ABB RLM02 Redundancy Link Module for PROFIBUS DP/FMS

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 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 VDC (+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

Alarm Contact:

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

Design:

• Dimensions (H x W x D): 134 x 56 x 70 mm
• Weight: Approx. 330 g
• Attachment: Mounting rail, 35 mm
• Protection: IP 20 (indoor use, installation in an appropriate enclosure is equivalent)

Certification:

• Corrosive Atmosphere: G3 (ISA-S71.04 Severity level: G3)
• USA: UL-listed
• Canada: CSA
• Europe: CE
• Ships and Maritime Systems: DNV GL
  • Temperature: Class B
  • Humidity: Class B
  • Vibration: Class B
  • EMC: Class B
  • Enclosure: Class A