BA-40100-02-V17 | 27
Operating instructions
For the remote indication of the measured values, TOPAX DX has a sim-
ilar output for each measured value input 0/4...20 mA.
The settings 0...20 mA or 4...20 mA see chapter “19.1.29 Menu 5.15:
Recorder outputs” on page 38. The adjustment of the outputs to ex-
ternal devices is made however in Menu 2 (see chapter “19.1.10 Menu
2.3: Recorder (analog outputs 0/4 - 20 mA)” on page 35). A measure-
ment can be assigned to the minimum and maximum values.
In order to check the outputs and for adjusting them to the attached
instruments and devices, you submit the 20 mA outputs to a test signal
(see chapter “19.1.17 Menu 5.2: Outputs” on page 37).
The signal can assume any value between 0 and 20 mA. This can be
achieved individually for the configured controllers or recorder outputs.
ATTENTION!
The TOPAX DX is equipped with a maximum of 8
current outputs. When switched on, the special func-
tions of total chlorine and conductivity are already
assigned to 6 power outputs of the measured values.
If, additionally, the 20 mA controller outputs are configured, the maxi-
mum number of hardware outputs may be exceeded.
In this case, the priorities are assigned such that the controller outputs
and the output to the flocculant pump have priority. This means that no
transmission of the measured values (0/4...20 mA) is any longer availa-
ble for temperature and conductivity.
When too many 20 mA outputs are selected, the disconnection se-
quence is:
1. Temperature measurements
2. Conductivity measurements
ATTENTION!
If the 0/4...20 mA continuous controller output is
configured for an automatic controller, this can be
manually adjusted to the actuator independently of
the settings in the service menu - "recorder". It is
possible to configure the 0...20 mA controller output
and a 4...20 mA recorder output. It must be noticed
that eventual changes in the „Service – Recorder
menu“ will be reset after 20 mA outputs.
12 Night operation
TOPAX DX allows you to reduce use of Chlorine during night-time and/
or after the closure of the SPA baths and pools. For this "economy op-
eration mode", two timers can be defined. To automatically start the
night-time mode, adjust these timers and assign them to the individual
weekdays. These settings are adjusted in the "service - timer menu".
The setpoint, which you need to reduce, can be adjusted in the main
"night mode" menu. Moreover it is possible to reduce the capacity of
the recirculation system. Adjust the parameters of the controller, based
on the default settings for reduced recirculation power. Afterwards the
night operation mode can be started. This can happen automatically
when the TOPAX DX timer is activated or when the night-time is directly
switched on.
A second possibility is the activation of the night-time by an external
contact. This contact switches the night-time "ON" and "OFF" inde-
pendently from the settings in the menu.
The night-time command is effective also for flocculation.
13 pH-value compensation of free chlorine
13.1 Total chlorine and combinded chlorine
Indication of the bound chlorine is a function of the TOPAX DX and is
used in combination with measurement of the total chlorine, pH value,
free chlorine and temperature. The type DCM total chlorine measuring
cell delivery a 4...20 mA corresponding to the measuring range.
When measuring the total chlorine quantity and controlling the combined
chlorine, it is necessary that the total chlorine, the free chlorine after the
potentiostatic 3-electrode measurement, the pH value and the temper-
ature are all measured with the same TOPAX DX. In the TOPAX DX, the
measured value for free chlorine is pH-compensated and the pH value is
temperature-compensated. Configuring the total chlorine measurement
in the menu will adjust all functions. Separate setting of the temperature
compensation of the pH value and the pH value compensation of the free
chlorine is not necessary.
13.2 Free chlorine
If total chlorine measurement is not required, the pH value compen-
sation for the free chlorine and the temperature compensation can be
switched on in the service menu of the TOPAX DX. This menu enables
switching the compensation ON and OFF. The value of the free chlorine
is compensated with a correction factor of 35 % per pH value. The tem-
perature compensation of the pH value is compensated with a correction
factor of 1.8 % per °C. The pH value compensation of the free chlorine
is only possible using potentiostatic 3 electrode measurement with the
water sampling station PM or EASYPRO.
13.3 Chlorine dissociation in dependence on the pH value
Please note: when adjusting the free chlorine in accordance with the
DPD method, the pH value of the sample water sinks to c. pH 6.3. The
complete hypochlorous acid released upon the 100 % dissociation of
the chlorine in the sample water is measured and set. The TOPAX DX
has the additional function of “effective chlorine” display, which repre-
sents the true value of the hypochlorous acid which is free for disinfec-
tion in accordance with the pending pH value.
14 Economy mode - DIN-contact and ECO-con-
tact
For the "economy mode" a DIN - contact is defined. The DIN contact is
generally used for the reduction of the recirculation capacity.
DIN 19643 states: “Depending on the operation of the baths and given
compliance with all hygiene parameters, reduced operation is possible.
