Danfoss AK-LM 330 Design Manual

Also see for AK-LM 330: User guide

Contents

62 RS8FR302 © Danfoss 2015-08 AK-LM 330If there is no answer from the system unitIf the Status LED does not start flashing faster than normal, the control-ler has not been installed in the network. The reason for this may beone of the following:The controller has been assigned an address out of rangeAddress 0 cannot be used.If the system unit in the network is an AKA 243B Gateway only the ad-dresses between 1 and 10 can be used.The selected address is already being used by another controller orunit in the network:The address setting must be changed to another (vacant) address.The wiring has not been carried out correctly.The termination has not been carried out correctly.The data communication requirements are described in the document:”Data communication connections to ADAP-KOOL® Refrigeration Con-trols” RC8AC.Installation in network1. Set the address (here, for example 3)Turn the right-hand address switch so that the arrow will pointat 3.The arrow of the two other address switches must point at 0.2. Push the Service PinPress down the service pin and keep it down until the ServicePin LED lights up.3. Wait for answer from the system unitDepending on the size of the network it may be up to oneminute before the controller receives an answer as to whetherit has been installed in the network.When it has been installed the Status LED will start to flashfaster than normal (once every half second). It will continuewith this for about 10 minutes4. Carry out new login via Service ToolIf the Service Tool was connected to the controller while youinstalled it in the network, you must carry out a new login tothe controller via the Service Tool.The controller has to be remote-monitored via a network. In this net-work we assign address number 3 to the controller.The same address must not be used by more than one controller in thesame network.Requirement to the system unitThe system unit must be a gateway type AKA 245 with software version6.0 or higher. It is capable of handling up to 119 AK controllers.Alternatively, it can be an AK-SM 720. It is capable of handling up to 200AK controllers.