{"product_id":"1756-ob16i-allen-bradley-controllogix-16-point-dc-isolated-output-module","title":"1756-OB16I Allen-Bradley ControlLogix 16 Point DC Isolated Output Module","description":"\u003cp\u003eThe \u003cstrong\u003eAllen-Bradley 1756-OB16I\/A\u003c\/strong\u003e, also cataloged as the \u003cstrong\u003e1756-OB16I\u003c\/strong\u003e Digital Output Module, provides 16 individually isolated 12\/24 VDC output channels for switching field loads from a ControlLogix controller.\u003c\/p\u003e\n\u003ch3\u003eModel Reference\u003c\/h3\u003e\n\u003cp\u003eThe 1756-OB16I is a ControlLogix DC digital output module with 16 individually isolated channels. The module supports configurable output states and uses electronic protection for abnormal output conditions. The supplied spare reference is 1756-OB16I\/A.\u003c\/p\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure\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-OB16I\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpare Model\u003c\/td\u003e\n\u003ctd\u003e1756OB16I, 1756-OB16I\/A\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\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eControlLogix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Type\u003c\/td\u003e\n\u003ctd\u003eDigital Output Module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Channels\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Type\u003c\/td\u003e\n\u003ctd\u003eDC isolated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e12\/24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Configuration\u003c\/td\u003e\n\u003ctd\u003eSourcing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Isolation\u003c\/td\u003e\n\u003ctd\u003eIndividual channel isolation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e24 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e2 A maximum per channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule Current Capacity\u003c\/td\u003e\n\u003ctd\u003e16 A maximum per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Load Current\u003c\/td\u003e\n\u003ctd\u003e1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOff-State Leakage\u003c\/td\u003e\n\u003ctd\u003e0.5 mA maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-State Voltage Drop\u003c\/td\u003e\n\u003ctd\u003e0.5 V maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Delay, Off to On\u003c\/td\u003e\n\u003ctd\u003e70 us maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Delay, On to Off\u003c\/td\u003e\n\u003ctd\u003e1 ms maximum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Current\u003c\/td\u003e\n\u003ctd\u003e250 mA at 5.1 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBackplane Power\u003c\/td\u003e\n\u003ctd\u003e1.28 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e5.6 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermal Dissipation\u003c\/td\u003e\n\u003ctd\u003e19.1 BTU\/hr\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e250 V continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e0 to 60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlot Width\u003c\/td\u003e\n\u003ctd\u003e1 ControlLogix slot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminal Block Options\u003c\/td\u003e\n\u003ctd\u003e1756-TBNH, 1756-TBSH\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\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eUSA, supplied reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.35 kg, supplied reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e23.3 x 18.2 x 5.3 cm, supplied reference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eDC Output and Channel Isolation\u003c\/h3\u003e\n\u003cp\u003eThe 1756-OB16I provides 16 output channels with individual channel isolation. This construction permits each output circuit to be wired as a separate field interface without treating the sixteen channels as a single electrically common group.\u003c\/p\u003e\n\u003cp\u003eThe output is intended for 12\/24 VDC circuits. Maximum output current is 2 A per channel, subject to the module's total current and environmental limitations.\u003c\/p\u003e\n\u003cp\u003eElectronic output protection limits the effect of short-circuit and overload conditions. A faulted output should be corrected according to the module diagnostic and field wiring requirements before normal operation is restored.\u003c\/p\u003e\n\u003ch3\u003eIndustrial Control Interface\u003c\/h3\u003e\n\u003cp\u003eThe module exchanges output commands and status information with the ControlLogix controller through the chassis backplane. Output transition time is determined by the module hardware response together with the controller scan and application logic.\u003c\/p\u003e\n\u003cp\u003eThe specified maximum output delay is 70 us for off-to-on operation and 1 ms for on-to-off operation. These values describe module-level switching response and do not represent the complete end-to-end controller response time.\u003c\/p\u003e\n\u003cp\u003eThe 1756-OB16I occupies one ControlLogix chassis slot and uses a removable terminal block interface. Compatible terminal block families include the 1756-TBNH and 1756-TBSH.\u003c\/p\u003e\n\u003ch3\u003eBackplane Loading and Firmware Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe module draws 250 mA from the 5.1 VDC ControlLogix backplane supply. The specified backplane power is 1.28 W, while maximum module power dissipation is 5.6 W.\u003c\/p\u003e\n\u003cp\u003eThe module configuration and diagnostic behavior are handled through the ControlLogix programming environment. Controller and I\/O-module firmware compatibility should be checked before changing controller firmware or migrating an existing project.\u003c\/p\u003e\n\u003ch3\u003eOrdering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Allen-Bradley 1756-OB16I ControlLogix 16 Point DC Digital Output Module\u003c\/li\u003e\n\u003cli\u003e1 x 1756-OB16I module assembly\u003c\/li\u003e\n\u003cli\u003e1 x Compatible removable terminal block, selected separately when required\u003c\/li\u003e\n\u003cli\u003e1 x ControlLogix chassis position is required for installation\u003c\/li\u003e\n\u003cli\u003eField wiring, terminal-block accessories, and external protection devices are separate system components unless specifically configured\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and Wiring Guidelines\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOutput wiring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVerify the field circuit voltage before connecting the output terminals.\u003c\/li\u003e\n\u003cli\u003eUse conductors sized for the required load current and installation conditions.\u003c\/li\u003e\n\u003cli\u003eKeep output wiring away from high-voltage and high-current switching circuits where practical.\u003c\/li\u003e\n\u003cli\u003eConfirm the load current for each channel before energizing the module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eChannel isolation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTreat each isolated output as an independent field circuit.\u003c\/li\u003e\n\u003cli\u003eDo not connect output commons together unless the external circuit design explicitly requires it.\u003c\/li\u003e\n\u003cli\u003eObserve the specified isolation limits when wiring separate voltage domains.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eLoad protection\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eUse suitable suppression for inductive loads such as relays, contactors, and solenoids.\u003c\/li\u003e\n\u003cli\u003eVerify that any external suppression device is compatible with the load voltage and polarity.\u003c\/li\u003e\n\u003cli\u003eDo not use the module's electronic protection as a substitute for correctly rated external load protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInstall the module in a compatible ControlLogix chassis.\u003c\/li\u003e\n\u003cli\u003eCheck the chassis power budget after adding the output module.\u003c\/li\u003e\n\u003cli\u003eEnsure the removable terminal block is fully seated before applying field power.\u003c\/li\u003e\n\u003cli\u003eFollow the ControlLogix grounding and cabinet wiring requirements for the complete installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow many outputs does the 1756-OB16I provide?\u003c\/strong\u003e\u003cbr\u003eThe module provides 16 DC digital output channels. Each channel is individually isolated for separate field circuit connection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat voltage does the module switch?\u003c\/strong\u003e\u003cbr\u003eThe 1756-OB16I is a 12\/24 VDC digital output module. The actual applied voltage must remain within the specified field circuit limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAre the output channels individually isolated?\u003c\/strong\u003e\u003cbr\u003eYes. The module provides individual channel isolation, allowing separate output circuits without treating all channels as one common electrical group.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the maximum output current?\u003c\/strong\u003e\u003cbr\u003eThe specified maximum output current is 2 A per channel. The total module load must also remain within the manufacturer's overall current limitations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the backplane current draw?\u003c\/strong\u003e\u003cbr\u003eThe module draws 250 mA from the 5.1 VDC ControlLogix backplane supply. Its specified backplane power is 1.28 W.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat are the output switching delays?\u003c\/strong\u003e\u003cbr\u003eModule-level delay is specified at 70 us maximum for off-to-on switching and 1 ms maximum for on-to-off switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhich terminal blocks can be used?\u003c\/strong\u003e\u003cbr\u003eRockwell Automation identifies 1756-TBNH and 1756-TBSH as compatible removable terminal block options for this module family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoes the module require a separate ControlLogix chassis?\u003c\/strong\u003e\u003cbr\u003eYes. The 1756-OB16I is a chassis-based I\/O module and occupies one ControlLogix chassis slot for backplane communication.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":46066421072045,"sku":"1756-OB16I","price":88.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/allen-bradley_1756-ob16i_1.jpg?v=1786977906","url":"https:\/\/www.maxwellplc.com\/ru\/products\/1756-ob16i-allen-bradley-controllogix-16-point-dc-isolated-output-module","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}