44
Reset Cal
Reset Cal is used to reset the 4 mA and 20 mA calibration coefficients to the factory
defaults. Press the Enter key and the factory calibration will be restored.
5.6 Relay
Control
(HOA)
This menu will present you with a list of each relay. To the right of the name of the relay will be
an indication of the current state of the relay (OFF, or ON). To the right of this, the display will
show either the time that the relay has been on, counting up (if the relay is responding to set point,
and the time for the relay to shut off is unknown) or the time that has left to be on, counting down
(if the relay has been activated by a timer, and the controller knows when it will shut off). Below
the name of the relay will be the words “HAND” “OFF” and “AUTO”, each with a radio button to
the left of the word. Use the Next key to move the cursor to the line containing the radio buttons.
Use the Left Arrow and Right Arrow keys to move the cursor to the desired relay mode. Press the
Enter key to change the mode of the relay.
If the relay is in the AUTO mode, then it will respond to the set points or other programmed
parameters. This is the normal mode for the relay to be in.
If the relay is in the OFF mode, then the relay will be open regardless of whether the programming
of the controller dictates that the relay should be ON or OFF. IF THE POWER TO THE
CONTROLLER IS CYCLED OFF AND BACK ON, THE RELAY WILL REVERT BACK TO
AUTO MODE.
If the relay is in the HAND mode, then the relay will be closed regardless of whether the
programming of the controller dictates that the relay should be ON or OFF. If a Hand Time Limit
has been programmed in the controller, the relay will shut off after this time has elapsed, and the
mode will revert back to AUTO.
5.7
Set Points
This menu is used to adjust any of the control set points for the relays that are simple entries of
numbers. Any configuration of feed control modes (for example, bleed and feed versus feed based
on makeup volume) or biocide cycles (for example, changing from daily to weekly adds), etc. may
NOT be changed using the keypad. These types of changes require a computer to accomplish.
Refer to Section 6 for detailed descriptions of each control mode and set point menu.
Pressing the Enter key with Set Points highlighted will bring you to this display:
SET POINTS
Relay 1 (R1) Set Points
Relay 2 (R2) Set Points
Relay 3 (R3) Set Points
Relay 4 (R4) Set Points
Relay 5 (R5) Set Points
Relay 6 (R6) Set Points
Relay 7 (R7) Set Points
Relay 8 (R8) Set Points
If the relay has been given a custom name, this name will precede the relay number.
Pressing Next moves the highlight down the list, while Prev moves the opposite direction. Press
Enter to go into the highlighted menu. Press Exit to return to the Main Menu.
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