STIEBEL ELTRON SOM 10 - Manual (Page 7)

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2.3 Data communication / Bus
The controller is equipped with the VBus ® for data
transfer with and energy supply to external modules.
The connection is carried out at the two terminals
marked VBus and GND (any polarity). One or more
VBus
® modules can be connected via this data bus,
such as:
• GA3 Large Display module /
Smart Display SD3
• AM1 Alarm module
• DL2 Datalogger
• EM Extension module
Furthermore, the controller can be connected to a
PC via the VBus
® / USB or VBus ® / LAN interface adap-
ter (not included with the SOM 10). With the Service-
Center Software (RSC), measured values can be read,
processed and visualized. The software allows easier
paramatrisation and function control of the system.
Connect the FlowRotor to the input marked Flow-
Rotor.
Connect the analog Grundfos Direct Sensors™
to the inputs GDSA1 and GDSA2.
The terminals S13 to S15 can be used as either im-
pulse inputs for V40 flowmeters or as inputs for FS08
flow switches
V40 flowmeters can be connected to the terminals
S13 / V40 to S15 / V40 and GND (either polarity).
Connect the irradiation sensor CS10 to the termi-
nals CS10 and GND with correct polarity. To do so,
connect the cable marked GND to the GND com-
mon terminal block, the cable marked CS to the ter-
minal marked CS10.
The terminals marked PWM are control outputs
for high-efficiency pumps.
In the In-/Outputs menu, relays can be allocated to
the PWM outputs.
Connect the digital Grundfos Direct Sensors™
to the GDSD1 and GDSD2 inputs. Note:
For more information about accessories, see
page 80
The controller is supplied with power via a power
supply cable. The power supply of the device must be
100 ... 240 V~ (50 ... 60Hz).
The power supply connection is at the terminals:
Neutral conductor N
Conductor L
Conductor L' (L' is not connected with the power
supply cable. L' is a fused contact permanently carry-
ing voltage)
Protective grounging conductor (common termi-
nal block)
WARNING! Electric shock!
L‘ is a fused contact permanently
carrying voltage
Î Always disconnect the con-
troller from power supply
before opening the housing!