Evoqua DEPOLOX - Combinations of Controller Modes; Cl2 Single Feedback Closed Loop Control; Cedox

Description DEPOLOX
®
Pool
26 WT.050.570.000.DE.IM.0714
1.2.5 Combinations of controller modes
DEPOLOX
®
Pool gives you the option of running various controller mo-
des in combination with ECO mode.
The operator can select four different controller modes:
Cl2 single feedback
closed loop control
Normal mode: Cl
2 setpoint
ECO mode: Cl
2 setpoint ECO
Cl2 setpoint: In this mode, the required Cl2 value is held at the setpoint
using the PI single feedback closed loop control.
Setting parameters: Xp, Tn, setpoint
The flocculent control system measures at a constant rate.
Cl2 setpoint
ECO: In ECO mode, the reduced Cl2 value is held at the
setpoint using the PI single feedback closed loop control. There is a
digital input to switch the system to ECO mode.
ECO setting parameters: Setpoint
ECO, XpECO, TnECO
The flocculent control system measures at a constant rate.
This ECO mode can also be used for disinfectant control in combina-
tion with reduction of the circulation.
CEDOX Normal mode: CEDOX
ECO mode: CEDOX
ECO
(Version 2.00 and higher)
CEDOX:
In this mode, the setpoint entered is not Cl2 as normal, but
the required redox potential is set as the setpoint. The specially devel-
oped CEDOX mode calculates the amount of free chlorine required in
the water based on the demand. This internal Cl2 setpoint is used to
measure the required quantity of disinfectant using the PI single loop
feedback controller.
Setting parameters: Redox setpoint, Xp, Tn
The flocculent control system measures at a constant rate.
CEDOX ECO:
In CEDOX ECO mode, the mode is also controlled
based on a redox setpoint. There is a digital input to switch the system
to ECO mode. The device calculates the required concentration of free
chlorine in the water based on load and controls this Cl
2 setpoint using
the PI single loop feedback control.
Setting parameters: Redox setpoint
ECO, XpECO, TnECO
The flocculent control system measures at a constant rate.
This ECO mode can also be used for disinfectant control in combina-
tion with reduction of the circulation.