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          Active / Available from OEM
          Apter Power confirms KC3021X1-BA2 certification scope and terminal fit before quotation.

        KC3021X1-BA2

        / 4.9
        1001 reviews ｜ Need a Specific Revision?
        Emerson KC3021X1-BA2 is a DeltaV 32-channel 24 VDC dry-contact Plus input card for high-density discrete status acquisition.
        In Stock
        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.
        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 KC3021X1-BA2

        • Manufacturer:
          Emerson
        • Part Number:
          KC3021X1-BA2
        • Product Family:
          DeltaV
        • Product Type:
          DeltaV 32-Channel 24 VDC Dry-Contact Plus Input Card
        • Stock:
          1
        • Channels:
          32
        • Input Type:
          24 VDC dry contact
        • Local Bus Power:
          12 VDC at 75 mA
        • Bussed Field Power:
          24 VDC at 30 mA
        • Field Circuit:
          24 VDC at 4.5 mA per channel
        • Ambient Temperature:
          -40°C to +70°C
        • Relative Humidity:
          5% to 95%, non-condensing
        • Terminal Block Key:
          E3
        • Airborne Contaminants:
          ISA-S71.04-1985 Class G3
        • Tariff Code:
          Please confirm the destination before shipping
        • 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 Contact-State Processing State Mapping Cabinet Resilience Product Applications

        Features:

        • Dense status acquisition: A single Plus-card position can gather a broad group of equipment states for interlock, alarm and sequence logic.
        • Defined contact discrimination: The field circuit turns passive contact condition into a consistent controller state instead of relying on an unverified powered signal.
        • Installation discipline: Keyed mating and explicit power-isolation rules reduce the chance that service work creates an incorrect hardware or energy state.
        KC3021X1-BA2 is a high-density DeltaV discrete-input Plus card for collecting passive switch and relay-contact states.

        Each accepted field condition becomes a named controller input that can drive alarms, permissives, trips and equipment sequences.

        Its service value comes from traceability: the contact, terminal, card channel and DeltaV point can be checked in order instead of treating a missing state as an unexplained controller fault.

        Apter Power can help confirm the terminal, environment and certification fit for the Emerson KC3021X1-BA2 DeltaV 32-Channel 24 VDC Dry-Contact Plus Input Card before quotation.
        Emerson KC3021X1-BA2 DeltaV 32-Channel 24 VDC Dry-Contact Plus Input Card 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.
        • Field excitation: The input circuit applies a defined sensing condition to a passive contact instead of expecting the device to generate an analog value.
        • State decision: Current crossing the input threshold becomes a repeatable ON or OFF condition for DeltaV logic.
        • System isolation: Optical separation creates a troubleshooting boundary between the field circuit and the controller-side bus.
        • Logic handoff: The accepted state is exposed as a named point for alarm, permissive, trip or sequence execution.
        • Named point relationship: Each physical contact is assigned to a specific DeltaV input used by the control strategy.
        • Normal-state definition: Engineering determines whether an open or closed field condition represents healthy, running, ready or tripped equipment.
        • Logic context: The same electrical state can drive an alarm, permissive or sequence transition according to the configured module.
        • Observable chain: Field action, card indication and operator display provide separate checkpoints for validating the point.
        • Coated electronics: Conformal coating adds resistance to airborne contamination but remains one layer of the cabinet protection strategy.
        • Thermal margin: Enclosure design must remove accumulated heat so high-density inputs do not operate at the edge of their rating.
        • Contamination control: Filters, sealing and maintenance determine whether the internal environment remains suitable over time.
        • Installation governance: Site classification, enclosure design and the approved DeltaV procedure together define where the card can be used.
        • Dry-contact status groups: Collects passive switch and relay states into a high-density DeltaV input position.
        • Permissive and interlock logic: Supplies named discrete conditions used by controller sequences and operating safeguards.
        • Equipment-state indication: Brings documented field contact changes into alarms and operator displays.
        • Plus-card cabinet designs: Adds dense discrete input where the approved terminal, enclosure and installation procedure are provided.
        Description
        KC3021X1-BA2 is a high-density DeltaV dry-contact input card that brings limit switches, relay contacts, equipment status and permissive signals into controller logic. It gives operations one organized view of many discrete field states without converting them into analog measurements.

        The main advantage of KC3021X1-BA2 is reliable state acquisition in an installation-controlled Plus-card format. Dense point capacity reduces cabinet spread, while the defined card-to-terminal relationship helps maintenance trace a field contact to the correct DeltaV status before an interlock or sequence is returned to service.
        Technical notes
        Remove field power before connecting or removing KC3021X1-BA2, and do not insert or remove the card with system power energized. Set the associated terminal block key to E3. The unit has no user-serviceable parts and requires no calibration; follow DeltaV document 12P2046 for hazardous-area installation.
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        • 100% Satisfaction

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          Not only do we have a vast inventory, our team makes sure every piece of equipment is in working condition. Your purchases are also backed by our Warranty.

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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
        A sensor provides a transistor voltage output rather than a passive contact. Can it be landed directly on KC3021X1-BA2?
        Do not connect it as though it were a dry contact. Use a manufacturer-supported interposing interface or select the correct input type after verifying the sensor output, polarity and common reference; an energized output can violate the documented contact circuit.
        A limit switch is physically closed but its KC3021X1-BA2 point remains OFF. What should be measured before replacing the card?
        Measure the field supply and actual input current at the terminal while the contact is closed. The ON state requires more than 2 mA, so excessive contact resistance, cable drop or a weak supply can keep a mechanically closed switch below detection.
        Many inputs changed to OFF together after cabinet work on KC3021X1-BA2. Is simultaneous card-channel failure the first assumption?
        No. Check bussed field power, terminal-block seating and the return path defined by the installed wiring before treating the channels as separate faults. A shared field-circuit interruption can remove many states at once.
        A normally closed contact makes the KC3021X1-BA2 point ON during the healthy equipment state. Must the field wiring be reversed?
        No. The card reports the electrical contact state; DeltaV logic assigns its process meaning. Document the normal state, configure any required inversion and test healthy, alarm and broken-wire outcomes before using the point in a permissive.
        A field contact is open, but its KC3021X1-BA2 point remains ON. What should be checked before replacing the card?
        Measure current at the terminal with the contact open. The published OFF condition is below 0.25 mA; if the measured current remains higher, isolate the field circuit and connected device before treating the input electronics as failed.
        The KC3021X1-BA2 certification marking is unreadable in a cabinet designated for a hazardous location. Can the input card be energized for testing?
        No. Stop the installation until the actual unit marking and destination classification can be matched to the applicable DeltaV instructions. A readable model code without verifiable approval marking is not enough for hazardous-location use.

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