Link Module | DLM 02 P 37421-4-0338434 | ABB

Key Highlights
Manufacturer: ABB
Model Number: DLM 02 P 37421-4-0338434
Product Type: Link Module
Availability: In Stock
Condition: Original New
Country of Origin: Switzerland

Technical Specifications

The ABB DLM 02 P37421-4-0338434 Link Module is a communication interface module developed for the ABB H&B Freelance 2000 distributed control system. The module serves as a communication link between controllers, operator stations, engineering stations, and distributed I/O components, enabling reliable exchange of process data throughout the automation network.

Troubleshooting & Commissioning Checklist

Network & Cabling: Verify that all PROFIBUS or fieldbus communication cables are securely connected to the terminals and free of signal degradation. Power Supply: Check that input power (typically 24V) to the module's terminals is stable and matches the required specifications without dips or surges
Power Supply: Ensure the module is receiving a stable 24V DC input and drawing the correct power (rated for ~7W).
Physical Mounting: Inspect the physical housing and terminals for any mechanical damage or shipping defects.
Network Interconnections: Securely connect so data can correctly route between the module and other nodes in the network.
System Version Verification: The DLM 02 is designed for V3 Freelance 2000 environments. Ensure the master system architecture is compatible with this V3 firmware.

Signal & Redundancy Failures

Power Supply: Ensure the module is receiving a stable 24V DC input and drawing the correct power (rated for ~7W).
Physical Mounting: Inspect the physical housing and terminals for any mechanical damage or shipping defects.
Network Interconnections: Securely connect so data can correctly route between the module and other nodes in the network.
System Version Verification: The DLM 02 is designed for V3 Freelance 2000 environments. Ensure the master system architecture is compatible with this V3 firmware.

Technical FAQ

Q: What is the primary function of the DLM 02?
A: The DLM 02 monitors two separate 24V power supply voltages and seamlessly switches between them. If one power supply fails, the DLM 02 makes the required change-over without causing a power failure or interruption to the subsequent connected system

Q: How is the module mounted during installation?
A: The DLM 02 is designed for standard industrial DIN-rail mounting, making it easy to integrate into existing electrical and control cabinets.

Q: What are the electrical power requirements?
A: The module requires a nominal internal power input of 24V with a power draw of 7W.

Q: Do you supply brand-new, original parts or second-hand refurbished items?

A: Our stock consists of Original New items; all products undergo quality inspection to ensure they are fully functional.

Q: What guarantees are included with the shipment?
A: All items in stock are tested by engineers, packed in professional ESD packaging, and shipped via express logistics with a global delivery time of 24–48 hours.

Q: How long does global shipping take?
A: Stock items are typically dispatched within 24 hours. Shipments are sent via DHL or FedEx Express, taking approximately 3–5 days to reach Asia, 4–6 days to Europe and the Middle East, and usually arriving within a week in major industrial regions worldwide.

Q: If the model I need is not listed on the website, can I request a quote?
A: Yes. We hold over 200,000 SKUs of industrial spare parts in stock, and many long-tail models are not listed in full. You can send us an RFQ (Request for Quote) directly, and we will provide wholesale pricing promptly.

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