Vacon NX Series Applications Manual
Also see for NX series: User manualUser manualApplications manualMaintenance manualOperating guide
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Contents
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• The interlock data can be used even when the Autochange function is not activated• If the interlock of an auxiliary drive is inactivated and another unused auxiliary driveavailable, the latter will be put to use without stopping the AC drive.• If the interlock of the controlled drive is inactivated, all motors will be stopped andrestarted with the new set-up.• If the interlock is re-activated in Run status, the automatics functions according toparameter 2.9.23, Interlock selection:Table 220: Selections for Interlock selectionSelectionnumber Selection name Description0 Not used1Update in stop Interlocks are used. The new drive will be placed last in theautochange line without stopping the system. However, if theautochange order now becomes, for example, [P1 -> P3 ->P4 -> P2], it will be updated in the next Stop (autochange,sleep, stop, etc.).EXAMPLE:[P1 -> P3 -> P4] -> [P2 LOCKED] ->[P1 -> P3 -> P4 -> P2] ->[SLEEP] -> [P1 -> P2 -> P3 -> P4]2Stop & Update Interlockings are used. The automatics will stop all motorsimmediately and re-start with a new set-up.EXAMPLE:[P1 -> P2 -> P4] -> [P3 LOCKED] -> [STOP] -> [P1 -> P2 -> P3-> P4]See Chapter 9.13 Examples of Autochange and Interlock selection.9.13 EXAMPLES OF AUTOCHANGE AND INTERLOCK SELECTION9.13.1 PUMP AND FAN AUTOMATICS WITH INTERLOCKS AND NO AUTOCHANGESituation:• One controlled drive and three auxiliary drives.• Parameter settings: 2.9.1=3, 2.9.25=0• Interlock feedback signals used, autochange not used.• Parameter settings: 2.9.23=1, 2.9.24=0• The interlock feedback signals come from the digital inputs selected with parameters2.2.6.18 to 2.2.6.21.• The Auxiliary drive 1 control (P2.3.1.27) is enabled through Interlock 1 (P2.2.6.18), theAuxiliary drive 2 control (P2.3.1.28) through Interlock 2 (P2.2.6.19) etc.PARAMETER DESCRIPTIONS VACON · 367LOCAL CONTACTS: HTTP://DRIVES.DANFOSS.COM/DANFOSS-DRIVES/LOCAL-CONTACTS/ 9 |
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