{"product_id":"allen-bradley-1771-ofe1-plc-5-analog-output-module","title":"Allen-Bradley 1771-OFE1 PLC-5 Analog Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-OFE1\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-OFE1\u003c\/strong\u003e Analog Output Module, operates as a dedicated hardware component for precision analog voltage\/current signal generation within Allen-Bradley PLC-5 systems. It converts digital words from the system processor into 4 independent analog control signals with 12-bit conversion resolution to control field actuators, valves, and drive speed references.\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\u003e1771-OFE1\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\u003e1.20 lbs (0.54 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStandard 1771 Single-Slot I\/O Module Form Factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eBackplane bus power + external loop supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eAnalog Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Count\u003c\/td\u003e\n\u003ctd\u003e4 Points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResolution\u003c\/td\u003e\n\u003ctd\u003e12 Bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignal Types\u003c\/td\u003e\n\u003ctd\u003eAnalog Current \/ Voltage Output Ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus Communication Velocity \u0026amp; I\/O Density Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1771-OFE1 utilizes block transfer read\/write (BTR\/BTW) operations across the 1771 backplane to transfer multi-channel analog output data without degrading backplane bus communication velocity. Internal digital-to-analog converters deliver continuous 12-bit signal conversion, ensuring linear control accuracy across all 4 isolated output channels. Digital filtering and channel-to-backplane galvanic isolation prevent field noise, earth loops, and electromagnetic interference from disturbing system processor logic.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: How is output data transferred between the PLC-5 processor and the 1771-OFE1 module?\u003c\/p\u003e\n\u003cp\u003eA: Data transfer is executed via Block Transfer Write (BTW) instructions configured in ladder logic, transferring digital values to the module's 12-bit output channels.\u003c\/p\u003e\n\u003cp\u003eQ: Are individual output channels on the 1771-OFE1 isolated from backplane logic?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module incorporates optoelectronic isolation between the internal backplane logic bus and the field-side analog output circuitry.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackplane Slot Alignment:\u003c\/strong\u003e Verify chassis keying plastic bands are positioned per 1771-OFE1 requirements, then slide the module into the assigned 1771 chassis slot until fully seated.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal Cable Shielding:\u003c\/strong\u003e Use individually shielded twisted-pair conductors for analog signal lines. Connect shield drain wires to chassis earth ground at one end only to prevent ground loops.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExternal Power \u0026amp; Wiring:\u003c\/strong\u003e Connect the field power supply and analog output conductors to the designated wiring arm, ensuring correct polarity for current or voltage loops before locking the wiring arm into place.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52678051496216,"sku":"1771-OFE1","price":270.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0892\/3483\/3688\/files\/1771-OFE12_Cocoai_9dd154f6-2126-42ec-a367-89d63ec68893.jpg?v=1789373683","url":"https:\/\/www.innoplcsync.com\/products\/allen-bradley-1771-ofe1-plc-5-analog-output-module","provider":"InnoPLC Sync Co., Ltd.","version":"1.0","type":"link"}