Description

ABB DLM01 Link Module Product Description

Technical Specifications

• Product Model: DLM01
• Brand: ABB
• Warranty: One Year
• Input Voltage: 24 VDC supplied via DCS rack backplane
• Operating Temperature: 0°C to +55°C
• Storage Temperature: -40°C to +70°C
• Response Time: ≤0.9 ms data frame forwarding latency
• Protection Class: IP20 (cabinet eurocard rack‑mount installation)
• Accuracy Class: Industrial communication grade
• Output Frequency: Not applicable
• Rated Current Range: 0.26 A typical operating current
• Communication Interface: S100 backplane bus, external link port
• Supported Protocols: ABB proprietary S100 parallel backplane bus protocol
• Overload Capacity: Signal surge suppression, transient noise protection
• Dimensions: 234 mm × 324 mm × 22.5 mm

Product Overview

The ABB DLM01 is eurocard‑format link module built for ABB Advant AC400 DCS platforms, acting as inter‑rack communication bridge to transmit process data and control commands between distributed control cabinets. This automation hardware maintains bus timing integrity and routes S100 bus packets across multiple racks for expanded DCS architectures. It addresses typical legacy system bottlenecks including insufficient inter‑rack connection ports and unstable cross‑cabinet communication under plant electromagnetic noise. Facilities running large ABB DCS deployments use this spare component to sustain multi‑rack synchronisation and avoid major system rework.