{"product_id":"allen-bradley-1756-ob16-controllogix-digital-output-module","title":"Allen-Bradley 1756-OB16 ControlLogix Digital Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-OB16\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-OB16\u003c\/strong\u003e Digital Output Module, operates as a dedicated hardware component for high-density discrete load switching within ControlLogix chassis platforms. The unit executes direct electronic switching across 10-30 VDC sourcing output circuits to drive industrial solenoids, relays, and field indicators. Integrated hardware circuitry provides channel-to-bus galvanic isolation, preventing field-side voltage transients from compromising backplane communication logic and processing hardware.\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\u003e1756-OB16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eAllen-Bradley \/ Rockwell Automation\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\u003e5 Kg (Shipping Weight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003eControlLogix Single-Slot Standard Module\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\u003e5.5 W (Backplane dependent)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of Outputs\u003c\/td\u003e\n\u003ctd\u003e16 points (8 points per group)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage Range\u003c\/td\u003e\n\u003ctd\u003e10-30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003e24 VDC Sourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting Configuration\u003c\/td\u003e\n\u003ctd\u003eChassis Mount (1756 ControlLogix I\/O Chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRemovable Terminal Block\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH or 1756-TBSH (20-Pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eControlLogix System Architecture \u0026amp; Backplane Bus Velocity\u003c\/h3\u003e\n\u003cp\u003eThe module interfaces directly with the local ControlLogix backplane using high-velocity CIP (Common Industrial Protocol) messaging framing. Backplane bus communication velocity enables rapid, deterministic updates of output point states synchronized with the controller scan cycle. Scalable I\/O density features allow multiple 16-point output modules to co-exist within a single rack assembly without degrading backplane throughput. Firmware flash compatibility ensures seamless firmware maintenance and platform integration via Studio 5000 Logix Designer software.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: Does the 1756-OB16 support Removal and Insertion Under Power (RIUP)?\u003c\/p\u003e\n\u003cp\u003eA: Yes, the module can be removed or inserted while the backplane chassis is powered. However, power supply to the field-side Removable Terminal Block (RTB) must be isolated prior to hardware removal to prevent electric arcing and contact damage on terminal pins.\u003c\/p\u003e\n\u003cp\u003eQ: How is field wiring power isolated from internal controller logic on the 1756-OB16?\u003c\/p\u003e\n\u003cp\u003eA: Internal optical isolators separate the 5.1 VDC backplane logic circuitry from the external 10-30 VDC field power supply, providing continuous isolation between backplane communications and field-side wiring loops.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConnect chassis ground lug directly to the enclosure star ground point using short, heavy-gauge copper conductors to satisfy IEEE 1100 industrial grounding requirements.\u003c\/li\u003e\n\u003cli\u003eEnsure the 20-pin Removable Terminal Block (RTB) locking latches click securely into the top and bottom chassis keyways before applying field power.\u003c\/li\u003e\n\u003cli\u003eMaintain physical separation between 24 VDC output wiring and high-voltage AC conductors within panel cable ducting to reduce inductive crosstalk.\u003c\/li\u003e\n\u003cli\u003eInstall external surge suppression devices, such as flyback diodes, across inductive DC loads to clamp reverse inductive voltage spikes during switching transitions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":48786279006398,"sku":"1756-OB16","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/1756-OB16I_82b5362b-48d1-4c22-a50d-27809d4d38d2.png?v=1787710371","url":"https:\/\/www.autooiltech.com\/ar\/products\/allen-bradley-1756-ob16-controllogix-digital-output-module","provider":"AutoOilTech Limited","version":"1.0","type":"link"}