{"product_id":"allen-bradley-1771-p7b-power-supply-module","title":"Allen-Bradley 1771-P7B Power Supply Module","description":"\u003ch3\u003eAllen-Bradley 1771-P7B Power Supply Module\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen-Bradley 1771-P7B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eserves as the primary\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e1771-P7B\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003epower supply module utilized to execute chassis power conversion and backplane energization across PLC-5 and 1771 I\/O platforms.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cp\u003eThe supplied documentation identifies the 1771-P7B as a fixed catalog power supply module for PLC-5 and 1771 chassis systems. No configurable suffix matrix or hardware option segmentation is specified in the provided material.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003eParameterSpecification\u003c\/td\u003e\n\u003ctd\u003e\u003cbr\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e1771-P7B\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\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003ePLC-5 \/ 1771 I\/O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003ePower supply module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e100-240 VAC\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\u003e2.0 A at 120 VAC, 1.0 A at 220 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC, 5 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e10-16 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Rating\u003c\/td\u003e\n\u003ctd\u003e240-384 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;85 %\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRipple and Noise\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;200 mVpp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Features\u003c\/td\u003e\n\u003ctd\u003eOver-voltage, over-current, short-circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Method\u003c\/td\u003e\n\u003ctd\u003eDIN rail installation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP20 to IP67 depending on assembly configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003ePLC-5, 1771 I\/O chassis, Mini-PLC-2 systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupported Chassis\u003c\/td\u003e\n\u003ctd\u003e1771-A1B, A2B, A3B, A3B1, A4B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temp\u003c\/td\u003e\n\u003ctd\u003e-40 to 85 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity\u003c\/td\u003e\n\u003ctd\u003e5-95 % non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e127 mm x 76 mm x 23 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3.99 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBackplane Bus Power Distribution Characteristics\u003c\/h3\u003e\n\u003cp\u003eThe 1771-P7B distributes regulated DC power directly into the PLC-5 and 1771 backplane structure for processor, adapter, and I\/O module energization. Internal regulation stages maintain output stability during fluctuating AC input conditions across the specified universal voltage range.\u003c\/p\u003e\n\u003cp\u003eThe module supports deterministic backplane power delivery required by PLC-5 rack communication timing and distributed I\/O synchronization. Output ripple below 200 mVpp reduces propagation of switching noise into analogue and digital chassis circuitry.\u003c\/p\u003e\n\u003cp\u003eIntegrated protection circuitry monitors over-current, over-voltage, and short-circuit conditions within the supply stage. Fault handling limits excessive thermal stress on connected chassis assemblies and attached field-side modules.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Can the 1771-P7B be installed while the PLC chassis remains energized?\u003c\/p\u003e\n\u003cp\u003eA: The provided specifications do not define online insertion capability. Installation and removal procedures should therefore be performed with chassis power isolated.\u003c\/p\u003e\n\u003cp\u003eQ: Which PLC chassis assemblies are supported by the 1771-P7B?\u003c\/p\u003e\n\u003cp\u003eA: The module is specified for use with 1771-A1B, A2B, A3B, A3B1, and A4B chassis assemblies together with PLC-5 and compatible adapter modules.\u003c\/p\u003e\n\u003cp\u003eQ: What protection mechanisms are integrated into the power supply stage?\u003c\/p\u003e\n\u003cp\u003eA: The module includes over-voltage, over-current, and short-circuit protection functions to limit abnormal electrical loading conditions.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43413277474906,"sku":"1771-P7B","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1771-P7B2.jpg?v=1779690432","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1771-p7b-power-supply-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}