NOTEIt is not possible to reset errors or warnings on theconnection box itself. An active error can only be deletedby:• NMT-Reset• Restarting the connection box• Error reset via the ISD Toolbox software orCoDeSysSee 12.3 Emergency Codes for further information.7.1.4 Push ButtonThe push button can be used to scroll through thelist of messages and to set IDs.The CAN-ID is shown when the push button is pressed for3 seconds.7.1.5 BCD SwitchThe BCD switch is used to assign the IDmanually. See 6.2 CAN-ID Setting.7.1.6 Service InterfaceCAUTIONThe service interface is only for use by Danfoss Service.7.2 Display via Toolbox and CoDeSysIn addition to the display on the ISD connection box, it ispossible to query the status of the connection box via ISDToolbox.In order to do this, it is necessary to connect to the CANbus network via a PC/laptop. A CAN dongle is required,which realises the physical connection between the CANbus network and the connection box.The ISD Toolbox enables the individual ISD components tobe displayed directly and thereby information about theISD components to be attained.The parameters of the ISD components can also be readvia CoDeSys on the master controller.The ISD Toolbox software, firmware updates, EDS files andCoDeSys libraries can be downloaded from the Danfosswebsite (www.danfoss.com).7.3 Machine StatesInitError ResetVoltageDisabledFaultDischargedPowerDownFaultChargedOperationEnabledSwitch OnSwitch OffSwitch OffPowerUpUnderVoltageOverVoltage130BD168.10Illustration 7.3 Machine StatesIllustration 7.3 shows the main state machine transitions.The states 'Under Voltage' and 'Over Voltage' are sub-states of state 'Operation Enabled'. Therefore these statesinherit all transitions of their base state.State 'Init' performs checks related to state 'VoltageDisabled' and makes a direct transition into state 'FaultCharged' if the capacitors are found charged.An emergency message is sent whenever the connectionbox enters into any fault state. Each commandedtransition, that has been rejected because properoperation can't be guaranteed, results in a warningemergency message being sent. Emergency messages areadded to the history and displayed on the connection boxdisplay.All measurements and derived values are accessible via theCAN object dictionary in all states.Servicing operations, such as firmware flash, connectionbox reset or CAN-ID setting are only allowed in unpoweredstates.Operation VLT® ISD Connection Box Operating InstructionsMG75G102 - VLT® is a registered Danfoss trademark 377 7
