SmartBox
®
4 / SmartBox
®
4
PRO
part no. 28 400 57 c
7 / 32
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)
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 relay contacts at the indicator SmartBox
®
4
The Indicator SmartBox
®
4 has two relay contact pairs 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 (and optionally temperature) is above / below
the selected limit, the contacts of relay terminals
7 + 8
are closed, or
9 + 10
are open - see
the legend on the PCB in the unit.
Switching voltage
max. 250 V AC
Switching current
max. 3,5 A
Switching contact normally closed (NC)
normally opened (NO)
Relay
Terminals
7 + 8
Terminals
9 + 10
SmartBox
®
4
SmartBox
®
4 PRO
