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        1756-OB16E

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        1001 reviews ｜ Need a Specific Revision?
        Allen-Bradley 1756-OB16E is a 16-point ControlLogix DC sourcing output module used to switch protected 12/24 V DC field loads.
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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.
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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 1756-OB16E

        • Manufacturer:
          Allen-Bradley
        • Part Number:
          1756-OB16E
        • Product Family:
          ControlLogix
        • Product Type:
          ControlLogix 16-Point Electronically Fused DC Output Module
        • Stock:
          1
        • Outputs:
          16 electronically fused; 8 points per group
        • Voltage Category:
          12/24 V DC source
        • Operating Voltage Range:
          10…31.2 V DC
        • Output Delay, Off to On:
          70 µs nominal; 1 ms maximum
        • Output Delay, On to Off:
          360 µs nominal; 1 ms maximum
        • Current Draw at 5.1 V DC:
          250 mA
        • Current Draw at 24 V DC:
          2 mA
        • Total Backplane Power:
          1.32 W
        • Thermal Dissipation:
          13.98 BTU/hr
        • Off-State Leakage Current:
          1 mA per point maximum
        • On-State Voltage Drop:
          400 mV DC at 1 A maximum
        • Current per Point:
          1 A maximum at 60 °C
        • Current per Module:
          8 A maximum at 60 °C
        • Operating Temperature:
          0…60 °C
        • Storage Temperature:
          -40…85 °C
        • Relative Humidity:
          5…95%, noncondensing
        • Vibration:
          2 g at 10…500 Hz
        • Dimensions:
          3.46 × 14.45 × 14.69 cm
        • Nonoperating Shock:
          50 g
        • Operating Shock:
          30 g
        • Weight:
          0.2 kg
        • 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 Fuse Protection Wiring Output Control Application
        • Provides 16 electronically fused 12/24 V DC sourcing outputs arranged as two groups of eight
        • Supports programmable Off, On, or hold-last-state behavior for Program and Fault modes
        • Uses a 20-pin 1756-TBNH or 1756-TBSH removable terminal block ordered separately

        Allen-Bradley 1756-OB16E is a Series A ControlLogix DC output module that provides protected switching for sixteen 10…31.2 V DC field circuits.

        The two-bank arrangement separates the outputs into groups 0 and 1, with electronic fusing per group, controller-visible output and fuse status, and continuous isolation between the banks and the backplane.

        For replacement, match the physical Series, Logix module definition, electronic keying, RTB and terminal schedule, field-power groups, load limits, surge suppression, and configured Program-mode and Fault-mode states.

        Availability, condition, price, and shipping time for Allen-Bradley 1756-OB16E are confirmed during quotation.

        Allen-Bradley 1756-OB16E 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.

        • Electronic fuse protection is applied per eight-point output group rather than independently at every output
        • Output and fuse status are reported to the Logix controller for program diagnostics
        • After a trip, remove the field fault and verify load current, polarity, wiring, and suppression before resetting the group
        • Use a separately ordered 20-pin 1756-TBNH or 1756-TBSH removable terminal block
        • Provide the documented DC positive and return connections for both eight-point field-power groups
        • Keep steady-state current, surge current, voltage drop, leakage, conductor, and suppression requirements within the official limits
        • Each point can be configured Off, On, or to hold its last state in Program mode
        • Each point can be configured Off, On, or to hold its last state after a communication fault
        • Commissioning should prove commanded states, reported states, fuse diagnostics, and the machine response to a simulated fault
        • ControlLogix discrete-output applications that require protected switching of 12/24 V DC field circuits
        • Two-bank DC actuation circuits that benefit from separate group power and 250 V continuous group-to-group isolation
        • Logix applications requiring selectable output behavior during Program mode or a communication fault
        Description

        Allen-Bradley 1756-OB16E is a Series A ControlLogix 16-point DC sourcing output module for 12/24 V DC field circuits.

        Its outputs are divided into two electronically fused groups of eight. The module reports output and fuse status to the Logix controller, supports programmable Program-mode and Fault-mode states, and provides 250 V continuous isolation between the two output groups and the backplane.

        Before installation or replacement, verify the Series A module definition, electronic keying, 1756-TBNH or 1756-TBSH removable terminal block, group field-power wiring, load current and surge, suppression, and configured Program-mode and Fault-mode behavior.

        Revisions

        Revision Part #

        Also known as

        1756-OB16E Ser A
        1756-OB16E/A, Series A, Rev A
        Get Parts Quote
        Alternative Names
        1756-OB16E 1756OB16E 1756 OB16E AB 1756-OB16E Allen-Bradley 1756-OB16E ControlLogix 1756-OB16E
        Technical notes
        Allen-Bradley 1756-OB16E is a Series A, group-fused ControlLogix output module. Verify the 20-pin RTB, group wiring, module profile, and load limits before replacement.
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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
        Does 1756-OB16E include the removable terminal block needed for field wiring?
        No. The 20-pin removable terminal block is ordered separately. Use 1756-TBNH or 1756-TBSH and verify that the selected RTB, terminal schedule, wire size, and mechanical keying match the installed panel.
        Why can a field fault on 1756-OB16E affect an eight-point bank rather than only one output?
        The 16 outputs are arranged as two electronically fused groups of eight, and the electronic fuse is implemented per group. A short circuit, reversed field wiring, or excessive load in one bank can therefore trip protection for that group. Isolate and test the affected bank before resetting it.
        Does 1756-OB16E provide electrical isolation between every output point?
        No. Rockwell specifies 250 V continuous isolation from output groups to the backplane and between the two groups, but no isolation between individual points within the same eight-point group. Design and test the field power distribution accordingly.
        Which Program-mode and Fault-mode states must be matched when replacing 1756-OB16E?
        Each output can be configured to turn Off, turn On, or hold its last state during Program mode or a communication fault; Off is the default. Record and reproduce the project settings before commissioning a replacement so actuators do not assume an unintended state.
        Can 1756-OB16E use a 1492 interface module instead of direct RTB wiring?
        Yes. Rockwell lists compatible 1492 interface-module and prewired-cable combinations for 1756-OB16E. Select the exact IFM and cable from the current Digital I/O User Manual, then verify conductor, per-point, per-group, and module current limits for the installed loads.
        What Series information should be matched when adding 1756-OB16E to a Logix project?
        The current catalog listing identifies 1756-OB16E as Series A, and Rockwell’s download listing shows firmware revision 3.004. Match the physical Series, module definition or Add-On Profile, firmware selection, and electronic-keying policy used by the controller project.
        Is 1756-OB16EK an alternative name for 1756-OB16E?
        No. Rockwell lists 1756-OB16EK as the conformally coated version. It shares the core electrical specification table with 1756-OB16E, but it is a separate catalog number. Quote the exact suffix shown on the installed module label.

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