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Name
The name used to identify the sensor may be changed.
Type
Select the type of sensor to be connected to the digital input channel
5.2.16 DI Counter Input
ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS
A digital input counter input is used to count contacts from a digital input, totalize the number of contacts, and
monitor or control on the rate of contacts.
Input Details
The details for this type of input include the current rate, total contacts counted (in user defined units), date and
time of last total reset, alarms, and the current type of input setting.
Settings
Touch the Settings icon to view or change the settings related to the virtual input.
Alarms
Low and High Alarm limits may be set.
Deadband
This is the Alarm Deadband. For example, if the High Alarm is 100, and the deadband
is 1, the alarm will activate at 100 and deactivate at 99
Totalizer Alarm
A high limit on the total number of contact closures accumulated may be set.
Alarm & Datalog
Suppression
If any of the relays or digital inputs are selected, any alarms related to this input
will be suppressed if the selected relay or digital input is active. At the same time,
all datalogs and graphs containing the input will show no data for the duration of
the activation.
Reset Total
Enter this menu to reset the accumulated total to 0. Touch Confirm to accept, or Cancel
to leave the total at the previous value and go back.
Set Total
This menu is used to set the total number of contact closures stored in the controller a
certain value.
Scheduled Reset
Choose to automatically reset the flow total, and if so, Daily, Monthly or Annually.
Units
Type in the units of measure for the what the contacts represent (widgets, etc.)
Rate Units
Select the units of measure for the rate time base (widgets per second, minute, hour,
day).
Units per Pulse
Enter the number of units represented by one pulse.
Smoothing Factor
Increase the smoothing factor percentage to dampen the response to changes. For
example, with a 10% smoothing factor, the next rate reading shown will consist of an
average of 10% of the previous value and 90% of the current value.
Name
The name used to identify the sensor may be changed.
Type
Select the type of sensor to be connected to the digital input channel.
5.2.17
Virtual Input – Calculation
A Virtual Input is not a physical sensor; it is a value that is calculated from two physical sensor inputs. The analog
values that can be used for each type of calculation are selected from a List of all defined sensor inputs, analog
inputs, flowmeter rates, the other virtual input, solid state relay %, and analog output %.
Calculation modes are:
•
Difference
(Input - Input 2)
•
Ratio
(Input / Input 2)
• This selection could be used to calculate Cycles of Concentration in HVAC applications, for example
