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- ABB
- DLM02
- Link Module
- Switzerland
- 185 x 313 x 42 mm
- 1.7kg
- P-37421-4-0338434
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 142
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| sales@plc-automations.com | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
ABB DLM02 P-37421-4-0338434 Link Module
Product Overview
The ABB DLM02 P-37421-4-0338434 is a DIN-mount industrial link module that provides high-speed, galvanically-isolated data exchange between field I/O clusters and ABB control processors. Designed for continuous 24 / 7 operation, it handles deterministic peer-to-peer messaging, time-stamped event forwarding, and redundant network fail-over without performance loss. Its rugged metal housing, extended temperature range, and firmware-upgradeable architecture make it a long-lived backbone component for new builds and brown-field expansions alike.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | DLM02 P-37421-4-0338434 |
| Series | ABB Symphony Plus / Freelance Link Family |
| Form Factor | DIN-rail, 35 mm |
| Dimensions (H × W × D) | 185 × 313 × 42 mm |
| Weight | 1.7 kg |
| Supply Voltage | 24 V DC (18…36 V DC tolerated) |
| Power Draw | 9 W typ., 12 W max. |
| Back-plane Interface | 2 × redundant 100 Mbps optical rings |
| Field Bus Ports | 2 × RJ-45 100 Base-TX, 1 × ST duplex fiber |
| Protocols | Modbus TCP, EtherNet/IP™, PROFINET IO Device, ABB HI-Speed Link |
| Event Time-Stamp | 1 ms resolution, IEC 60870-5-104 ready |
| Isolation | 1 500 V RMS port-to-port & port-to-supply |
| Operating Temp. | –25 °C … +70 °C |
| Storage Temp. | –40 °C … +85 °C |
| Humidity | 5 % … 95 % RH, non-condensing |
| Shock / Vibration | IEC 60068-2-27 / -6 compliant |
| Firmware Update | Secure bootloader via USB-C service port |
| Protection | Reverse-polarity, surge, ESD (IEC 61000-4-2 Level 4) |
| Compliance | CE, UL 508, c-UL-us, RoHS, UKCA |
Applications
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Power & Utilities – Links remote I/O racks to Symphony Plus controllers in turbine, boiler and sub-station processes, guaranteeing deterministic trip logic.
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Oil & Gas – Provides low-latency peer messaging between pipeline compressor stations and central SCADA servers, even over mixed copper/optical networks.
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Chemicals & Pharma – Synchronises batch unit skids with plant-wide MES, ensuring secure recipe download and event capture to CFR 21 Part 11 audit trails.
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Water & Wastewater – Bridges distributed pump-station RTUs and central treatment PLCs, maintaining redundancy during fibre or copper link failures.
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Metals & Mining – Handles noisy, long-cable environments, distributing high-speed interlocks between crusher PLCs, conveyor drives and stacker-reclaimers.
Product Advantages
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True Hot-Standby Redundancy – Dual back-plane rings and twin Ethernet ports auto-switch in <50 ms with zero packet loss.
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Field-Upgradeable Security – SHA-256 signed firmware and role-based web GUI protect networks from unauthorised code.
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Massive Throughput Headroom – 4000 packets / s sustained, leaving CPU cycles free for application logic.
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Universal Protocol Gateway – Converts Modbus TCP, PROFINET and EtherNet/IP in a single chassis, reducing gateway count.
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Rugged Mechanics – Zinc-plated steel shell and conformal-coated PCB survive 5 g vibration and corrosive atmospheres.
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Low Lifecycle Cost – 10-year MTBF and tool-free module swap shorten outages and cut spares inventory.
Brand: ABB
ABB is a world leader in electrification and industrial automation. Its Symphony Plus and Freelance control platforms power utilities, marine vessels, and process plants on every continent, renowned for reliability, cybersecurity, and long-term support.
Related Models – Same / Companion Series
| Model | Key Parameters | Typical Use |
|---|---|---|
| DLM01 | 1 × 100 Base-TX, 1 × RS-485; 24 V DC; 150 mm depth | Compact field I/O bridge for brown-field retrofits |
| DLM03 | 4 × fiber ST ports; 48 V DC; –40…+70 °C | Long-haul optical ring concentrator |
| DLM04 | 2 × SFP slots; redundant 24/48 V DC inputs | High-availability gigabit backbone for sub-stations |
| DLM05 | Built-in Profibus-DP master; 16 kV surge isolation | Linking legacy DP slaves to modern DCS |
| DLM06 | Wi-Fi 6 client + 2 × RJ-45; IEC 62443-4-1 compliant | Secure wireless spur for skid units |
Popular ABB Modules
| Model | Primary Function | Notable Specs |
|---|---|---|
| AI931 | 8-ch analog input | 16-bit, HART pass-through, –20…+60 °C |
| TU890 | Field termination unit | 16-slot, quick-disconnect, IP20 |
| BC810K01 | CEX bus interconnection | 127.5 × 185 × 59 mm, 0.77 kg |
| CS513 | Serial / Ethernet gateway | 120 × 80 × 40 mm, Modbus/Profibus |
| DAO01 | 8-ch digital output | 24 V DC / 0.5 A ch., 203 × 51 × 330 mm |
Frequently Asked Questions (FAQ)
Q1：What controllers does the DLM02 support?
A1：Any Symphony Plus AC 800M, Freelance AC 900F, or third-party PLC that speaks Modbus TCP or PROFINET IO.
Q2：Can I mix copper and fiber links on the same module?
A2：Yes. Two copper RJ-45s and one ST fiber port may be used concurrently for redundant paths.
Q3：Is a separate power supply required for redundancy?
A3：The DLM02 accepts dual 24 V DC feeds; if one fails the unit stays online without reboot.
Q4：How do I upgrade firmware?
A4：Connect a laptop to the USB-C service port, authenticate, and load the signed package via the web UI. No plant shutdown needed.
Q5：What cybersecurity features are built in?
A5：Secure boot, TLS-encrypted configuration, role-based access, and Syslog forwarding for audit trails.
Q6：Does the module log diagnostics?
A6：Yes. It stores the last 10 000 events with time-stamp; logs can be exported in CSV or pushed via SNMP traps.
Q7：What is the MTBF?
A7：Calculated MTBF exceeds 150 000 hours at 40 °C per MIL-HDBK-217F.
Q8：Can I daisy-chain two DLM02s?
A8：Absolutely. Use port bonding or ring topology; the module’s RSTP engine prevents broadcast loops.
Q9：What happens if a port is shorted?
A9：Auto-shutdown isolates the fault; other ports continue service and an alarm is flagged to the DCS.
Q10：Is a conformal-coated version available?
A10：All production units ship with silicone coating for chemical and salt-mist resistance.
Authenticity guarantee
All product specifications are original and authentic imported products. We have an annual sales volume of 300 million yuan, and we only produce original and authentic products. All customers who cooperate with us directly online can enjoy low discounts.
Free warehouse
We have a complete range of product models, 80% of conventional models are in stock, and we have established channels in Asia, Africa, North America, South America, and Europe, effectively shortening the order processing time and satisfying customers in a timely manner.
Technical Team
Fast delivery. Spot goods can be shipped on the same day, and the delivery time transaction is 20% faster than that of peers on average, with a delivery time accuracy rate of 99%.
Thoughtful after-sales service
24-hour after-sales service guarantee team, professional and standardized management service system.