Danfoss VLT ISD 410 Operating Instructions Manual

Contents

Danfoss VLT ISD 410 Operating Instructions Manual Manual pdf 35 page image

WARNINGDISCHARGE TIME!The DC link capacitors of the servomotors remain chargedfor some time after the mains supply is switched off at thepower supply module.To avoid electrical shock, fully disconnect the powersupply module from the mains before carrying outmaintenance. The DC links of the individual ISDservomotors are connected in parallel when they areconnected as a group, which increases the discharge time.Wait for at least the time listed below before carrying outmaintenance work:Number Minimum waiting time(discharge time)1-60 servomotors 10 minutesNote: High voltage may be present even if the LED on the ISDconnection box is not lit!Table 10.2 Discharge Time10.3.1 Cable ReplacementHybrid cable replacement is necessary when the ratednumber of bending cycles has been reached or the cable isdamaged. You may replace the cable yourself. Danfosssupplies an installation tool for this purpose with theservomotor.CAUTIONNever disconnect or connect the cable from theservomotor with the supply voltage connected. Doing sowill damage the electronic circuitry. Observe the dischargetime for the DC link capacitors.CAUTIONDo not forcefully connect or fit the connectors. Incorrectconnection will cause permanent damage to theconnector.10.3.1.1 Feed Cable ReplacementProceed as follows:Disconnecting cables1. Disconnect the power supply module from itspower source (mains network).2. Wait for the necessary discharge time to elapse.3. Loosen the feed cable connector on theconnection box.4. Loosen the threaded ring of the connector on theservomotor. Use the Danfoss installation tool forthis purpose.5. Disconnect the feed cable (and the sensor cable ifpresent) from the servomotor.Cable replacementReplace the feed cable with a cable of identical type andlength (see the VLT® ISD 410 Design Guide, MG75I for partnumbers).Connecting cables1. Connect the female connector of the feed cableto the male connector of the first servomotor.2. Turn the threaded rings hand tight.3. Check the cabling again for sufficient slack.4. Using the Danfoss installation tool, tighten thethreaded rings of the connectors.Maintenance and Repair VLT® ISD 410 Servomotor Operating Instructions34 MG75D102 - VLT® is a registered Danfoss trademark1010