{"product_id":"allen-bradley-1756-ob8ei-controllogix-digital-dc-sourcing-output-module","title":"Allen-Bradley 1756-OB8EI ControlLogix Digital DC Sourcing Output Module","description":"\u003ch2\u003eAllen-Bradley 1756-OB8EI ControlLogix Digital DC Sourcing Output Module\u003c\/h2\u003e\n\u003cp\u003eConfigured for individually isolated DC output switching in ControlLogix platforms, the \u003cstrong\u003eAllen-Bradley 1756-OB8EI\u003c\/strong\u003e (\u003cstrong\u003e1756-OB8EI\u003c\/strong\u003e Digital DC Sourcing Output Module) provides direct physical\/electrical execution. The module contains eight electronically fused sourcing output channels with 10-30 VDC operation, individual channel isolation, and ControlLogix backplane communication.\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\u003e1756-OB8EI\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\u003e0.50 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e4.7 W maximum at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital DC Sourcing Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Line\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e8 points\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDC Sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003eIndividually isolated, electronically fused channels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output Current per Point\u003c\/td\u003e\n\u003ctd\u003e2 A at 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Output Current per Module\u003c\/td\u003e\n\u003ctd\u003e10 A at 60 deg C; 16 A at 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 5.1 VDC\u003c\/td\u003e\n\u003ctd\u003e250 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current at 24 VDC\u003c\/td\u003e\n\u003ctd\u003e2 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal Delay OFF to ON\u003c\/td\u003e\n\u003ctd\u003e1 ms maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Signal Delay ON to OFF\u003c\/td\u003e\n\u003ctd\u003e5 ms maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e50 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemovable Terminal Blocks\u003c\/td\u003e\n\u003ctd\u003e1756-TBCH, 1756-TBS6H\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\u003eControlLogix Backplane Communication and I\/O Scaling\u003c\/h3\u003e\n\u003cp\u003eThe 1756-OB8EI operates within the ControlLogix architecture using backplane bus communication for controller-to-I\/O data transfer. The individually isolated output structure supports distributed field device control while maintaining separation between output channels.\u003c\/p\u003e\n\u003cp\u003eThe module supports I\/O density scaling across ControlLogix chassis configurations and provides firmware flash compatibility within the ControlLogix module management environment. Electronic channel fusing provides output circuit protection monitoring, while the sourcing output design supports connection to DC field loads requiring controlled voltage delivery.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What output protection function is integrated into the 1756-OB8EI?\u003cbr\u003eA: Each output channel includes electronic fusing for individual channel protection.\u003c\/p\u003e\n\u003cp\u003eQ: How many isolated output channels are available on this module?\u003cbr\u003eA: The module provides eight individually isolated DC sourcing output channels.\u003c\/p\u003e\n\u003cp\u003eQ: What are the backplane power requirements of the 1756-OB8EI?\u003cbr\u003eA: The module requires 250 mA at 5.1 VDC backplane power and 2 mA at 24 VDC backplane power.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eInstall the 1756-OB8EI module into a compatible ControlLogix chassis and verify proper mechanical connection with the backplane interface. Confirm that field devices connected to each output channel operate within the specified 10-30 VDC voltage range and output current limits.\u003c\/p\u003e\n\u003cp\u003eUse the specified removable terminal blocks for field wiring termination. Route DC output conductors separately from high-voltage power cables and high-noise switching circuits. Apply grounding and shielding methods according to the site electrical installation standard. Verify channel wiring polarity, terminal seating, and module configuration before applying field power.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":43623468269658,"sku":"1756-OB8EI","price":123.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/4601\/3530\/files\/1756-OB8EI2.jpg?v=1783568389","url":"https:\/\/www.plcmasters.com\/products\/allen-bradley-1756-ob8ei-controllogix-digital-dc-sourcing-output-module","provider":"PLC Masters Ltd.","version":"1.0","type":"link"}