EATON
HFX Product Family Installation and Operation Manual E-ELCL-II002-E2 July 2019
26
HFX Product Family
Figure 2: Analog/Digital Inputs Configuration tab.
The programmer changes the configuration of an
individual input using the AIN mode value drop down
selection.
Note: That if any of the following auto configurations is selected
offline, the state for the corresponding pull-up, pull-down, and
current shunt will change once the program is downloaded into
the application controller.
Variables:
•
AIN mode: This represents the type of input
connected.
•
Pull-up enabled: This is used in manual mode to
activate the Pull-up resistor.
•
Pull-down enabled: This is used in manual mode to
activate the Pull-down resistor.
•
Current shunt enabled: This is used in manual
mode to activate the Current shunt resistor.
•
Filter time constant: This is a Digital low pass
filter time constant that the input passes through,
this is useful if you wish to filter out some random
variation on the input or if you wish to reduce how
quickly the input changes value.
•
DIN debounce: This is a time value used to
debounce mechanical switches that would
otherwise trigger the input multiple times
when closed.
•
DIN rising threshold: This sets the lower limit
voltage level necessary for the input to register
as high.
•
DIN falling threshold: This sets the upper limit
voltage level necessary for the input to register
as low. Used in conjunction with the above DIN
rising threshold, an appropriate hysteresis level
can be defined.
•
Over-range limit: This sets the upper range limit for
the associated over range fault.
•
Under-range limit: This sets the lower range limit
for the associated under range fault.