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        AB 1746-NI16I
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        • Lifecycle status

          Discontinued
          Discontinued date: 2024-09-30

        1746-NI16I

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        1001 reviews ｜ Need a Specific Revision?
        1746-NI16I is an Allen-Bradley 16-channel analog current input module used for SLC 500 chassis applications that acquire multiple analog current signals from industrial transmitters.
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        Ships by Thursday, October 29
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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.
        Shipping Mode
        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.
        Parts Availability
        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
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 1746-NI16I

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1746-NI16I
        • Product Family:
          SLC 500
        • Product Type:
          16-channel analog current input module
        • Stock:
          1
        • Input channels:
          16 backplane-isolated current inputs
        • Selectable input ranges:
          0–20 mA, 4–20 mA, ±20 mA and 0–1 mA
        • A/D conversion:
          Sigma-delta
        • Input filtering:
          Programmable low-pass digital filter; 6, 10, 20, 40, 60, 80, 100 or 250 Hz
        • Input impedance:
          249 Ω
        • Maximum current input:
          ±30 mA between analog common and any input terminal
        • Open-circuit detection:
          Less than 5 seconds
        • Input resolution:
          640 nA
        • Calibrated accuracy at 25 °C:
          Better than 0.15% of range
        • Isolation:
          500 V AC for 1 second
        • Backplane current:
          125 mA at 5 V DC and 75 mA at 24 V DC
        • Backplane power:
          2.425 W maximum
        • Chassis location:
          Any SLC 500 I/O slot except slot 0
        • Operating temperature:
          0–60 °C
        • Storage temperature:
          −40 to 85 °C
        • Relative humidity:
          5–95%, noncondensing
        • Tariff Code:
          9031900090
        • 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 Wiring Configuration Diagnostics Application
        • Sixteen single-ended current inputs in one SLC 500 I/O slot
        • Selectable 0–20 mA, 4–20 mA, ±20 mA and 0–1 mA input ranges
        • Class 1 or Class 3 operation with programmable channel filtering and diagnostics

        1746-NI16I converts sixteen field-current signals for retrieval by fixed or modular SLC 500 processors.

        Class 3 operation provides the full 32-input-word and 32-output-word data structure, while Class 1 supports processors and remote-I/O paths that cannot use Class 3.

        Connect both analog common terminals as documented, ground shields at the chassis mounting screws, tie unused channels to analog common, and select the input range and filter for each active channel.

        Availability, condition, price, and shipping time for 1746-NI16I are confirmed during quotation.

        Allen-Bradley 1746-NI16I 16-channel analog current input module 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.

        • Uses two analog common terminals internally connected across all sixteen current inputs.
        • Requires shield drain wires to be connected to chassis mounting screws.
        • Requires external transmitter loop power matched to the transmitter specification.
        • Supports Class 1 and Class 3 operation, with Class 3 recommended where the processor and chassis support it.
        • Offers engineering units, scaled-for-PID and proportional-count data formats.
        • Provides eight selectable digital-filter frequencies for balancing response and noise rejection.
        • Uses five green indicators: one per four-channel group and one module-status indicator.
        • Detects a current-input open circuit in less than five seconds.
        • Provides module-status and channel diagnostic information through the SLC data image.
        • Acquiring 4–20 mA process transmitters in SLC 500 systems
        • Monitoring 0–20 mA industrial current signals
        • Reading low-current 0–1 mA instrumentation inputs
        Description
        1746-NI16I uses sixteen single-ended current-input channels with two internally connected analog-common terminals. The module receives field-current signals but does not provide loop power to connected transmitters.

        Each transmitter requires an external Class 2 supply matched to its electrical requirements. Cable shields connect to the chassis mounting screws, unused inputs connect to analog common, and installations using individual shielded cables may require interposing terminal blocks for the common conductors.

        When replacing 1746-NI16I, preserve the removable-terminal wiring, shared-common arrangement, external loop supplies, channel ranges, digital-filter settings and controller data format. Revalidate open-circuit detection and every configured channel before returning the SLC 500 system to operation.
        Alternative Names
        1746-NI16I 1746 NI16I Allen-Bradley 1746-NI16I Allen Bradley 1746-NI16I Rockwell Automation 1746-NI16I SLC 500 1746-NI16I
        Technical notes
        1746-NI16I requires an SLC 500 I/O slot other than slot 0, adequate backplane power, external loop power and matching current-input configuration; 1746-NI16V is not a direct substitute.
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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
        Which SLC 500 chassis positions can accept 1746-NI16I?
        Install it in any SLC 500 I/O module slot except slot 0, after confirming the chassis backplane has sufficient 5 V DC and 24 V DC capacity.
        Does 1746-NI16I provide transmitter loop power?
        No. The official wiring instructions require an external DC supply matched to the current transmitter, and a second supply may be used when all supplies are Class 2.
        How should unused channels on 1746-NI16I be terminated?
        Connect unused current inputs to the analog common terminals at 0 V as shown in the official wiring notes, while preserving the module's common-terminal arrangement.
        How should the input filter for 1746-NI16I be selected?
        Choose a programmable filter frequency that balances noise rejection and module update time for the process; do not copy a setting without checking the signal dynamics.
        Which 1746-NI16I data format should be chosen for an existing SLC program?
        Match the channel configuration to the program's expected engineering units, scaled-for-PID or proportional-count format before enabling the input data.
        Can 1746-NI16V replace 1746-NI16I?
        No direct substitution is established: 1746-NI16V is the voltage-input version, while 1746-NI16I is for current inputs, so wiring and channel configuration differ.
        What should be investigated when 1746-NI16I reports an open circuit?
        Check the external loop supply, transmitter wiring, analog common, removable terminal block seating and channel configuration; the module's open-circuit detection time is under five seconds.

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