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DELTAV S-SERIES / PLUS I/O
KC3021X1-BK1
DI 32-Channel 24 VDC Dry Contact Plus Card
The KC3021X1-BK1 is an S-series Plus discrete-input card designed for 32-channel, 24 VDC dry-contact input applications. The BK1 version is intended for redundant S-series architectures and interfaces field signals with the DeltaV controller through the S-series LocalBus.
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EMERSON
KC3021
DI / 32 CH / 24 VDC
PLUS • REDUNDANT
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01 / PRODUCT CORE
Built for dense
discrete input The KC3021X1-BK1 concentrates 32 discrete input channels in an S-series Plus architecture, making it suitable where a large number of binary field states must be brought into a DeltaV control system while maintaining a redundant I/O arrangement. |
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CHANNELS
32
Discrete input channels
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FIELD VOLTAGE
24 VDC
Field circuit supply
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LOCALBUS
50 / 75 mA
Typical / maximum at 12 VDC nominal
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HEAT
5.3 W
Card heat dissipation
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Electrical Characteristics
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Power & Installation Characteristics
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INPUT ROLE
KC3021X1-BK1
32-channel discrete input card for 24 VDC dry-contact field signals. It belongs to the Plus I/O family and is associated with redundant S-series operation.
Primary purpose: bring binary field states into the DeltaV control architecture.
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SIMPLEX COUNTERPART
KC3021X1-BA1 / BA2
The BA family represents the corresponding M-series/S-series Plus card family in simplex-capable configurations, while the BK1 designation is associated with the redundant S-series implementation.
Key distinction: the suffix and termination arrangement determine the intended architecture.
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ADJACENT I/O ROLES
KC3011X1-BK1
16-channel 4–20 mA HART Plus analog output.
KC3020X1-BK1
32-channel 24 VDC high-side Plus discrete output.
KC3030X1-BK1
Four-port Fieldbus H1 Plus interface.
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| SIGNAL PATH | 24 VDC Field Device | → | KC3021X1-BK1 | → | S-series LocalBus / Controller |
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DIRECT INDUSTRIAL SUPPORT
Need KC3021X1-BK1
for your DeltaV system? Send the part number, required quantity, destination, required date and machine or system details. AMIKON can coordinate availability and delivery requirements for industrial automation spare parts.
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AMIKON LIMITED
Sales Manager: Miya Zheng
Delivery: 3–5 days | Warranty: 12 months
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| Delivery 3–5 days |
Warranty 12 months |
Packaging Brand New |
Shipping FedEx / DHL / UPS / TNT / EMS |
Payment T/T |
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Q1. Is KC3021X1-BK1 the correct choice when the DeltaV design requires redundant discrete input cards?
Yes. The BK1 designation is associated with the redundant S-series Plus implementation. Emerson identifies KC3021X1-BK1 as the DI 32-channel 24 VDC dry-contact Plus card and specifies the redundant termination arrangement for this architecture.
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Q2. What should be checked before replacing KC3021X1-BK1 in an existing DeltaV cabinet?
Check that the application uses the S-series controller and the appropriate redundant discrete-input termination arrangement. The field circuit is a 24 VDC dry-contact input architecture, and the card occupies an assigned S-series I/O carrier slot.
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Q3. Does KC3021X1-BK1 provide electrical separation between the 32 input channels and the system?
Each channel is optically isolated from the system, and the Plus card is factory tested to 1500 VDC for the specified isolation characteristic. This makes the isolation specification an important consideration when matching the card to field wiring and cabinet requirements.
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Q4. What electrical limits matter most when sourcing KC3021X1-BK1 as a replacement?
The key checks are the 24 VDC field circuit, ON detection above 2 mA, OFF detection below 0.25 mA, 5 kΩ input impedance, and the card's LocalBus requirement of 50 mA typical and 75 mA maximum at 12 VDC nominal. These values help prevent a visually similar I/O card from being substituted incorrectly.
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Q5. Why does KC3021X1-BK1 matter when planning cabinet power and thermal loading?
The card has a specified heat dissipation of 5.3 W and requires 12 VDC LocalBus power, while the field circuit uses 24 VDC. For a redundant installation, cabinet designers should account for the applicable card and system power requirements rather than calculating the load from channel count alone.
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| L5504AMP | MVME172PA-652SE | DR890 | X20DC4395 | 7CX408.50-1 |
| SR2E201BD | PHC10103 | HQ30D | MVME2304-0121 | TSXPSY2600 |
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