Allen-Bradley 1791-16B0
Allen-Bradley 1791-16B0
Allen-Bradley 1791-16B0
Allen-Bradley 1791-16B0
Allen-Bradley 1791-16B0
Allen-Bradley 1791-16B0
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1791-16B0

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The Allen Bradley 1791-16B0 is a 6-input DC block I/O module, part of the acclaimed 1791 block I/O series, designed as a dedicated input module for industrial automation environments.
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Technical specifications for 1791-16B0

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1791-16B0
  • Product Family:
    1791 Block I/O
  • On State Voltage Range:
    10-30 V DC
  • Inputs per Block:
    16 - 2 groups of 8
  • On State Current Maximum:
    11 mA
  • On State Current Minimum:
    2.5 mA
  • Off-State Voltage Maximum:
    5 V DC
  • Input Impedance:
    3.4 K Ohms
  • Power Dissipation:
    11.1 Watts
  • Thermal Dissipation:
    38 BTU/hr
  • Weight:
    0.52 kg
  • Estimated shipping dimensions:
    17.8x8.3x9.8cm
  • 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 Specifications Applications Diagnostics & Protection Communication & Connectivity

Features:

  • Interface Between DC Input Signals and PLC Control Systems
  • Combines Capability of Signal Conditioning with Multi-Channel Input Support
  • Operates in Conjunction with the 1791 Block I/O Series and Standard PLC Platforms
The Allen-Bradley 1791-16B0 operates as a 16-Channel DC Input Block I/O Module in industrial automation systems, providing reliable digital input processing for control applications. It continuously accepts incoming DC signals (10-30 VDC) across 16 organized input points arranged in two groups of eight, and converts these signals into logic-level data for transmission to the host controller. Seamless integration is standard with the 1791-16B0, with its grouped input configuration allowing flexible wiring schemes and efficient signal management in distributed I/O architectures. The 1791-16B0 has made improvements in several areas over previous input module designs in addition to incorporating wide-range input voltage capability within the 1791 series.

The 1791-16B0 provides essential input functions common to the entire Block I/O system, and is a critical component of the control path, directly affecting the proper, normal operation of the overall automation system. One 1791-16B0 module is required per input location depending on the desired channel count. The 1791-16B0 occupies a compact form factor in the control enclosure and is designed for direct field mounting in industrial environments.

For expanded input applications, the 1791 System allows multiple 1791-16B0 modules to be distributed across the communication network. In addition to standard single module operation, the distributed configuration also performs automatic status indication. The 1791-16B0 input monitoring executes state detection using the internal circuitry specified in the module specifications. Using this method, the input system continually monitors the status of all 16 channels. If the system detects that an input channel is active (within configured on-state current levels of 2.5-11 mA), it will automatically update the input image table and provide visual indication through the status LEDs.

The 1791-16B0 Allen-Bradley Block I/O DC Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1791-16B0 Block I/O DC Input Module 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 1791-16B0 Block I/O DC Input Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1791-16B0
  • Condition New Original ready stock
  • Product Family 1791-16V0,1791-8B8P
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.
  • Device Compatibility: It monitors discrete signals from industrial field devices such as pushbuttons, selector switches, float switches, limit switches, and proximity sensors.
  • Distributed Control: Ideal for applications with space limitations or those requiring highly distributed I/O blocks placed close to actuators and sensors.
  • System Integration: Commonly used in legacy industrial automation networks and compatible with PLC-2, PLC-3, PLC-5, and SLC controllers.
  • Status Monitoring: 16 front-panel status LEDs provide real-time visual feedback for each input channel, while dedicated Status and Communication LEDs indicate the module's overall health.
  • Internal Protection: Features surge suppression circuitry to handle voltage transients and ensure safe operation within industrial environments.
  • Physical Protection: Keyed removable terminal blocks prevent incorrect wiring insertion during installation or module replacement.
  • Thermal Management: Designed with power dissipation (11.1 watts) and thermal limits (38 BTU/hr) that require a 2.0-inch air gap on all sides for proper cooling.
  • Network Protocol: Primarily uses the Allen-Bradley Remote I/O link to communicate with a programmable controller or scanner.
  • Addressing: It appears as a 1/4 I/O rack to the processor, utilizing 2 words of input and output image table memory.
  • Daisy Chaining: Supports daisy-chaining on the Remote I/O link to connect multiple blocks to a single scanner.
  • Wiring: Connectivity is achieved through a removable terminal strip with captive screws, facilitating fast installation and reduced downtime during maintenance.
Description
The Allen Bradley 1791-16B0 is a 6 Input DC Block I/O Module that belongs to the esteemed 1791 Block I/O series, serving as a dedicated input module within industrial automation environments. This 1791-16B0 is specifically engineered to facilitate a wide input voltage range from 10 V to 30 V DC, enabling it to effectively manage up to 16 inputs organized into two distinct groups, each containing eight inputs. This dual-group configuration of the 1791-16B0 significantly enhances monitoring capabilities in complex automation systems, making it ideal for applications requiring precise input signal management.

The 1791-16B0 operates with exceptional efficiency, featuring an on-state current that ranges from a minimum of 2.5 mA to a maximum of 11 mA. To ensure minimal power consumption during non-active states, the 1791-16B0 maintains an off-state voltage limited to a maximum of 5 V DC. With an input impedance measuring at 3.4 K Ohms, the 1791-16B0 is meticulously tailored for a variety of input signal types, ensuring seamless compatibility with diverse sensors, switches, and field devices commonly found in manufacturing and process control applications.

In terms of energy management and thermal performance, the 1791-16B0 demonstrates robust engineering with a power dissipation rating of 11.1 watts and thermal dissipation measured at 38 BTU/hr, allowing for proper heat maintenance during continuous operation. The inputs of the 1791-16B0 are wired using 14 gauge wire, which provides adequate current capacity for reliable signal transmission across industrial distances. This 1791-16B0 input module is equipped with status LEDs to provide clear visual indications of operational states, enhancing user accessibility during monitoring, commissioning, and troubleshooting procedures. Designed to endure varied environmental conditions, the 1791-16B0 can operate reliably in temperatures ranging from 0 °C to 60 °C and can be stored between -40 °C and 85 °C. Its humidity tolerance, rated between 5% to 95% non-condensing, further extends the usability of the 1791-16B0 across different industrial settings, from factory floors to outdoor installations.
Revisions

Revision Part #

Also known as

1791-16B0 Ser A
1791-16B0/A, Series A, Rev A
1791-16B0 Ser B
1791-16B0/B, Series B, Rev B
Alternative Names
1791-1680 1791-16BO 1791-I6B0 17911680
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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.
What is the Allen-Bradley 1791-16B0 module used for?
The Allen-Bradley 1791-16B0 is a DC Block I/O input module designed for industrial automation systems, providing reliable input signal monitoring for sensors, switches, and other field devices.
What is the input capacity of the 1791-16B0?
The module supports up to 16 DC inputs, organized into two groups of eight inputs each, allowing efficient signal management in complex control systems.
What makes the 1791-16B0 suitable for industrial applications?
Its robust design, wide voltage range, efficient power management, and strong environmental tolerance make it ideal for demanding automation environments, including manufacturing and process control systems.