ABB RLM01 Redundancy Link Module

Overview

The ABB RLM01 Redundancy Link Module is designed to provide redundancy and fault tolerance for PROFIBUS DP/FMS communication networks. It ensures uninterrupted data transmission by maintaining a secondary communication path in case of failures.

Technical Specifications

Serial Interfaces

• Connections: A, B, and M
• Transmission Rate: 9.6 kBit/s to 12 MBit/s
• Type: RS 485
• Connection: 9-pin Sub-D connector
• Electrical Isolation: To VDE 0110, functionally isolating
• Test Voltage: 500 Veff
• Device Protection Class: 3

Power Supply

• Operating Voltage: 24 VDC (+20 .. +33 V)
• Power Consumption: 150 mA typically at 24 V
• Power Loss: Approx. 3.6 W
• Connection: 8-pin terminal strip
• Wire Cross Section: 0.14 ... 1.5 mm²

Ambient Conditions

• Operating Temperature: 0 ... 50°C
• Transport / Storage Temperature: -30 ... 85°C
• Relative Humidity: Max. 75% non-condensing in operation

Alarm Contact

• Function: Open in case of error
• Switching Voltage: < 60 VDC
• Switching Current: Max. 1A

Design

• Dimensions: 134 x 56 x 70 mm (H, W, D)
• Weight: 330 g
• Protection: IP 20
• Attachment: DIN mounting rail, 35 mm

Certification

• USA: UL
• Canada: CSA
• Europe: CE
• Ships and Maritime Systems: Germanischer Lloyd (Category A, B, C, D), in connection with 24 VDC power filter (Surge)

Accessories

• 3 PROFIBUS connectors
• 1 or 2 24 VDC power filters (Surge), depending on supply (single/redundant)