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1746-IV16

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Allen-Bradley 1746-IV16 is a 16-point digital DC input module for SLC programmable controller systems, supporting 24V DC sourcing input signals.
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Technical specifications for 1746-IV16

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1746-IV16
  • Product Family:
    SLC 500
  • Product Type:
    SLC 16 Point Digital Input Module
  • Voltage category:
    24V DC signal input (sourcing)
  • Number of inputs:
    16
  • Points per common:
    16
  • Voltage, operating:
    10...30V DC (sourcing)
  • Backplane current consumption 5V DC:
    0.085 A
  • Backplane current consumption 24V DC:
    0.0 A
  • Signal delay, max:
    On = 8 ms, Off = 8 ms
  • Off-state voltage, max:
    5.0V DC
  • Off-state current, max:
    1 mA
  • Input current:
    8 mA @ 24V DC, nom
  • Weight:
    0.24 kg
  • Estimated shipping dimensions:
    3.5x13x14.5cm
  • Tariff Code:
    8504402000
  • 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 Installation Use Cases Compatibility

Features:

  • Sixteen digital sourcing inputs support efficient monitoring of industrial switches and field sensing devices.
  • Fast 8 ms ON/OFF signal response improves input processing reliability in machine automation applications.
  • Low backplane current consumption reduces overall system power demand while maintaining stable operation.
Allen-Bradley 1746-IV16 is a digital DC input module used in SLC programmable controller systems for industrial signal acquisition and machine monitoring tasks. The module supports 16 sourcing input channels for connection to field sensors, switches, and control devices operating with 24V DC signals. Compact integration within the SLC chassis architecture allows efficient use of cabinet space while simplifying control system expansion. The module also supports reliable field signal monitoring in manufacturing and process automation applications.

The module operates with input voltages ranging from 10 to 30V DC and provides stable signal processing with 8 ms maximum ON and OFF response times. Allen-Bradley 1746-IV16 requires minimal backplane current while maintaining dependable digital input performance across all channels. Installation procedures are straightforward through chassis card guides and locking tabs that secure the module during operation. Unused chassis slots can also be protected using slot filler accessories to reduce debris accumulation inside the enclosure.

Allen-Bradley 1746-IV16 is commonly applied in packaging systems, material handling equipment, production machinery, and industrial process control systems requiring reliable discrete input monitoring. Compatibility with SLC communication modules, analog I/O cards, and EtherNet/IP adapters allows gradual modernization of installed automation systems. Continued support from Rockwell Automation further extends operational service life for legacy SLC platforms. Flexible integration capability makes the module suitable for both existing installations and replacement maintenance projects.

The 1746-IV16 Allen-Bradley SLC 16 Point Digital Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1746-IV16 SLC 16 Point Digital 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 1746-IV16 SLC 16 Point Digital Input Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1746-IV16
  • Condition New Original ready stock
  • Product Family 1746-ITV16,1746-IM16,1746-IN16
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.
  • Slide-in Slot Fixing: The module uses an SLC 500 standard DIN rail slot design, allowing it to slide directly into the rack and lock in place via the backplate connector, requiring no additional installation tools.
  • Removable Terminal Blocks: Equipped with 1746-RT28 removable terminal blocks, supporting wiring before plugging and unplugging, significantly simplifying on-site assembly and subsequent maintenance replacement processes.
  • High-Definition LED Indicators: The front panel integrates 16 independent green status indicator lights, clearly mapping the on/off status of each channel, facilitating point-to-point wiring debugging during installation.
  • Clear Front Labeling: The front of the module provides a writable white channel identification label, allowing installers to easily physically number and label each I/O circuit on-site.
  • Pneumatic system status feedback: Centrally collects 24V DC position limit signals from multiple sets of cylinder magnetic proximity switches on automated assembly lines.
  • Production line operator console integration: Used to connect to manual operation commands such as touch buttons, emergency stop switches, and selector switches on the operator panel, enabling human-machine interaction control.
  • Safety Light Curtain Signal Monitoring: Widely used in the protective circuits of high-risk equipment such as stamping and shearing machines, providing real-time reading of the closing status of safety light curtains and protective door limit switches.
  • Conventional Industrial Sensor Aggregation: Suitable for data aggregation from large quantities of digital sensors such as three-wire photoelectric switches and inductive proximity switches in small to medium-sized packaging and conveying systems.
  • 24V DC Sourcing Input: Specifically designed to receive 24V DC sourcing signals, perfectly compatible with various sinking output field sensors and switches.
  • Universal for all SLC rack types: Can be directly inserted into any SLC 500 base rack size, such as 1746-A4, A7, and A13, without being limited by the physical location of the slot.
  • Multi-generation processor compatibility: Perfectly compatible with controllers from the early SLC 5/01 to the later SLC 5/05, maintaining high consistency in underlying physical addressing and data scanning.
  • Network expansion module compatibility: Supports seamless expansion in distributed network architectures via remote I/O and Ethernet adapter cards such as 1747-ASB and 1747-AENT.
Description
Allen-Bradley 1746-IV16 is a digital input module developed for SLC programmable controller platforms requiring dependable 24V DC signal monitoring. The module provides 16 sourcing digital input channels grouped under a single common connection, allowing efficient connection of industrial switches, sensors, and field devices. Its compact chassis-based structure supports flexible control system expansion within SLC automation architectures.

The module operates with a voltage range of 10 to 30V DC sourcing input signals and supports nominal input current of 8 mA at 24V DC. Allen-Bradley 1746-IV16 features maximum signal delays of 8 ms for both ON and OFF transitions, helping provide stable input detection during machine operation. Off-state voltage is limited to 5.0V DC maximum with off-state current up to 1 mA, improving signal integrity and minimizing false input conditions in industrial environments.

Backplane power requirements remain low, with Allen-Bradley 1746-IV16 consuming 0.085 A from the 5V DC backplane while requiring no current from the 24V DC backplane supply. The module integrates directly into SLC chassis assemblies using self-locking tabs and card guide alignment for secure installation. During maintenance or replacement, the module can be removed by pressing the locking tabs and sliding the unit out of the chassis slot.

Allen-Bradley 1746-IV16 supports a broad range of SLC system expansion options including communication modules, replacement chassis, analog I/O cards, and EtherNet/IP adapters such as the 1747-AENTR. This flexibility allows existing SLC systems to be modernized into distributed I/O architectures while maintaining compatibility with installed field devices. Continued lifecycle support from Rockwell Automation also helps extend long-term usability in industrial control applications.
Revisions

Revision Part #

Also known as

1746-IV16 Ser A
1746-IV16/A, Series A, Rev A
1746-IV16 Ser B
1746-IV16/B, Series B, Rev B
1746-IV16 Ser C
1746-IV16/C, Series C, Rev C
1746-IV16 Ser D
1746-IV16/D, Series D, Rev D
Alternative Names
1746-1V16 1746-IVI6 17461V16 1746IV16 1746-IA4 1746-IA8 1746-IA16 1746-IB8
Technical notes
Engineered for reliable machine monitoring, the Allen-Bradley 1746-IV16 16-point input module utilizes a removable terminal block to eliminate rewiring errors during field maintenance.
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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 type of input signals does Allen-Bradley 1746-IV16 support?
Allen-Bradley 1746-IV16 supports 24V DC sourcing digital input signals for industrial sensing and switching applications.
How many input channels are available on Allen-Bradley 1746-IV16?
Allen-Bradley 1746-IV16 provides 16 digital input channels with 16 points per common connection.
Why does Allen-Bradley 1746-IV16 use sourcing input configuration?
Sourcing input configuration allows Allen-Bradley 1746-IV16 to interface with compatible sinking field devices commonly used in industrial automation systems.
How fast does Allen-Bradley 1746-IV16 respond to input signal changes?
Allen-Bradley 1746-IV16 supports maximum ON and OFF signal delays of 8 milliseconds.

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