ABB RLM01 AC800F Redundancy Link Module for PROFIBUS DP/FMS
Description:
RLM 01 converts one simple, non-redundant Profibus line into two reciprocally redundant lines A/B. The module works bidirectionally, which means that all three interfaces can receive and transmit data.
Conversion of one simple, non redundant PROFIBUS line into two reciprocally redundant lines A/B and vice versa.
Use on PROFIBUS DP/FMS lines
Automatic line selection
Transmission rate 9.6 kBit/s .... 12 MBit/s
Communication Monitoring
Repeater functionality
Wire cross section 8-pin terminal strip, up to 1.5 mm²
Redundant power supply, 24 VDC (+20 .. +33 V), 150 mA typically at 24 V
Operating temperature 0 ... 50°C
Status and error display
Power supply monitoring
Potential-free signaling contact
Easy assembly on a DIN mounting rail
RLM01 is certified for applications on ships and maritime systems by the Germanic Lloyd (GL). To meet the increased requirements regarding EMC and overvoltage, RLM01 must have one or two "24 VDC power supply filters (surge)" depending on the supply (single / redundant). The supply of several RLM01 behind one filter is not admissible. The max. length of the lines between filter and RLM01 must not exceed 1 m. Possibly needed fuse elements have to be arranged before the filter. The electrical connection to ground potential is effected via the module attachment as with RLM01. The following example shows the interconnection in case of a redundant supply of RLM01. For a single supply of RLM01, the L2+ terminal has to be bridged with the second L1+ terminal.