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Special Condition Handling
Overlapping timer events
If a second timer event occurs while the first one is still active, the second event will be ignored. An Event
Skipped alarm will be set.
Interlock Conditions
Interlocks override the relay control, but do not change the operation of the timer control.
A digital input or output interlock condition does not delay the relay activation. The relay activation duration
timer will continue even if the relay is deactivated due to an interlock condition. This will prevent delayed events
which can potentially cause problems in they do not occur at the correct time.
“Activate With” Conditions
“Activate with channels” settings override the relay control, but do not change the operation of the timer control.
The relay activation duration timer continues counting when the timer relay is forced on, and ends at the expect-
ed time (event start time plus duration). If the “activate with” condition continues after the end of the event time,
the relay remains activated.
Alarms
An Event Skipped alarm is set when a second timer event occurs while one event is still running.
An Event Skipped alarm is also set when the timer relay never turns on during an event because of an interlock
condition.
The alarm is cleared when the relay is next activated for any reason (the next timer event or HAND mode or
“activate with” force on condition).
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, accumulated on-
time, alarms related to this output, current cycle on time, relay type and the current control mode setting. The cur-
rent week number and day of the week is displayed (even if there is no multi-week repetition event programmed).
Cycle Time shows the time counting down of the currently active part of the timer cycle.
Settings
Touch the Edit icon to view or change the settings related to the relay.
Event 1 (through 10)
Enter these menus to program timer events via the menus below:
Repetition
Select the time cycle to repeat the event: Hourly, Daily, 1 Week, 2 Week, 4
Week, or None.
An event means that the output is turned on at the same time of day, for the same
amount of time, and except for the Daily cycle, on the same day of the week.
Week
Only appears if Repetition is longer than 1 Week. Select the week during
which the event will occur.
Day
Only appears if Repetition is longer than Daily. Select the day of the week
during which the event will occur.
Events Per Day
Only appears if Repetition is Hourly. Select the number of events per day. The
events occur on the Start Time and then evenly spaced throughout the day.
Start Time
Enter the time of day to start the event.
Duration
Enter the amount of time that the relay will be on.
Add Last Missed
Select Enabled if the controller should delay start the most recent Biocide
cycle until immediately after an Interlock clears, or Disabled if all Biocide
feed should be skipped if there is an Interlock condition at the time the add
was due to start.
5.3.16
Relay or Control Outputs, Probe Wash Control Mode
Basic Timer Operation
When a Probe Wash event triggers, the algorithm will activate the relay for the programmed time. The relay will
activate a pump or valve to supply a cleaning solution to the sensor or sensors. The output of the selected sensors
will either be held or disabled during the cleaning cycle, and for a programmable hold time after the cleaning cycle.
