{"product_id":"allen-bradley-1771-p7-plc-5-stand-alone-power-supply","title":"Allen-Bradley 1771-P7 PLC-5 Stand-Alone Power Supply","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-P7\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-P7\u003c\/strong\u003e Power Supply, operates as a dedicated hardware component for chassis backplane power distribution within Allen-Bradley PLC-5 control systems.\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-P7\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\u003e4.25 lbs (1.93 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eStand-Alone Chassis 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 (32 to 140 deg F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e108 W (Real Input Power), 176 VA Max (Apparent Power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eStand-Alone AC Power Supply\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC \/ 220 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e97-132 VAC \/ 195-264 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e47 to 63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Output Current\u003c\/td\u003e\n\u003ctd\u003e16 A @ 5 VDC (5.06 VDC nominal output)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Transformer Load\u003c\/td\u003e\n\u003ctd\u003e270 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal Fuse\u003c\/td\u003e\n\u003ctd\u003e3 A, 250 V, Normal-Blow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParalleling Capability\u003c\/td\u003e\n\u003ctd\u003eNone (Strictly Stand-Alone)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eBackplane Bus \u0026amp; Power Isolation Execution\u003c\/h3\u003e\n\u003cp\u003eThe 1771-P7 converts 120\/220 VAC line power into a regulated 5.06 VDC backplane supply, delivering up to 16 A to power 1771 Universal I\/O chassis backplanes and PLC-5 processors. Utilizing external D-shell cable interfaces (1771-CP1, 1771-CP2, or 1771-CP3), the supply maintains electrical isolation between line-side AC sources and low-voltage logic circuitry, ensuring stable power delivery across high-density I\/O configurations.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can two 1771-P7 power supply units be connected in parallel to increase chassis output current?\u003c\/p\u003e\n\u003cp\u003eA: No, the 1771-P7 is designed strictly as a stand-alone unit. Attempting to connect units in parallel can cause voltage instability, processor memory loss, and system shutdown.\u003c\/p\u003e\n\u003cp\u003eQ: What power cable options connect the 1771-P7 power supply to a 1771 I\/O chassis?\u003c\/p\u003e\n\u003cp\u003eA: The supply uses the 1771-CP1 local cable (for mounting on the left side of the chassis) or 1771-CP2 \/ 1771-CP3 remote cables (5 ft \/ 5.5 ft max distance).\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhysical Mounting\u003c\/strong\u003e: Mount the 1771-P7 directly onto the panel on the left side of the 1771 I\/O chassis. If mounted as a separate standalone unit, maintain at least 6 inches (152 mm) of vertical clearance for convection airflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJump Setting\u003c\/strong\u003e: Configure the chassis jumper to the \"N\" position prior to applying power when utilizing an external 1771-P7 power supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Cable Connection\u003c\/strong\u003e: Connect the D-shell power cable (1771-CP1, 1771-CP2, or 1771-CP3) between the power supply output connector and the chassis backplane power socket. Secure retaining screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine Voltage \u0026amp; Grounding\u003c\/strong\u003e: Wire AC mains supply to the input terminals, ensuring the panel safety ground conductor terminates at the dedicated frame ground stud to mitigate high-frequency EMI.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eESD \u0026amp; Hot-Swap Restrictions\u003c\/strong\u003e: Never connect or disconnect the power supply cable while AC line voltage is applied to avoid arcing and damage to backplane connector pins.\u003c\/li\u003e\n\u003c\/ol\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48770302509246,"sku":"1771-P7","price":95.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1771-P7_2.jpg?v=1787296451","url":"https:\/\/www.autooiltech.com\/products\/allen-bradley-1771-p7-plc-5-stand-alone-power-supply","provider":"AutoOilTech Limited","version":"1.0","type":"link"}