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Instruction Manual RAK-LINK Wired RAK Connection Unit
2025 Version 3.2.6
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Contents 1.0 What is the RAK-LINK? 3 2.0 RAK-LINK Overview 3 3.0 Installing the RAK-LINK 4 4.0 Terminating the RAK-LINK 7 5.0 Programming the RAK-LINK 7 Appendix 1: RAK-LINK diagnostics 8 Appendix 2: Example Systems Diagrams 9
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1.0 What is the RAK-LINK?
The RAK-LINK enables communication between Rako Wired Network (RWN) devices and the connected RAK8-MB units.
Up to 32 circuits can be mapped to a single RAK-LINK (4 RAK8-MB units); multiple RAK-LINKs can be used should more circuits be required.
The RAK-LINK supports up to two CAT5 or CAT6 cables via the punch-down connector and has three RJ11 ports that can connect Rako Wired accessories.
The power supply on the RAK-LINK is capable of powering up to 40 Rako Wired devices via the punch-down connector.
NB The RAK-LINK RJ11 ports are for single RWN accessories and must not be used to join RAK-LINKs together. 2.0 RAK-LINK Overview
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No. Description 1 RJ45 connection to RAK8-MB 2 RWN termination jumpers 3 Mains input terminal 4 Ribbon cable between the bottom board and the top board 5 Diagnostic LEDs 6 3 x RJ11 ports for single RWN accessories
3.0 Installing the RAK-LINK
The overall safety of any system incorporating this equipment is the responsibility of the assembler of the end system. A qualified electrician must install the Rako module. Ensure all wiring follows local electrical standards. Use only appropriately rated cables, and secure all connections before powering on. The Rako module must be connected to a mains supply that includes appropriate protective devices. Failure to comply with these requirements may result in damage to the equipment, risk of fire, or electrical hazards.
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Remove the front cover and plastic 1 knockouts to allow cables to pass in and out of RAK-LINK.
If RAK units are being 2
used, slot the RAK-LINK housing into the RAK metalwork using the plastic rails.
Screw RAK-LINK to the wall and prepare the mains supply cable.
Remove the top tray 3 by disconnecting the ribbon cable and screws.
Fix the lower tray into the wall-mounted metal housing using the screws indicated in the diagram.
Wire the mains supply 4 into the terminal block.
Insert the RJ45 cable that links the RAK-LINK to a stack of RAKs.
Prepare two remaining screws to be slotted into the top tray.
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Reattach the ribbon 5 cable between the top and bottom board.
Slot the top tray into the bottom tray and screw down.
Punch down the CAT5 6 to the RWN to complete the installation.
If required, connect up to three Wired accessories (for example, the WK-HUB) to the RJ11 ports.
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4.0 Terminating the RAK-LINK The termination required depends on the position of the RAK-LINK within the System.
No Term - Both Jumpers removed Used when the RAK-LINK is not at the end of line. This is usually identifiable by two cables being punched down to the RAK-LINK.
Term - Jumper fitted across 1+2 & 4+5 Used when the RAK-LINK is end of line in a radial configuration.
Star Term - Jumper fitted across 2+3 & 5+6 Used when the RAK-LINK is end of line in a STAR wire configuration.
5.0 Programming the RAK-LINK The RAK-LINK is programmed using the Rasoft Pro programming software. A WK-HUB or WA/WTC-Bridge is required for any programming of a Wired System.
For more information on how to program a RAK-LINK please refer to the Wired System Setup Guide
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Appendix 1: RAK-LINK diagnostics Red LED diagnostics require an ISSUE B circuit board and firmware version 0.4.6 or above.
RAK-LINK LED Status Number Colour Indicates Uses/example 1 Blue Device status Flashing - Device in setup Flashing - Network looping poll Solid - In bootloader
2 Blue Power/ CAN bus Solid - Normal operation - DC power present activity Flashing - CAN bus transmitting or receiving
3 Red CAN Diagnostics CAN warning CAN error
Red LED Status Troubleshooting (Potential causes) Warning: RED LED fast flash One or more data line(s) have been shorted to a power line. RAK-LINK is in setup mode with no network attached. The network is busy (LED 2 will also be flashing fast). Warning: RED LED slow flash Power supply under voltage. Power is supplied from another source. Error: RED LED solid RAK-LINK put into polling mode with no network attached or CAN bus short circuit.
Once a fault has been cleared, power cycle the RAK-LINK to clear the LED diagnostics.
NB Caution should be exercised while using this table for diagnostic purposes. The suggested possible cause is the most likely of many possible outcomes but is not a guaranteed solution.
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Appendix 2: Example Systems Diagrams
Radial Wired System The diagram below shows a RAK-LINK in a Wired radial System.
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STAR Wired System The diagram below shows a RAK-LINK in a Wired STAR System.
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