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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 Capacity (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 Capacity (liter/hr) x Pump Setting (%) x Specific Gravity x 0.16667
Control Operation
If the output is continuously on for longer than the Output Time Limit, then output will deactivate.
Output Details
The details for this type of output include the output %, HOA mode or Interlock status, alarms related to this out-
put, current cycle on time, total accumulated on-time, cycles of concentration, pulse rate, and the current control
mode setting.
Settings
Touch the Settings icon to view or change the settings related to the relay.
Target
Enter the desired PPM set point for the product.
Pump Capacity
Enter the maximum flow rate for the metering pump.
Pump Setting
Enter the stroke length setting for the metering pump, in percent.
Specific Gravity
Enter the specific gravity of the product to be added.
Hand Output
Enter the output % desired when the output is in Hand mode.
Flow Input
Select the flow meter to be used as an input for this control relay.
Cycles Input
Select the virtual input that is programmed as a Ratio calculation of the system
conductivity/makeup conductivity, or select None.
Low Cycles Limit
Enter the lower limit for cycles of concentration, if used. The calculated on-time is limited
to a maximum value if the cycles of concentration gets too low.
5.3.22
Relay, Counter Timer Control Mode
ONLY AVAILABLE IF HVAC MODES ARE DISABLED IN CONFIG MENU – GLOBAL SETTINGS
The Counter Timer algorithm activates the relay for a programmable amount of time, triggered by the accumula-
tion of a programmable number of contact closures from a Digital Counter type input.
Output Details
The details for this type of output include the relay on/off state, HOA mode or Interlock status, time on, remain-
ing on-time, accumulator total, total relay activation time, alarms related to this output, relay type and the current
control mode setting.
Settings
Touch the Settings icon to view or change the settings related to the relay.
Feed Duration
Enter the amount of time for the relay to activate for once the accumulated setpoint
number of contact closures has been reached.
Accumulated Setpoint
Enter the number of contact closures required to trigger the relay activation.
Input
Select the input to be used to control this output.
