DEPOLOX® 400 M
3. Description
11
EN
3.6
400 M electronics module
3.6.1 Design
Fig. 1
400 M electronics module
A Touchsreen/display
B
Plastic housing with removable housing
cover
C
Motherboard with power supply, terminal
strips, electronic components and relays
D Cable glands
3.6.2 Functions
The electronics module is used for the measu-
rement of auxiliary hygiene parameters in
drinking water applications:
•
Free chlorine, chlorine dioxide, ozone or
potassium permanganate with 3-elec-
trode cell (DEPOLOX® 5 C)
•
Total chlorine measurement with memb-
rane sensor TC3
•
Free chlorine with membrane sensor FC2
•
Chlorine dioxide with membrane sensor
CD7
•
Ozone with membrane sensor OZ7
•
pH value
•
ORP voltage (Redox)
•
Fluoride
•
Temperature
Typical applications:
•
Measurement of chlorine, ORP (Redox)
and pH
•
Monitoring and notification of an alarm if
limit values exceeded
•
Data visualization
•
Data transfer to higher-level systems
For connection to a visualization system, there
is an optional 4-way mA output module, an
RS485 interface and an Ethernet interface with
Modbus TCP and HTTP protocol.
3.6.3 Controller outputs
The electronics module has a dosing contact
for disinfection measurement.
3.6.4 Messages
Alarms, warnings, errrors and messages are
displayed using a colored message symbol (tri-
angle with an exclamation mark).
Red symbol:
alarm or error active
Yellow symbol:
non-acknowledgeable alarms
active
Orange symbol:
maintenance interval or cali-
bration interval has elapsed
Press the symbol and the message window
opens. All active text messages are displayed.
They are acknowledged via ACK button.
3.6.5 Alarms
The electronics module supports up to eight
freely configurable alarms. The alarms can be
assigned to a relay contact and noted on the
color display. At the same time, a message is
displayed in the message window and the
message system is displayed. The number of
available relays depends on the configuration.
A maximum of six alarm relays are possible,
depending on if the controller disinfection
output is used. The alarm relays can be used,
for example, for safety deactivation of dosing
when specific values are exceeded or not rea-
ched.
Each alarm can be assigned the following func-
tions. Multiple assignment is possible:
A
B
C
D
Limit value
Min 1 and Min 2
=>
all measuring
values can be selec-
ted individually
Limit value
Max 1 und Max 2
Digital inputs
=>
1 to 5 can be selec-
ted individually
Error
