RLM02

Overview

ABB RLM02 is a Redundancy Link Module designed for PROFIBUS DP/FMS networks, ensuring reliable communication by managing redundancy paths. 

Serial Interfaces

• Connections: A, B, and M

• Transmission Rate: 9.6 kbit/s to 12 Mbit/s

• Type: RS-485

• Connector: 9-pin Sub-D

• Electrical Isolation: To IEC/EN 61010-1, functionally isolating

• Test Voltage: 500 Veff

• Device Protection Class: 3

Line Length Restriction

• Master ⇒ M: 50 m

• M ⇒ Slave: 50 m

• A/B ⇒ A/B: According to PROFIBUS specification

Data Telegram Delay

• A/B ⇒ M: 11 bit times (µs) + 0.6 µs

• M ⇒ A/B: 4 bit times (µs) + 0.6 µs

Power Supply

• Operating Voltage: 24 V DC (+20 … +33 V)

• Power Consumption: 120 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 … 55 °C

• Transport / Storage Temperature: -30 … 85 °C

• Relative Humidity: Max. 75% (non-condensing) in operation

• Altitude: Up to 2000 m

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