User Manual

Analog Inputs Configurations and Use
Advanced Digital Motor Controller User Manual 63
Configuring the Digital Inputs and the Action to use can be done very simply using the PC
Utility.
Wiring instructions for the Digital Inputs can be found in “Connecting Switches or Devices
to Inputs shared with Outputs” onpage 44
Analog Inputs Configurations and Use
The controller can do extensive conditioning on the analog inputs and assign them to a
different use.
Each input can be disabled or enabled. When enabled, it is possible to select the whether
capture must be an absolute voltage or relative to the controller’s 5V Output. Details on how
to wire analog inputs and the differences between the Absolute and Relative captures can
be found in “Using the Analog Inputs to Monitor External Voltages” page 50.
TABLE 4-2. Analog Capture Modes
Analog Capture Mode Description
Disabled Analog capture is ignored (forced to 0)
Absolute Analog capture measures real volts at the input
Relative Analog captured is measured relative to the 5V Output which is typically
around 4.8V to 5.1V depending on the controller model and the load.
Correction is applied so that an input voltage measured to be the same
as the 5V Output voltage is reported at 5.0V
The raw Analog capture then goes through a series of processing shown in the diagram
below.
Min/Max/Center
Analog
Inpu
t
Command
Selectable Action
Selectable Action
Feedback
Deadband Exponent
Use
Select
AIn > Max
AIn < Min
FIGURE 4-2. Analog Input processing chain