Danfoss MCA 121 Operating Instructions Manual

Also see for VLT MCA 121 EtherNet/IP: Instructions Manual

Danfoss MCA 121 Operating Instructions Manual Manual pdf 39 page image

7 Troubleshooting7.1.1 Step-by-step TroubleshootingCheck: LEDsThe option contains two LEDs to indicate the state of the device and the network. During normal operation the MS and atleast one NS LED will show a constant green light.State LED DescriptionStandby Green: Flashing green The device needs commissioningDevice operational Green: Solid green The device is operationalMajor recoverable fault Flashing red The device has detected a recoverable fault (MAR)Major unrecoverablefaultRed: Solid red The device has detected a un-recoverable fault(MAU)Self test Red: Flashing red/green The EIP option is in self-test modeGreen:Table 7.1 MS: Module StatusState LED DescriptionNo connections Green: Flashing green There are no established any CIP connections tothe deviceConnected Green: Solid green There is established (at least) one CIP connection tothe deviceConnection time-out Red: Flashing red One or more CIP connections has timed-outDuplicate IP Red: Solid red The IP-address assigned to the device is already inuseSelf test Red: Flashing red/green The EIP option is in self-test modeGreenTable 7.2 NS1 + NS2: Network Status (one per port)Check: Link StatusThe status of the Ethernet link cannot be directly identified by means of the LEDs, if no CIP connection is established.Use 12-10 Link Status to verify presents of the link.Use 12-11 Link Duration to verify that the link is steady present.The parameter will show the duration of the present link, and preset to 00:00:00:00 if the link is broken.Check: CablingIn rare cases of cabling mis-configuration, the option might show the presents of a link, but no communication is running.Exchange the cable in doubt.Check: IP AddressVerify that the option has a valid IP address (please refer to section: IP Settings) in 12-01 IP Address. If the option hasidentified a duplicate IP Address NS LEDs will light steady red. If the option is set up for BOOTP or DHCP, verify that aBOOTP or DHCP server is connected in 12-04 DHCP Server. If no server is connected, the parameter will show:000.000.000.000.7.1.2 Alarm Word and Warning WordAlarm word and warning word are shown in the display in Hex format. If there is more than one warning or alarm, a sum ofall warnings or alarms will be shown. Warning word and alarm word are displayed in 16-90 Alarm Word to 16-95 Ext. StatusWord 2. For more information on the individual alarms and warnings, please refer to the frequency converter Design Guide.Troubleshooting MCA 121 EtherNet/IP38 MG.90.J3.02 - VLT® is a registered Danfoss trademark77