemical exposure may affect circuit surfaces. The module is configured with installed jumpers, allowing operation without additional operator configuration before activation.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What type of analog signals does the 1771-OFE3 generate?\u003cbr\u003eA: The module provides four differential analog current outputs with a 0-50 mA output range.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-OFE3 require an external field power supply?\u003cbr\u003eA: No. The module operates from the PLC-5 backplane interface and does not require an external power source.\u003c\/p\u003e\n\u003cp\u003eQ: What isolation method is provided between output channels?\u003cbr\u003eA: Each analog output channel is individually isolated with a rated isolation voltage of 1000 V.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-OFE3 module in a compatible PLC-5 1771 I\/O rack following the chassis slot assignment and keying requirements. Confirm backplane power availability before inserting the module.\u003c\/p\u003e\n\u003cp\u003eConnect analog field wiring through the specified 1771-WH wiring arm. Use shielded cables for low-level current signal circuits where electromagnetic interference may affect measurement stability. Terminate cable shields according to the site grounding standard and avoid multiple ground points that may introduce ground loops.\u003c\/p\u003e\n\u003cp\u003eRoute analog output wiring separately from high-voltage power cables, motor conductors, and switching devices. Verify channel isolation requirements before connecting external field instruments.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43687581778010,"sku":"1771-OFE3","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-OFE32.jpg?v=1784620092","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-ofe3-analog-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}