Illustration 5.34 Graphical Zoom In using the MouseThe Scope can perform automatic scaling and offset of thetrace signals. The scaling and offset behavior depends onthe state of Scope in which the trace is shown. There are 3different auto-scale modes in Scope:• Zero-centred (Ctrl+1)• Aligned and zero-centred (Ctrl+2)• Maximized (Ctrl+3)The Maximized (Ctrl+3) and Zero-centred modes performthe scaling and offset separately for each signal withoutany aligning between channels. The Aligned and zero-centred mode performs the same scale and offset onsignals with the same unit.The Zero-centred (Ctrl+1) auto-scale mode sets the verticalzero-point of each signal to be in the middle of the chartarea and the global maximum of the signal to be at about10% below the top of the chart.The Aligned and zero-centred (Ctrl+2) auto-scale modegroups the channels by signal unit and performs the samescaling for every channel in a group. It sets the verticalzero-point of each signal to be in the middle of the chartarea. For each group, it sets the signal with the highestamplitude to have a global maximum at most at about10% below the top of the chart and a global minimum atleast at about 10% above the bottom of the chart. Allother signals in the same group are set the same scale.The Maximized (Ctrl+3) auto-scale mode maximizes theusage of the Scope chart area by scaling each trace signalto have its global minimum at about 10% above thebottom of the chart and its global maximum at about 10%below the top of the chart. This way, each signal iszoomed to a maximum while all trace samples are withinthe visible vertical range.Auto-scaling can be triggered by the following keyboardshortcuts:• Ctrl+1 performs Zero-centred auto-scaling.• Ctrl+2 performs Aligned and zero-centred auto-scaling.• Ctrl+3 performs Maximized auto-scaling.5.7.3.9 Saving and Loading DataThe Scope sub-tool can save trace data and trace settingsin various ways:• ISD trace files (.isdtrc)- Full measurement range- Cursor-selected measurement range• Trace settings (.isdtrs)• Pattern file (.dat)A trace can be opened by double-clicking on the file itself(for example in Windows Explorer) or by selecting menuentry [File → Open → Scope trace] and then selectingthe .isdtrc file.ISD trace files (.isdtrc)Scope can save and load trace data with the extension*.isdtrc. The file contains the data of the recorded trace andthe display information (scaling factors, offsets, and colors).Measurement range (.isdtrc)Sometimes, it is required to cut out unneeded data. In thiscase, Scope can save the trace data of a given range withinthe shown trace. To store only a subset of the trace, setthe vertical cursors to the start and end of the range to besaved and then select the drop-down option Savemeasurement range. The format and information that issaved is the same as when saving the full range.Trace settings (.isdtrs)In order to save and restore a given trace configurationand visualization parameters, it is possible to save onlythese settings as an ISD trace settings file. The structure ofthe file is the same as the structure of the trace settingssection of the .isdtrc file format but without the data itself.When opening an .isdtrs file with the Scope, it is automat-ically applied.Pattern file (.dat)To perform a pattern search with the drive in AdvancedCAM mode (see chapter 2.4.5.5 Advanced CAM), it isnecessary to first record a pre-defined pattern. Trace thesignals Pattern Sensor Act Even and Pattern Sensor Act Oddand mark the pattern with the vertical cursors at the startand the end of the pattern to be found. Then save it viathe drop-down option Save Pattern As in the drop-downmenu of the Save button.Operation with ISD Toolbox VLT® Integrated Servo Drive ISD® 510 System130 Danfoss A/S © 01/2017 All rights reserved. MG36D10255
