Control Techniques Epsilon EP-P, Reference Manual

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Epsilon EP-P Drive Reference Manual
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Revision A4 www.controltechniques.com
parameter is used along with the DistUnits.CharacteristicDist to establish the relationship between user distance and motor
travel distance. See the section on the User Units View in the Setting Up Parameters chapter.
Distance Decimal Places
DistUnits.Decimal
This parameter is used to select the number of decimal places used in the DistUnits.CharacteristicDist. Using a high number
of decimal places will improve positioning resolution, but will also limit the maximum travel distance. The number of decimal
places set in this parameter determines the number of decimal places used in all distance parameters throughout the
software. You can select from zero to six decimal places of accuracy.
Distance Units Name
DistUnits.Name
This is a text variable which is used as the label for the distance/position user units. It can be up to 12 characters in length.
Enable Channel Check Box
DriveAnalogInput.ChannelEnable
By default, the analog input channel is enabled meaning that the drive is reading the A/D value read by the analog circuit. If
the check box is clear, the channel is not enabled and the configuration parameters for the analog input is unavailable and
therefore has no effect.
To enable the analog input, simply select the Enable Channel check box, and the configuration parameters will become
available to edit. With the channel enabled, the trajectory loop update will transfer data from the drive into
DriveAnalogInput.RawValue as volts and into DriveAnalogInput.ValueIn scaled.
Destination Variable
DriveAnalogInput.CustomDestinationVariable
PowerTools Pro displays a text box that the user can enter any available parameter using the dot notation format for the
variable on the Analog Inputs View.
When the Popup Variables... button is pressed a window will open containing the list of variables that can be dragged into the
Destination Variable text box.
Destination Variable is used to allow Position Tracker or Correction index types to perform an index to the scaled analog value.
Set the Destination Variable to an index distance parameter. When the index type is set to Position Tracker, the Analog to
Position scaling is used to scale the index’s absolute position. When the index type is set to Correction, the Analog to Distance
scaling is used to scale the index’s incremental distance.
Bandwidth
DriveAnalogInput.LowPassFilterFrequency
This parameter sets the low-pass filter cutoff frequency applied to the analog input. Signals exceeding this frequency will be
filtered at a rate of 20 db per decade.
Maximum Value
DriveAnalogInput.MaxUserValue
Enter the maximum value in analog user units that the maximum analog voltage should correspond to. Set Maximums Group.
Maximum Voltage
DriveAnalogInput.MaxVoltageValue
Enter the maximum voltage that will be seen on the analog input terminals. The user can enter the value in this field by hand,
or set the analog source to it’s maximum value, and click on the “Set Max Voltage to Measured” button next to the text box on
the Analog Inputs view. This will read the current value on the analog channel and enter it into the Maximum Voltage text box.
Minimum Value
DriveAnalogInput.MinUserValue
Enter the minimum value in analog user units that the minimum analog voltage should correspond to.
Minimum Voltage
DriveAnalogInput.MinVoltageValue
Enter the minimum voltage that will be seen on the analog input terminals. The user can enter the value in this field by hand,
or set the analog source to it’s minimum value by clicking on the "Set Min Voltage to Measured" button next to the text box.
This will read the current value on the analog channel and enter it into the Minimum Voltage text box. This parameter is used