ABB|RLM01| Redundancy Link Module
Description
The ABB RLM01 Redundancy Link Module converts a non-redundant PROFIBUS DP/FMS line into two redundant RS485 lines or vice versa, ensuring reliable communication in industrial and maritime applications.
Features
- Converts non-redundant to redundant PROFIBUS lines.
- Monitors communication and signal integrity.
- Supports repeater functionality.
- Provides error/status display via LEDs and contacts.
- Certified for maritime use by Germanischer Lloyd.
Technical Specifications
Serial Interfaces
- Connections: RS485, 9-pin Sub-D connectors (A, B, M).
- Transmission Rate: 9.6 kBit/s to 12 MBit/s.
- Electrical Isolation: 500 Veff, functionally isolating per VDE 0110.
- Data Telegram Delay: 11 bit times + 0.6 µs (A/B to M or M to A/B).
Power Supply
- Operating Voltage: 24 VDC (+20 to +33 V).
- Power Loss: Approximately 3.6 W.
- Redundant Supply: Seamless switchover if one source fails.
- Load Distribution: Based on applied voltage levels (L1+, L2+).
Environmental Conditions
- Operating Temperature: 0 to 50°C.
- Storage Temperature: -30 to 85°C.
- Relative Humidity: Max 75%, non-condensing.
Mechanical Data
- Wire Cross Section: 0.14 to 1.5 mm².
- Dimensions: 70 mm (W) x 85 mm (H) x 67 mm (D).
- Weight: Approximately 300 g.
- Mounting: DIN rail, snap-on installation.
Diagnostics and Signaling
- Switching Current: Max 1 A for alarm contact.
- LED Indicators: Activity and error status on front panel.
- Diagnostic Messages: Via 8-pin terminal strip.
Certifications
- Approvals: CE, UL/CSA, Germanischer Lloyd (Categories A, B, C, D).
- EMC Compliance: Requires 24 VDC power pack filter (surge).
ABB|RLM01| Redundancy Link Module



ABB|RLM01| Redundancy Link Module
Description
The ABB RLM01 Redundancy Link Module converts a non-redundant PROFIBUS DP/FMS line into two redundant RS485 lines or vice versa, ensuring reliable communication in industrial and maritime applications.
Features
- Converts non-redundant to redundant PROFIBUS lines.
- Monitors communication and signal integrity.
- Supports repeater functionality.
- Provides error/status display via LEDs and contacts.
- Certified for maritime use by Germanischer Lloyd.
Technical Specifications
Serial Interfaces
- Connections: RS485, 9-pin Sub-D connectors (A, B, M).
- Transmission Rate: 9.6 kBit/s to 12 MBit/s.
- Electrical Isolation: 500 Veff, functionally isolating per VDE 0110.
- Data Telegram Delay: 11 bit times + 0.6 µs (A/B to M or M to A/B).
Power Supply
- Operating Voltage: 24 VDC (+20 to +33 V).
- Power Loss: Approximately 3.6 W.
- Redundant Supply: Seamless switchover if one source fails.
- Load Distribution: Based on applied voltage levels (L1+, L2+).
Environmental Conditions
- Operating Temperature: 0 to 50°C.
- Storage Temperature: -30 to 85°C.
- Relative Humidity: Max 75%, non-condensing.
Mechanical Data
- Wire Cross Section: 0.14 to 1.5 mm².
- Dimensions: 70 mm (W) x 85 mm (H) x 67 mm (D).
- Weight: Approximately 300 g.
- Mounting: DIN rail, snap-on installation.
Diagnostics and Signaling
- Switching Current: Max 1 A for alarm contact.
- LED Indicators: Activity and error status on front panel.
- Diagnostic Messages: Via 8-pin terminal strip.
Certifications
- Approvals: CE, UL/CSA, Germanischer Lloyd (Categories A, B, C, D).
- EMC Compliance: Requires 24 VDC power pack filter (surge).