Allen-Bradley 1769-L23-QBFC1B
Allen-Bradley 1769-L23-QBFC1B
Allen-Bradley 1769-L23-QBFC1B
Allen-Bradley 1769-L23-QBFC1B
Allen-Bradley 1769-L23-QBFC1B
Allen-Bradley 1769-L23-QBFC1B
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  • Lifecycle Status

    Discontinued / Obsolete by OEM
    Maintain your machine control efficiency with this original Allen-Bradley 1769-L23-QBFC1B controller, sourced by Apter Power to keep your legacy systems operating reliably.

1769-L23-QBFC1B

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Allen-Bradley 1769-L23-QBFC1B is a CompactLogix packaged controller integrating digital I/O, analog I/O, high-speed counters, and serial communication in a compact programmable automation platform.
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Technical specifications for 1769-L23-QBFC1B

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1769-L23-QBFC1B
  • Product Family:
    CompactLogix
  • Product Type:
    CompactLogix 512KB DI/O AI/O Controller
  • Stock:
    3
  • User memory:
    512 KB
  • Optional nonvolatile memory:
    None
  • Number of expansion I/O modules, max:
    2 (limited by current draw of module)
  • Replacement battery:
    1769-BA
  • Current draw @ 5V DC:
    800 mA
  • Current draw @ 24V DC:
    600 mA
  • Power dissipation:
    10.73 W
  • Isolation voltage:
    30V (continuous), basic insulation type
  • Slot width:
    1
  • Module location:
    DIN rail or panel mount
  • Mounting screw torque:
    1.1…1.8 N•m (10…16 lb•in) - use M4 or #8 screws
  • Inputs:
    16 (8 points/group)
  • Voltage category:
    24V DC sink/source
  • Off-state voltage, max:
    5V DC
  • Off-state current, max:
    1.5 mA
  • On-state current, min:
    2 mA @ 10V DC
  • Inrush current, max:
    250 mA
  • Input impedance, max:
    3 kΩ
  • Cyclic update time:
    100 µs…750 ms
  • Temperature, operating:
    0…60 °C (32…140 °F)
  • Temperature, storage:
    -40…+85 °C (-40…+185 °F)
  • Temperature, surrounding air, max:
    60 °C (140 °F)
  • Relative humidity:
    5…95% noncondensing
  • Vibration:
    5 g @ 10…500 Hz
  • Shock, operating:
    20 g - DIN rail, 30 g - Panel
  • Shock, nonoperating:
    30 g - DIN rail, 40 g - Panel
  • Weight:
    1.65 kg
  • Estimated shipping dimensions:
    34x17.5x14.2cm
  • Tariff Code:
    2208200090
  • 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 Specifications Monitoring Security Use Cases

Features:

  • Integrated 42-channel embedded I/O architecture reduces external module requirements and simplifies machine control installation.
  • Dual RS-232 communication ports support DF1, DH-485, and ASCII protocols for flexible industrial serial networking.
  • Compact programmable automation controller design combines processing, power supply, and high-speed counters within a single assembly.
Allen-Bradley 1769-L23-QBFC1B is a CompactLogix packaged controller developed for industrial automation applications requiring integrated control and embedded I/O functionality. The controller combines processor, communication, digital inputs, digital outputs, analog channels, and high-speed counters into a single compact platform. Machine builders and industrial users benefit from reduced cabinet space requirements and simplified wiring structures. The integrated architecture also helps streamline installation and commissioning procedures.

The controller includes 512 KB user memory together with dual RS-232 serial communication ports supporting DF1, DH-485, and ASCII protocols. Allen-Bradley 1769-L23-QBFC1B supports multiple programming languages including ladder diagram, function block, structured text, and sequential function chart. Embedded analog and digital channels allow direct connection of field devices such as sensors, switches, actuators, and transmitters. Additional expansion capability is available through support for up to two 1769 Compact I/O modules.

Allen-Bradley 1769-L23-QBFC1B is suitable for compact machine automation, material handling systems, packaging equipment, and standalone industrial process control applications. The controller supports DIN rail or panel mounting and operates from a nominal 24 Volt DC power source. Industrial durability is supported through wide operating temperature capability, vibration resistance, and noncondensing humidity tolerance. LED diagnostic indicators further improve operational visibility by providing status monitoring for communication, network activity, power supply condition, analog channels, and digital I/O operation.

The 1769-L23-QBFC1B Allen-Bradley CompactLogix 512KB DI/O AI/O Controller may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1769-L23-QBFC1B CompactLogix 512KB DI/O AI/O Controller Manuals,Datasheets,Link 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.
Allen-Bradley 1769-L23-QBFC1B CompactLogix 512KB DI/O AI/O Controller Specs

General

  • Manufacturer Allen-Bradley
  • Model 1769-L23-QBFC1B
  • Condition New Original ready stock
  • Product Family 1769-L23E-QB1B,1769-L23E-QBFC1B,1769-L23-QBFC1B/A
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.
  • I/O Status Monitoring: Real-time tracking of LED status indicators for 16 digital inputs and 16 digital outputs.
  • Analog Data Acquisition: Acquires current/voltage analog inputs from 4 channels for precise process parameter monitoring.
  • High-Speed ​​Counter Tracking: Monitors pulse inputs from 2 high-speed counters (HSCs) for accurate frequency and position tracking.
  • System Health Diagnosis: Monitors controller CPU load, memory consumption, and battery/power supply status to ensure stable system operation.
  • Application Password Protection: Provides multi-level user access control to prevent unauthorized program reading or modification.
  • Physical Mode Switch: Equipped with a keyswitch (RUN/REM/PROG) to prevent accidental operation in the field.
  • Data Power Loss Protection: Built-in non-volatile flash memory automatically backs up critical data and operating variables during power outages.
  • Industrial Environment Compliance: Certified by multiple international safety standards including c-UL-us and CE, possessing extremely high resistance to electromagnetic interference.
  • Small Packaging Machinery: Controls conveyor belt speed, working with a high-speed counter to achieve precise material counting and sealing control.
  • Pump Station Variable Frequency Control: Utilizes analog input/output to adjust pump speed, achieving constant pressure water supply or wastewater treatment monitoring.
  • Automated Assembly Line: Suitable for small automated workstations of approximately 20 points, performing cylinder action control and sensor signal acquisition.
  • Distributed Material Handling: Acts as a network slave station, responsible for local material sorting, redirection, and data aggregation from field instruments.
Description
Allen-Bradley 1769-L23-QBFC1B operates as a CompactLogix packaged controller designed for industrial automation systems requiring integrated control, communication, and embedded I/O functionality. The controller combines processor, power supply, digital inputs, digital outputs, analog channels, and high-speed counters within a compact assembly, reducing panel space requirements while simplifying installation. The unit functions as a complete programmable automation controller suitable for standalone machine control and distributed industrial applications.

The controller provides 512 KB user memory and supports programming through ladder diagram, function block, structured text, and sequential function chart languages. Allen-Bradley 1769-L23-QBFC1B includes two RS-232 serial communication ports supporting DF1, DH-485, and ASCII protocols with transmission speeds up to 38.4 Kbps. One serial channel is fully isolated while the second channel operates as a non-isolated communication interface. For reliable serial communication, connected cable length should remain within 50 feet.

Embedded I/O capability is one of the primary advantages of Allen-Bradley 1769-L23-QBFC1B. The controller includes 42 total channels consisting of 16 digital inputs, 16 digital outputs, 4 analog inputs, 2 analog outputs, and 4 high-speed counters. Analog channels support differential or single-ended signal configurations with input ranges including ±10 Volts, 0 to 5.25 Volts, and 0 to 21 mA. Output ranges include 24 Volts DC, ±10.4 Volts, and 0 to 21 mA, supporting flexible integration with industrial field devices and instrumentation.

Allen-Bradley 1769-L23-QBFC1B supports expansion through installation of up to two additional 1769 Compact I/O modules, limited by system current draw. The embedded power supply operates from nominal 24 Volts DC and delivers current to the backplane for controller operation. Current consumption reaches 800 mA at 5V DC and 600 mA at 24V DC, while power dissipation is rated at 10.73 W. The controller also supports user-replaceable battery backup through the 1769-BA battery assembly.

Industrial durability is supported through operating temperatures from 0°C to 60°C and storage temperatures from -40°C to +85°C. Allen-Bradley 1769-L23-QBFC1B tolerates noncondensing humidity levels between 5% and 95% together with vibration resistance up to 5 g at 10…500 Hz. The controller can be mounted on DIN rails or panels and uses copper wiring with insulation ratings of 75 °C or higher for both power and I/O connections. LED indicators provide status monitoring for power, communication ports, network activity, analog channels, digital I/O, and high-speed counter operation.
Revisions

Revision Part #

Also known as

1769-L23-QBFC1B Ser A
1769-L23-QBFC1B/A, Series A, Rev A
Alternative Names
1769-L23-Q8FC18 1769-L23-Q8FC1B 1769L23Q8FC18 1769L23Q8FC1B 1769-L23E-QB1B 1769-L23E-QBFC1B 1769-L31 1769-L32C 1769-L35CR
Technical notes
Designed for precise machine control, the Allen-Bradley 1769-L23-QBFC1B leverages 512KB of user memory and 2 high-speed counters to execute high-performance logic and motion tracking seamlessly.
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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.
How many I/O channels are available on Allen-Bradley 1769-L23-QBFC1B?
The controller includes 42 total channels consisting of 16 digital inputs, 16 digital outputs, 4 analog inputs, 2 analog outputs, and 4 high-speed counters.
Why does Allen-Bradley 1769-L23-QBFC1B support multiple programming languages?
Support for ladder diagram, structured text, function block, and sequential function chart programming allows flexible application development for different automation requirements.
How does Allen-Bradley 1769-L23-QBFC1B handle serial communication?
Allen-Bradley 1769-L23-QBFC1B provides two RS-232 ports supporting DF1, DH-485, and ASCII protocols with communication speeds up to 38.4 Kbps.
Can Allen-Bradley 1769-L23-QBFC1B support additional Compact I/O expansion modules?
The controller supports installation of up to two additional 1769 Compact I/O expansion modules depending on system current limitations.

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