{"product_id":"1756-ob32-allen-bradley-controllogix-dc-output-module-32-point-unit","title":"1756-OB32 Allen-Bradley ControlLogix DC Output Module - 32-Point Unit","description":"\u003ch3\u003eExecutive Engineering Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e1756-OB32\u003c\/strong\u003e is a high-density, 32-channel discrete DC output module engineered by \u003cstrong\u003eAllen-Bradley \/ Rockwell Automation\u003c\/strong\u003e for the \u003cstrong\u003eControlLogix\u003c\/strong\u003e automation platform. Designed for sourcing configurations within a 10 to 31.2V DC operating range, this single-slot module efficiently drives critical panel actuators—such as solenoids, contactors, pilot lamps, and sirens—while maximizing cabinet space efficiency in local or remote chassis architectures.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specification Matrix\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eEngineering Parameter\u003c\/th\u003e\n\u003cth\u003eModule Specification Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRockwell Automation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAllen-Bradley\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/www.plcsparehub.com\/collections\/allen-bradley-1756-controllogix\"\u003e\u003cstrong\u003eControlLogix\u003c\/strong\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number \/ Catalog No.\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1756-OB32\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Sourcing Output Module\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Channels\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e32 Points (arranged in 2 groups of 8 channels)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e10 to 31.2 Volts DC (12\/24V DC nominal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Rating per Point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e0.5 A at 50°C; 0.35 A at 60°C (linear derating)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Rating per Module\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e16 A at 50°C; 10 A at 60°C (linear derating)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Switching Delay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eOFF to ON: 60 microseconds nom \/ 1 ms max\u003cbr\u003eON to OFF: 200 microseconds nom \/ 1 ms max\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBackplane Current Draw\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e300 mA at 5 Volts DC; 2 mA at 24 Volts DC\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Terminals (RTB)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1756-TBCH (cage clamp) or 1756-TBS6H (spring clamp)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eFunctional Architecture \u0026amp; Field Interfacing\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChannel Distribution and Sourcing\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eFeatures \u003cstrong\u003e32 individual output channels\u003c\/strong\u003e separated into independent groups to support structured field wiring.\u003c\/li\u003e\n\u003cli\u003eOperates strictly in a \u003cstrong\u003esourcing configuration\u003c\/strong\u003e, providing positive switching voltage to connected loads.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemovable Terminal Block (RTB) Integration\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eInterfaces with field wiring via the \u003cstrong\u003e1756-TBCH\u003c\/strong\u003e or \u003cstrong\u003e1756-TBS6H\u003c\/strong\u003e terminal blocks.\u003c\/li\u003e\n\u003cli\u003ePermits complete RTB transfer during module replacement without disturbing physical field-side wire terminations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB Insight\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eGlobal PLC Spare HUB's Insight:\u003c\/strong\u003e When designing high-density control panels using the \u003cstrong\u003e1756-OB32\u003c\/strong\u003e, engineers must factor in thermal derating when ambient temperatures reach 60°C. Operating all 32 channels simultaneously near the 0.35A limit requires adequate enclosure airflow or side-by-side spacing to prevent premature thermal stress on internal solid-state switching components.\u003c\/p\u003e\n\u003ch3\u003eDiagnostics, Troubleshooting, and Status Monitoring\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront-Panel LED Indicators\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated individual channel LEDs provide immediate visual confirmation of controller output commands versus actual load status.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfigurable Fault and Program States\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSupports customizable per-point behaviors in Fault and Program modes, offering options to \u003cstrong\u003eHold Last State, turn On, or turn Off\u003c\/strong\u003e depending on safety requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eLogistics, Warranty, and Fulfillment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpress International Freight\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eRapid worldwide dispatch secured via \u003cstrong\u003eFedEx\u003c\/strong\u003e, \u003cstrong\u003eUPS\u003c\/strong\u003e, and \u003cstrong\u003eDHL\u003c\/strong\u003e within \u003cstrong\u003e24-48 hours\u003c\/strong\u003e from order clearance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Factory Warranty\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eBacked by a full \u003cstrong\u003e12-month warranty\u003c\/strong\u003e ensuring total operational dependability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackaging Standards\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eDelivered in sealed industrial anti-static packaging to protect sensitive circuitry during transit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTarget Applications and Supported Equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-density industrial machinery automation requiring compact discrete output blocks.\u003c\/li\u003e\n\u003cli\u003eProcess control valve actuation banks and indicator annunciation panels.\u003c\/li\u003e\n\u003cli\u003eAutomated material handling systems utilizing \u003cstrong\u003eControlLogix\u003c\/strong\u003e remote I\/O drops.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProfessional Frequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat specific external fusing is recommended for protecting the 1756-OB32 output channels?\u003c\/strong\u003e\n\u003cp\u003eThe manufacturer recommends using 5x20mm 800 mA fast-acting fuses, such as Littelfuse p\/n SP001.1003 or Schurter p\/n 216.800, to safeguard connected field loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan the 1756-OB32 support sinking field input or output devices?\u003c\/strong\u003e\n\u003cp\u003eNo, this specific module is designed exclusively for \u003cstrong\u003esourcing output configurations\u003c\/strong\u003e, meaning it sources current out to the load; sinking configurations require an alternate module catalog number.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow does the module behave when the controller transitions to Program mode?\u003c\/strong\u003e\n\u003cp\u003eYou can configure each point individually to either hold its last active state, force completely off, or force on depending on your application's safe state protocol.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat maintenance benefit do the compatible 1756-TBCH and 1756-TBS6H terminal blocks offer?\u003c\/strong\u003e\n\u003cp\u003eThey allow technicians to unbolt and disconnect the entire terminal block assembly in one piece during hardware swaps, eliminating the need for tedious rewiring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat causes an unexpected overload condition on individual channels of the 1756-OB32?\u003c\/strong\u003e\n\u003cp\u003eOverloads usually stem from shorted field solenoids, excessive inductive kickback without adequate flyback diodes, or drawing more than 0.5A per point at 50°C.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":45013809889462,"sku":"1756-OB32","price":161.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/1756-OB32.jpg?v=1786521798","url":"https:\/\/www.plcsparehub.com\/products\/1756-ob32-allen-bradley-controllogix-dc-output-module-32-point-unit","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}