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        1761-L32BBB

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Allen-Bradley 1761-L32BBB is a 24 V DC MicroLogix 1000 controller with twenty DC inputs, ten sourcing MOSFET outputs, and two relay outputs.
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        Ships by Wednesday, October 28
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
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        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
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        Technical specifications for 1761-L32BBB

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1761-L32BBB
        • Product Family:
          MicroLogix
        • Product Type:
          MicroLogix 1000 32-Point Controller
        • Stock:
          1
        • Controller supply:
          20.4…26.4 V DC
        • User memory:
          1 K EEPROM
        • Digital inputs:
          20 at 24 V DC
        • MOSFET outputs:
          10 sourcing
        • Relay outputs:
          2
        • Input operating range:
          14…30 V DC
        • Communication:
          DF1 through RS-232
        • MOSFET current per common:
          6 A
        • Operating temperature:
          0…55 °C horizontal; 0…40 °C vertical
        • Enclosure:
          Open-style
        • Weight:
          0.34 kg
        • Estimated shipping dimensions:
          20x4x8cm
        • Tariff Code:
          8537101190
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen,Fujian,China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals DC Input Topology Mixed Output Duties Serial Recovery Product Applications

        Features:

        • Fixed I/O: twenty 24 V DC inputs in one 32-point controller
        • Mixed outputs: ten sourcing MOSFET channels plus two relay contacts
        • DC platform: 24 V DC supply with DF1 communication and 1 K EEPROM
        1761-L32BBB addresses compact machines that need more solid-state source outputs than relay channels.

        Its input commons can be wired for the documented sinking or sourcing arrangement, while the two output technologies retain different load and protection rules.

        Procurement should preserve the full suffix because adjacent 1761-L32 variants change field voltage, output type, and controller power.

        Apter Power can coordinate official-document review, quotation, and sourcing support for 1761-L32BBB.
        Allen-Bradley 1761-L32BBB MicroLogix 1000 32-Point Controller Manuals, Datasheets, Links
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Common arrangement: select the official sinking or sourcing configuration before transferring the terminal schedule.
        • Signal window: keep field devices inside the documented on-state, off-state, current, and temperature-derated limits.
        • Noise control: separate sensor wiring from switched loads and bond the controller chassis ground before commissioning.
        • MOSFET bank: use the ten sourcing points only with correctly polarized qualified DC loads.
        • Relay pair: apply the manufacturer contact ratings and suppression to the two relay-controlled circuits.
        • Common loading: total simultaneous current by common instead of approving each point in isolation.
        • Program archive: preserve the validated application and data before removing an operating controller.
        • DF1 path: record baud rate, parity, node, error detection, and cable arrangement used by the installed system.
        • Acceptance test: prove input transitions and both output technologies under representative loads after download.
        • Compact machine control: process 24 V DC sensors and command qualified source-output loads.
        • Mixed-load panels: combine fast DC actuation with two separately rated relay circuits.
        • Legacy MicroLogix service: restore a validated fixed-I/O program through the documented DF1 interface.
        Description
        1761-L32BBB is the 32-point MicroLogix 1000 configuration built around a 24 V DC controller supply. Its embedded field interface combines twenty 24 V DC inputs with ten sourcing MOSFET outputs and two relay outputs, creating a mixed solid-state and contact-output layout in one fixed controller.

        Fast DC switching is the practical focus of 1761-L32BBB: the MOSFET bank handles qualified source-output loads while the two relay points serve separately rated circuits. The DF1 serial channel provides the documented programming and device-communication path, and the 1 K EEPROM retains the controller application.

        For equipment records, 1761-L32BBB should remain tied to its DC supply and mixed-output catalog suffix rather than a generic 32-point MicroLogix 1000 label. That distinction preserves the intended fixed I/O architecture when the controller is identified for service.
        Alternative Names
        Allen-Bradley 1761-L32BBB Rockwell Automation 1761-L32BBB AB 1761 L32BBB 1761L32BBB controller MicroLogix 1000 32-point DC controller 1761 L32 BBB PLC
        Technical notes
        During a 1761-L32BBB output-circuit replacement, do not treat the ten sourcing MOSFET points as equivalent to the two relay contacts. Trace the affected common, match load polarity to the sourcing bank, and apply the documented contact rating or suppression method before energizing the rebuilt circuit.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Why can 1761-L32BBB show input voltage yet leave the corresponding bit off?
        Measure the voltage at the input and its common under load, then check whether the field device and common match the selected sinking or sourcing diagram and the official on-state threshold.
        How should 1761-L32BBB MOSFET and relay outputs be separated during a retrofit?
        Map the ten sourcing points and two relay points independently, retain their common groups, verify load polarity and contact ratings, and apply suppression appropriate to each actuator.
        What can cause a sourced DC load on 1761-L32BBB to remain de-energized after the logic turns on?
        Confirm the load return, output common, field supply, point assignment, and current limit with a meter; do not treat the relay wiring pattern as interchangeable with the MOSFET bank.
        What should maintenance save before replacing 1761-L32BBB during a short outage?
        Archive the program and data, DF1 settings, controller series, input-common polarity, output schedule, supply measurements, and a functional test record before the outage begins.
        Can 1761-L32BBB replace an AC-powered 32-point MicroLogix 1000 without panel changes?
        No. Compare the complete catalog suffix, controller supply, input voltage class, output technology, commons, and program I/O map; an AC variant requires different field circuits.
        How should 1761-L32BBB be tested after an inductive load fault?
        Inspect suppression and wiring first, isolate the affected output group, verify controller status, and then test each MOSFET or relay point with a controlled load before restoring production power.

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