Danfoss VLT 5000 Operating Instructions Manual

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Danfoss VLT 5000 Operating Instructions Manual Manual pdf 68 page image

Synchronizing controllerMG.10.N4.02 - VLT is a registered Danfoss trademark 67How to program synchronizationChange the value of parameter 701 to “2”. This will start the synchronization program of VLT 5000.To do the synchronization programming you use the following parameters:Parameter 725 Type of operation: Record “2” or “5” for marker synchronization.Parameter 732 Marker synchronization behaviour: Specify here how the slave drive is to reactwhile synchronizing to the master marker. “0” means the last marker pulse ofthe master - the slave synchronizes to the last master marker pulse alreadyregistered - it catches up. “1” means the next master marker pulse - the slavewaits for the next master marker and synchronizes to it - the slave slows down.“2” means that the slave uses the nearest master marker - it decides for itselfwhether to catch up or slow down.Parameter 733 Accuracy: Record a value (quadcounts) for a tolerance within which the slaveposition may deviate from the position of the master.Parameter 734 Marker quantity Fault: Inaccuracy: Record the number of market signals togenerate a Fault signal.Parameter 735 Marker quantity Ready: Accuracy: Record the number of marker signals togenerate a Ready signal.Parameter 737 Gear ratio No.: Record the number of the gear ratio that is to be displayed inParameters 738 to 742. First set the number of the gear ratio, then inParameters 738 to 742 the necessary values for this gear ratio. The next gearratio is then selected in Parameter 737 and the same procedure is repeated.Parameter 738 Gear ratio numerator: Record the numerator value for the gear ratio. That isthe encoder pulses of the slave drive. To make fine adjustment possible bymeans of inputs 32 and 33 a ratio of for example 7:16 must be programmedas 7000:16000.Parameter 739 Gear ratio denominator: Record the denominator value of the gear ratio. Thisvalue corresponds to the master pulses.Parameter 740 Slave markers: Record the number of slave markers for the marker ratio.Ensure that the gear ratio and the marker ratio match each other.Parameter 741 Master markers: Record the number of master markers for the marker ratio.Ensure that the gear ratio and the marker ratio match each other.Parameter 742 Fixed Offset: Record a fixed position offset for the selected gear ratio (quadcounts). This value specifies the position deviation between the slave markerand the master marker. During operation the offset can be changed by meansof inputs 32 and 33.Note: Offset is related to the master position. Offset related to the slaveposition can be calculated as follows:Offset_slave = 739738*ParameterParameterOffsetParameter 743 Step time: Record the delay in ms from one frequency change to another (holdmode) and from one gear ratio numerator factor change to another(synchronization mode) when there is a signal on terminal 32 or 33.