Installation and operating manual for WATERFRIEND exclusive MRD-2 Page 8 (44)
Enabling
These connecting terminals are used for interlocking with a filter control unit. Opening the floating contact within
the filter control unit causes interruption of the metering process.
RS-485
These terminals are used for connection to the
Euromatik.net filter control unit. A screened, twisted, 2-core
cable (twisted pair) with a cross-section of at least 0.22 mm2 is required for the connection. (e.g. Li2YCY(TP) 2 x
0.22 mm²). Screening improves the electromagnetic compatibility (EMC). The cable length of the complete bus-
system may not exceed 1200 m. The polarity (DATA+ and DATA) must be observed.
Connecting to EUROMATIK.net
External Touch-Panel
The RS-485 connection terminals are used for data transmission to the EUROMATIK.net. Thus it can be
accessed from the external touch panel of EUROMATIK.net to the water treatment WATERFRIEND MRD-2.
Please note the instruction manual of the EUROMATIK.net.
Connecting to the computer network (optional)
Connection to the Internet is only possible for dosing controls with integrated
web server (option) and is
carried out by the
communication server. The WATERFRIEND MRD-2 is connected using a standard
Ethernet patch cable into the network wall outlet, the powerline adapter, the wireless LAN access point or other
suitable facilities.
After the WATERFRIEND was connected to an active network outlet, the power supply can be turned on. The
web server in WATERFRIEND now searches autonomously for the communication server and logs on to the
database.
7,20
800
721
675
D -2%
D +10%
pH
mV
7,20
800
721
675
D -2%
D +10%
pH
mV
If the "OSF" icon in the monitor is visible (see chart), the WATERFRIEND has logged on to the
communication server.
Network line / patch cable
Network
outlet
LAN
Connection established
OSF
Connected to
communications server
