en-US/C
A
5
WARNING!
Electric shock!
Upon opening the housing, live parts
are exposed.
Î
Always disconnect the con-
troller from power supply
before opening the housing!
WARNING!
Electric shock!
L' is a fused contact permanently car-
rying voltage.
Î
Always disconnect the con-
troller from power supply
before opening the housing!
Note
The connection depends on the system lay-
out selected, see chap. „2.6 System layouts“
on page 7.
Note
For more details about initial commissioning,
see chap. 5, page 39.
Temp. Sensor
Pt1000
T4A
100 ... 240 V~
50-60 Hz
1 (1) A (100 ... 240) V~
2 (1) A (100 ... 240) V~
R1-R3
R4
L
R3
R2
R1
GND
S1
S2
S3
S4
S5
VBus
N
R4
V40
L'
IP 20
CU 72102083.01
750 McMurray Road
Waterloo, ON N2V 2G5
SCU345
The controller is supplied with power via a power
supply cable. The power supply of the device must be
100 ... 240 V~ (50 ... 60 Hz).
The controller is equipped with 4 relays in total to
which loads such as pumps, valves, etc. can be con-
nected:
• The relays R1 ... R3 are semiconductor relays,
designed for pump speed control:
Conductor R1... R3
Neutral conductor N
Protective conductor
• Relay 4 is a standard relay
Conductor R4
Neutral conductor N
Protective conductor
Connect the temperature sensors (S1 to S5) to
the corresponding terminals with either polarity:
S1 = Sensor 1 (collector sensor)
S2 = Sensor 2 (e. g. tank sensor bottom)
S3 = Sensor 3 (e. g. collector sensor collector 2)
S4 = Sensor 4 (e. g. tank sensor tank 2)
S5 = Sensor 5 (e. g. tank sensor tank 3)
A V40 flowmeter can be connected to the terminals
V40 and GND (either polarity).
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 conductor
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” (either polarity). One
or more VBus
®
modules, depending on their current
consumption and the current supply of the controller,
can be connected via this data bus, such as:
• Smart Display SD3
• AM1 Alarm module
• DL2 Datalogger
Furthermore, the controller can be connected to a
PC via the VBus
®
/USB or VBus
®
/LAN interface adapt-
er (not included with the SCU345).
With the ServiceCenter Software (RSC), measured
values can be read, processed and visualized.
Note
For more information about accessories, see
p. 68.
Note
Connecting the device to the power supply
must always be the last step of the installa-
tion!
Summary of Contents for SCU345
Page 71: ...en US CA 71 Notes ...
