Commissioning
22
© Lutz-Jesco GmbH 2020
BA-46020-02-V04
Multi-Channel Controller
TOPAX
®
MC
Operating instructions
100 %
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pH > 1,7 : Cl2
+
H2O � HCIO
+
HCI
pH > 7,5 : HCIO � H
+
+
CIO-
14
(pH)
Fig. 20: Dissociation curve of the effective chlorine
Perform the following work steps:
1.
Working in the main menu under System > Inputs, navigate to the
“Virtual” tab.
2.
Working in the “Virtual” tab, configure the desired calculation of the
effective chlorine and state the following information.
3. Calculation:
Select “effective chlorine” to calculate the effective
chlorine.
4. Free chlorine:
Select the sensor which measures the free chlorine.
5. pH value:
Select the sensor which measures the pH value. If no sen-
sor is present, you can enter a reference value measured once which
can be used for the calculation.
6. Temperature:
A temperature value is required to calculate the effec-
tive chlorine. Select the temperature input which can be used for the
calculation. If no temperature sensor is present, you can set a refer-
ence value measured once which can be used for the calculation.
7. Min-alarm:
Activate or deactivate the minimum alarm and state a
value under which the alarm will be triggered.
8. Max-alarm:
Activate or deactivate the maximum alarm and state a
value over which the alarm will be triggered.
9. Delay:
Set a time delay for the “minimum and maximum alarm”.
ü
Configuration of the calculation of the effective chlorine
completed.
8.2.1.6 Digital inputs
You can use up to 8 digital inputs to evaluate switching statuses and to
detect them as alarm message which are to be documented in the log-
book.
Perform the following work steps:
1.
In the main menu under System > Inputs, navigate to the “Digital”
tab.
2.
In the “Digital” tab, configure the inputs and state the following infor-
mation.
3. Action:
Choose between “OK = open” (N.O., working contact) or “OK
= contact” (N.C., break contact).
4. Function:
Select a function from Tab. 23 “Functions of the individual
controllers” on page 19 depending on the desired reaction of the
device to the input.
ü
Configuration of the digital inputs completed.
Function
Reaction
Off
The switching of the contact has no influence
on the measurement or control.
Setpoint changeover
You can use the contact to switch between
reference sets.
Measuring water
shortage
All controller outputs will be switched off.
External stop
All controller outputs will be switched off.
Pre-alarm 1 – 4
Only display as an alarm message. Nothing is
switched off.
Main alarm 1 – 4
The appendant controller output is switched
off. The other outputs remain unaffected.
Others
You can assign an individual name to this
digital input. The name is displayed in the
alarm messages during switching the
contacts.
Tab. 24: Functions digital inputs
8.2.2 Outputs
Depending on the equipment, you can connect a range of actors to the
device and actuate them. Make sure that you actuate the actor with the
correct signal type and select an appropriate output module with the con-
figuration. An alarm relay, four analogue outputs and the possibility of
connecting external LEDs (e.g. for water sampling stations) are always
available.
8.2.2.1 Controller outputs
You can configure and use up to four controllers.
Pre-conditions for actions:
ü
You have used the configuration assistant to assign an input and a
control function to a controller (see section “Configuration assistant”
on page 19).
