Emerson KJ2005X1-MQ1 12P6381X042 DeviceNet Interface Card | Replacement, Equivalent & Selection Guide
The Emerson KJ2005X1-MQ1 (Part No. 12P6381X042) is a DeviceNet communication interface card designed for the Emerson DeltaV Distributed Control System (DCS). It enables seamless integration between DeltaV controllers and DeviceNet field device networks, supporting real-time I/O data exchange in process automation environments. Konmask.com supplies both genuine OEM units and verified compatible alternatives to support your maintenance and upgrade needs.
Technical Specifications
- Manufacturer: Emerson Electric / Fisher-Rosemount
- Part Number: KJ2005X1-MQ1
- Reference Number: 12P6381X042
- Series: DeltaV S-Series / M-Series DCS
- Card Type: DeviceNet Interface / Communication Card
- Protocol: DeviceNet (CAN-based, IEC 62026-3)
- Network Role: Master / Scanner
- Max Nodes: Up to 64 nodes per network segment
- Baud Rates: 125 kbps / 250 kbps / 500 kbps
- Power Supply: Supplied via DeltaV carrier backplane
- Form Factor: DeltaV plug-in module card
- Weight: Approx. 320 g
- Operating Temperature: 0 °C to 60 °C
- Certifications: CE, UL (refer to OEM datasheet for full listing)
Compatible Replacement & Equivalent Models
The following models are commonly evaluated as replacements or functional equivalents. Always verify firmware compatibility and network topology before substitution:
- Emerson KJ2005X1-BA1 – Earlier revision of the same DeviceNet card family; confirm firmware version compatibility
- Emerson KJ2005X1-CA1 – Upgraded revision with enhanced diagnostics; drop-in compatible in most DeltaV versions
- Rockwell 1756-DNB – ControlLogix DeviceNet Bridge; suitable for cross-platform migration projects
- Rockwell 1769-SDN – CompactLogix DeviceNet Scanner; alternative for smaller footprint systems
- Hilscher CIFX 50-DN – Third-party DeviceNet master card; requires custom driver integration
Note: Third-party equivalents may require additional configuration. Contact Konmask.com for pre-sales compatibility assessment.
Why Choose the Original KJ2005X1-MQ1
- ✅ Guaranteed DeltaV compatibility – validated by Emerson for DeltaV v10.3 and above
- ✅ Plug-and-play installation – no additional driver or firmware flashing required
- ✅ Full OEM diagnostics support – integrates with DeltaV Diagnostics and AMS Device Manager
- ✅ Long-term availability – Konmask.com maintains stock for MRO and emergency replacement
- ✅ Traceability – each unit supplied with verifiable part number and revision label
Typical Applications
- Oil & gas upstream / downstream process control
- Chemical and petrochemical plant automation
- Power generation DCS integration
- Pharmaceutical batch process control
- Water treatment and utilities SCADA/DCS hybrid systems
- Pulp & paper and mining process automation
System Compatibility
- DCS Platform: Emerson DeltaV S-Series, M-Series, MD-Series controllers
- DeltaV Software: v10.3, v11.x, v12.x, v13.x, v14.x (verify with Emerson for latest)
- Carrier / Backplane: DeltaV 2/4/8-slot vertical and horizontal carriers
- Field Devices: Any DeviceNet-compliant sensor, actuator, or drive (IEC 62026-3)
- Network Topology: Trunk-line/drop-line, daisy-chain, star (with repeater)
Selection Guide
Use the following criteria to confirm the KJ2005X1-MQ1 is the right card for your application:
- Step 1 – Confirm DCS platform: Verify your controller is a DeltaV S-Series or M-Series with available card slot
- Step 2 – Check node count: If your DeviceNet segment has ≤ 64 nodes, this card is sufficient; for larger networks consider segmentation
- Step 3 – Verify DeltaV version: Minimum DeltaV v10.3 required; check Emerson compatibility matrix for your exact version
- Step 4 – Assess baud rate: Match card baud rate setting to existing network (125 / 250 / 500 kbps)
- Step 5 – Evaluate alternatives: If OEM lead time is critical, contact us for verified compatible options with same-day quotation
Quality Assurance & Sourcing
- All units are inspected for physical integrity, label authenticity, and revision marking prior to shipment
- Sourced from authorized distributors, decommissioned plant stock, or OEM-certified refurbishers
- Condition clearly stated on each order: New Surplus, Refurbished, or Used Tested
- 90-day warranty on all units; extended warranty available on request
- Export compliance: ECCN classification and export licensing assessed per destination country
How to Order
- Online: Add to cart directly from this page — stock availability shown in real time
- RFQ: Email [email protected] with quantity, required condition, and delivery timeline
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead Time: In-stock orders ship within 1–3 business days; sourcing orders typically 5–15 business days
- Shipping: DHL / FedEx / UPS international express; EXW Xiamen available for freight forwarder customers
Replacement & Compatibility FAQ
Q: Can KJ2005X1-MQ1 replace KJ2005X1-BA1 directly?
A: In most cases yes, as both are DeviceNet cards for DeltaV. However, confirm the DeltaV software version supports the MQ1 revision before swapping.
Q: Is this card compatible with DeltaV v14?
A: Yes, the KJ2005X1-MQ1 is supported on DeltaV v14. Always check Emerson’s official compatibility matrix for your specific build.
Q: Can I use a Rockwell 1756-DNB as a replacement?
A: Only in cross-platform migration scenarios. The 1756-DNB is not a plug-in DeltaV card and requires a separate ControlLogix chassis — it is not a drop-in replacement.
Q: What condition are units supplied in?
A: Condition is specified per listing (New Surplus / Refurbished / Used Tested). Contact us if you require a specific condition.
Q: Do you provide a test report?
A: Yes, functional test reports are available for refurbished and used-tested units upon request.
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