SmartBox
®
1 / SmartBox
®
2 / SmartBox
®
3
6 / 20
part no. 28 100 57 f
ELECTRICAL INSTALLATION
Connection of supply voltage:
Voltage: 230 V AC 50 Hz
Connection: Terminals
N
+
L
to the
display unit (cable not
included in the delivery)
Connection line between display unit and level probe
Voltage
Probe supply 20 V DC
Connection
Level probe connection cable
+
–
SmartBox
Level probe - terminals
1
2
Tank 1
Safety precautions for electrical components
The functions and operating safety of the device are guaranteed only under the
climatic conditions that are specified in TECHNICAL DATA. If the device is transported from a
cold to a warm environment, condensation may cause the device to malfunction or may even
destroy the device. Because of this, you must ensure that the device has acclimatised to the
ambient temperature before using it.
If you have any doubts that the device can be operated safely, do not operate it.
Your safety may be adversely affected by the device, if for example:
•
it is obviously damaged
•
it no longer works as specified
•
it has been stored in unsuitable conditions for some time,
if in doubt, send the device to the manufacturer for repair or maintenance
Observe the safety precautions and the assembly and operating instructions of
connected devices.
Connection of the relay contacts at the indicator SmartBox
®
2 und SmartBox
®
3
The indicator SmartBox
®
2 has two relay contact pairs (SmartBox
®
3
one relay) for the
connection of external control circuits or for activating external alarm or signal devices.
In case of failure of the unit and if the fill level (or optionally the temperature) is above / below
the selected limit, the contacts of relay terminals
6 + 7
and
9 + 10
are closed. Contacts of
relay terminals
5 + 6
and
8 + 9
are open - see the legend on the PCB in the unit.
Switching voltage max. 250 V AC
Switching current max. 3,5 A
Connection
normally open (NO) normally closed (NC)
only SmartBox
®
Relay 1
terminals
5 + 6
terminals
6 + 7
2
Relay 2
terminals
8 + 9
terminals
9 + 10
2 + 3
Connection of interface to SmartBox
®
4, SmartBox
®
5
The measured values can be transmitted to the SmartBox
®
4, SmartBox
®
5 set via the
integrated interface “SERIAL LINK OUTPUT” (terminals
3 + 4)
.
