Rockwell Automation Motion Analyzer Software - Manual (Page 48)

48 Rockwell Automation Publication MOTION-UM004B-EN-P - October 2012
Chapter 1 Welcome to Motion Analyzer Software
1.2.2.4.3.3. Analysis Tab
Click Analysis to display plots of drive module activity in terms of the DC bus
voltage and DC bus current:
• The red line is the bus voltage trip point.
• The green line is the DC bus voltage.
• The grey line is the bus current.
Figure 36 - Analysis Tab Dialog Box
Table 30 - Analysis Tab Properties
Parameters Description
Simulation Parameters
(1)
(refer to Figure 25 )
Shunt On The voltage level where the shunt enables.
Shunt Off The voltage level where the shunt turns off.
Trip The voltage level where the drive trips on an overvoltage fault by changing the trip volts.
Resistance The shunt resistance level in ohms.
Power Changing the power value modifies how much energy the shunt resistor can dissipate continuously.
Capacitance Changing the capacitance value changes the DC bus capacitance.
Zoom
(refer to
Figure 25 )
Time From/
Voltage From
Check these boxes to adjust the X- and Y-axis values for the plot. Click Plot to implement these changes.
Time Slice
The Time Slice variable sets the time interval for the Analysis tab. Because the shunt switching action is modeled
during selection, this value needs to be very short to obtain an accurate shunt selection (0.1 ms, for example).
However, if the total cycle time is more than a few seconds, the calculation time may become excessive. The time is
equal to the longest axis cycle.
(1) Click Apply to implement these changes.