6.6.2.7
6.6.2.8
Midnight Rollover
The Scheduler (see Scheduler Usage and Custom Alarm examples above) functionality is
simple. It tests to see if the System Time is greater than the time entered by the user. This
means that at midnight, 00.00.00, the user time will always be greater than the System Time.
Example
So how can the scheduler be set up to ensure that this midnight rollover will not cause a
problem with any Custom Signal that uses the System Time? In real life, you might want to
trigger a generator and keep it on for some amount of time regardless of the midnight rollover.
These sample equations will configure Custom Signal 1 to remain on for about 30s even if
midnight rollover occurs.
Custom Signal 1 Equation:
([System Time (HH.MM.SS)] > <<23.59.55>> | [Custom Signal 1]) & ([Timer 1] < 29)
Timer 1 Equations:
Run Event: [System Time (HH.MM.SS)] > <<23.59.55>>
Stop Event: [Timer 1] >30
By this example, we see Custom Signal 1 go to 1.00 at 5 seconds to midnight, then go to 0.00
at about 25 seconds after midnight. This behavior will repeat daily.
Converter Signals
This feature will enable the user to view the status for all of the acquired converters in the
system; including but not limited to:
Total Conv. Current
Avg Conv. Output Voltage
Total Conv. Input Current
# Failed Conv.
# Conv. Minor Alarm
# Conv. In Comms Lost
# Conv. Input Voltage Failed
# Out Of Tolerance Conv.
# Conv. In Current Limit
# Conv. Fan Failed
Converter Load Voltage
Converter Load Current
# Acquired Conv.
The existing Controller Signals category now includes signals for Converter Load Voltage and
Converter Load Current; by default, Average Conv. Output Voltage and Total Conv. Output
Current are used respectively.
Re-configurable System Load Current and System Battery Voltage
For converter shelves that do not have any Cordex rectifiers in the system, the system Load
Current may be re-configured to display the total converter output current and the system
Battery Voltage may be re-configured to display converter output voltage; that is, the signals
can be renamed.
Recommendation For Converter Redundancy
A redundant converter in a system will allow one converter to be shut down while the other
converters supply power to the load; e.g., during firmware upgrade.
0350046-J0 Rev C
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6.6.2.9
Counter
Select this heading from the pull-down menu to access individual counters. See figure below:
Name of item being edited
Toggle the check box to select
Select Event buttons
to evoke Equation Builder Keypads
Discard changes and
return to previous screen
Sliders and scroll bars
are used for navigation
Select menu item to configure
Equation displays here
Use slider to navigate/view as required
Accept changes and
return to previous screen
Figure 56–Counter access window
Summary: The Counter feature allows the tracking of event occurrences for any signal that the controller
software is able to monitor as an equation. Any signal that is viewable through the equation builder is
available.
Enable: Check the Enable checkbox to activate the counter.
Line Value: Current count value. The reset button will set the value to 0.
Count Event: The Count Event is an equation entry indicating the condition to count. This equation is
used to detect transitions. For example, if the equation is set to [AC Main] > 24, the counter will trigger
when the voltage moves from 24 volts or less to above 24 volts.
Reset Event: The Reset Event is the trigger condition that sets the Count value back to 0.
General Note: The Timer and Counter values themselves can be used in equations. They can monitor
each other.