85
Onset Time
The onset time determines when the duration timer starts. If set to zero, the dura-
tion time starts immediately. If set higher than that, the controller will not start the
duration timer until the spike set point is achieved, or until the onset time is over,
whichever comes first.
Duty Cycle Period
Using a duty cycle helps to prevent overshooting the set point in applications
where the response of the sensor to chemical additions is slow. Specify the amount
of time for the cycle, and the percentage of that cycle time that the relay will be
active. The relay will be off for the rest of the cycle, even if the set point has not
been satisfied.
Enter the length of the Duty Cycle Period in minutes:seconds in this menu. Set the
time to 00:00 if use of a duty cycle is not required.
Duty Cycle
Enter the percentage of the cycle period that the relay will be active. Set the
percentage to 100 if use of a duty cycle is not required.
Event 1 (through 8)
Enter these menus to program spike events via the menus below:
Repetition
Select the time cycle to repeat the event: 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.
Start Time
Enter the time of day to start the event.
Duration
Enter the amount of time that the relay will be on.
Input
Select the sensor to be used by this relay.
Direction
Select the control direction.
Daily Max Time
Enter the maximum amount of accumulated on-time, in Hand or Auto modes, that
the relay can have between midnight and midnight the next day. If the time is
exceeded, the relay will deactivate, and a Daily Max Timeout alarm will be
triggered. The alarm will clear, and relay allowed to reactivate at midnight the next
day.
If the relay was in Hand mode when the alarm was triggered, it will revert to
whichever HOA state it was in prior to being set to Hand.
To override the Daily Max Limit for the rest of the day, press Reset Output
Timeout.
5.3.18
Relay or Control Outputs Output, Flow Proportional Mode
ONLY AVAILABLE IF CONTROLLER INCLUDES PULSE OUTPUT HARDWARE
Overview
In Flow Proportional control mode, the controller monitors the rate of flow through an analog or digital flow meter,
and continuously adjusts the proportional band to achieve a target PPM level.
The user enters the target PPM and the data necessary to calculate the proportional band (the water flow rate at
which the maximum pulse rate will occur) required to maintain the target PPM with that flow rate of water.
% output =
Target PPM
x Water Flow Rate (liter/min or gal/min)
Cycles x Pump Rating (liter or gal/hr) x Pump Setting (%) x Specific Gravity x 166.67
% output =
Target PPM
x Water Flow Rate (m3⁄min)
Cycles x Pump Rating (liter/hr) x Pump Setting (%) x Specific Gravity x 0.16667
