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        1746-OB16E
        1746-OB16E
        1746-OB16E
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        1746-OB16E
        1746-OB16E
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        • Lifecycle status

          Discontinued / Obsolete by OEM
          For 1746-OB16E, Apter Power coordinates quotations, product manuals, SLC 500 selection, and model matching.

        1746-OB16E

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        1001 reviews ｜ Need a Specific Revision?
        Allen-Bradley 1746-OB16E is a 16-point SLC 500 electronically protected DC sourcing output module that switches 10–30 V DC field loads from controller commands.
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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.
        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-OB16E

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1746-OB16E
        • Product Family:
          SLC 500
        • Product Type:
          SLC 500 16-Point Electronically Protected DC Sourcing Output Module
        • Stock:
          1
        • Output type:
          DC sourcing
        • Output points:
          16
        • Points per common:
          16
        • Operating voltage:
          10...30 V DC
        • Off-state leakage:
          1 mA maximum
        • On-state voltage drop:
          1.0 V maximum at 0.5 A
        • Signal delay, on:
          1.0 ms maximum
        • Signal delay, off:
          1.0 ms maximum
        • Current per point:
          1.0 A at 30 °C; 0.5 A at 60 °C
        • Current per module:
          8 A maximum at 0...60 °C
        • Surge current per point:
          2 A for 10 ms
        • Surge current per module:
          32 A for 10 ms
        • Backplane current:
          0.135 A at 5 V DC
        • Electronic protection:
          Thermal cutout with automatic reset
        • Configuration ID code:
          2920
        • Field termination:
          Removable terminal block
        • Voltage category:
          24 V DC signal output
        • Minimum load current:
          1 mA
        • Backplane current at 24 V DC:
          0 A
        • Surge repeatability at 30 °C:
          Once every 1 s
        • Surge repeatability at 60 °C:
          Once every 2 s
        • Leakage-load resistor at 24 V:
          5 kΩ, 0.5 W
        • Protection limitation:
          Does not protect against reverse polarity
        • Weight:
          0.5512 lbs (0.25 kg)
        • Estimated shipping dimensions:
          3.5x13x14.5cm
        • Tariff Code:
          8537101190
        • Country of origin:
          Malaysia
        • 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 Fault Behavior Current Budget Field Wiring SLC Setup

        Features:

        • Sixteen sourcing outputs share one common in the SLC 500 I/O structure.
        • A thermal cutout and automatic reset operate independently on an affected point.
        • The removable terminal block separates field wiring from the chassis connection.
        Controller output bits command the sixteen channels of 1746-OB16E, while the field supply provides the energy switched to the connected loads.

        The module logic draws from the 5 V SLC 500 backplane, so chassis loading and field-load current are evaluated as separate circuits.

        Configuration ID 2920 identifies the catalog number to the SLC 500 programming environment without assigning an unverified hardware revision.

        The Allen-Bradley 1746-OB16E SLC 500 16-Point Electronically Protected DC Sourcing Output Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Allen-Bradley 1746-OB16E SLC 500 16-Point Electronically Protected DC Sourcing Output 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.

        Channel protection response

        • Affected point: a short circuit or overload drives the channel into thermal current limiting.
        • Other outputs: unaffected points continue to respond to their controller image bits.
        • Automatic reset: the protected path can recover after temperature and load conditions return to range.
        • External protection: the electronic cutout does not replace branch protection or correct reversed polarity.

        Applying point and module limits

        • Point loading: each channel is sized against the ambient-temperature current limit.
        • Combined demand: the sixteen active loads must remain inside the module-wide current ceiling.
        • Starting current: inrush is checked against both the per-point and whole-module surge windows.
        • Voltage margin: the on-state drop is included when confirming the load receives adequate field voltage.

        Sourcing-output connections

        • Shared common: all sixteen field outputs use the common assigned to this module.
        • Supply polarity: the 10–30 V DC source must be connected for a sourcing arrangement.
        • Terminal boundary: field conductors land on the removable block rather than the chassis backplane.
        • Inductive loads: external suppression is applied where the connected device produces switching transients.

        Chassis and program identification

        • Module identity: ID code 2920 selects the installed catalog number in the SLC 500 configuration.
        • Image mapping: each programmed output bit corresponds to one field terminal.
        • Backplane allocation: the chassis supply budget includes the module's 5 V logic demand.
        • Catalog control: the complete 1746-OB16E designation is retained without inventing a Series or Revision.
        Description
        Allen-Bradley 1746-OB16E is an SLC 500 sixteen-point electronically protected DC sourcing output module. It converts the controller output image into switched 10–30 V DC paths for field loads while the chassis backplane supplies the module logic.

        When an output on 1746-OB16E is overloaded or shorted, its thermal cutout limits that point and the automatic-reset circuit can restore the path after the fault clears. The remaining channels continue to follow their controller commands, although external branch protection is still required for the field circuit.

        All sixteen points on 1746-OB16E share one common and terminate at a removable block, so the field-supply polarity and common conductor must match the sourcing arrangement. The separate 5 V backplane demand belongs to the module electronics rather than the connected loads.

        In the SLC 500 configuration, 1746-OB16E uses ID code 2920 and applies the same one-millisecond maximum turn-on and turn-off delay to its commanded outputs.
        Revisions

        Revision Part #

        Also known as

        1746-OB16E Ser A
        1746-OB16E/A, Series A, Rev A
        Get Parts Quote
        1746-OB16E Ser B
        1746-OB16E/B, Series B, Rev B
        Get Parts Quote
        Alternative Names
        1746OB16E 1746 OB16E 1746-OB16-E Allen-Bradley 1746-OB16E AB 1746-OB16E SLC 500 1746-OB16E 1746-OB16E DC Output Module 1746-0B16E
        Technical notes
        Allen-Bradley 1746-OB16E is the SLC 500 sourcing-output catalog number with sixteen points, one common, electronic cutout and automatic reset.
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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 an Allen-Bradley 1746-OB16E still need external branch protection if its outputs are electronically protected?
        The electronic cutout in Allen-Bradley 1746-OB16E limits an overloaded channel, but it does not protect against reverse polarity or replace field-circuit branch protection.
        What current should be used when checking a hot-cabinet load on 1746-OB16E?
        At 60 °C, 1746-OB16E is limited to 0.5 A per point; the 1.0 A point rating applies at 30 °C, and the module total remains limited to 8 A.
        If the SLC 500 output bit is on but the field device is off, what should be checked around 1746-OB16E?
        For 1746-OB16E, verify the 10–30 V DC field supply, sourcing polarity, shared common, terminal connection, and whether the channel protection has operated.
        Does one shorted load stop every output on Allen-Bradley 1746-OB16E?
        No. Allen-Bradley 1746-OB16E applies its thermal cutout to the affected point, while channels without the fault continue to follow their controller commands.
        Which SLC 500 configuration identity belongs to the complete 1746-OB16E catalog number?
        Use configuration ID code 2920 for 1746-OB16E; do not assign a Series or Revision unless the product marking provides one.
        How should inrush be evaluated before connecting a solenoid or contactor to 1746-OB16E?
        Compare the load inrush with the 1746-OB16E limits of 2 A for 10 ms per point and 32 A for 10 ms across the module, then add the required external suppression.

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