{"product_id":"1771-p7-allen-bradley-plc-5-power-supply","title":"1771-P7 Allen-Bradley PLC-5 Power Supply","description":"\u003ch2\u003eAllen-Bradley 1771-P7\/B PLC-5 AC Power Supply Module\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1771-P7\/B\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1771-P7\u003c\/strong\u003e AC Power Supply Module, operates as a dedicated hardware component for regulated backplane power distribution within PLC-5 and 1771 I\/O chassis platforms. The module converts 120 VAC input into 5 VDC output for processor, I\/O, and communication modules through the chassis backplane.\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-P7\/B\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\u003eUnited States\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2 lbs\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\u003e56 W real input power; 16 W power dissipation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e120 VAC nominal; 97-132 VAC range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Frequency\u003c\/td\u003e\n\u003ctd\u003e47-63 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Current\u003c\/td\u003e\n\u003ctd\u003e1.0 A at 120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApparent Input Power\u003c\/td\u003e\n\u003ctd\u003e89 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransformer Load\u003c\/td\u003e\n\u003ctd\u003e140 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5 VDC regulated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003eUp to 8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e1000 VAC withstand for 60 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuse Rating\u003c\/td\u003e\n\u003ctd\u003e2 A, 250 V slow-blow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e5-95% non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShock Rating\u003c\/td\u003e\n\u003ctd\u003e30 g peak operating; 50 g peak non-operating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVibration Rating\u003c\/td\u003e\n\u003ctd\u003e2 g at 10-500 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Type\u003c\/td\u003e\n\u003ctd\u003eOpen style\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 Backplane Power Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-P7\/B provides regulated 5 VDC power directly to the 1771 chassis backplane. The module occupies one chassis slot and supports power distribution to PLC-5 processors, I\/O modules, and communication interface modules. The AC input stage accepts 120 VAC sources and maintains the DC output required by connected chassis hardware.\u003c\/p\u003e\n\u003cp\u003eThe power supply includes DC output and power OK status indicators for local hardware verification. A shutdown signal is generated when AC input voltage decreases below the operating threshold, allowing the control system to execute valid memory protection procedures.\u003c\/p\u003e\n\u003cp\u003eThe module supports parallel connection using the 1771-CT cable to increase available current capacity or support redundant power configurations. Proper backplane loading calculation is required when combining multiple power sources.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What backplane voltage does the Allen-Bradley 1771-P7\/B provide?\u003cbr\u003eA: The module provides regulated 5 VDC output to the 1771 I\/O chassis backplane for connected PLC-5 system modules.\u003c\/p\u003e\n\u003cp\u003eQ: Can the 1771-P7\/B operate with input voltages other than 120 VAC?\u003cbr\u003eA: The specified operating input range is 97-132 VAC at 47-63 Hz. Operation outside this range is not specified.\u003c\/p\u003e\n\u003cp\u003eQ: Does the 1771-P7\/B support parallel operation?\u003cbr\u003eA: Yes. The module can be paralleled with other compatible supplies using a 1771-CT cable for increased current capacity or redundant power arrangements.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1771-P7\/B in an available slot of a compatible 1771 I\/O chassis and verify chassis power requirements before energizing the system. Connect the AC input wiring through the supplied terminal block according to the applicable electrical installation standards.\u003c\/p\u003e\n\u003cp\u003eMaintain separation between AC power wiring and low-level signal cables to reduce electrical interference. Connect cable shields using standard industrial grounding practices, with grounding points selected according to system cabinet design. Verify that the chassis backplane load does not exceed the available 5 VDC supply capacity before adding additional modules.\u003c\/p\u003e\n\u003cp\u003eWhen using parallel power supply configurations, install approved interconnection cables and confirm correct wiring polarity before startup. Ensure adequate cabinet ventilation and maintain the specified operating environment.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43700553613402,"sku":"1771-P7\/B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-P7B2_31697f58-92ab-4ed0-a66f-999c1b2df9ac.jpg?v=1784699707","url":"https:\/\/www.plcmasters.com\/products\/1771-p7-allen-bradley-plc-5-power-supply","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}