User manual

UNIVERSAL SENSOR SWITCHING MODULE
Instruction manual Page 7
Released 09/2006 Rights reserved for change in technical data! HYGROSENS INSTRUMENTS GmbH Postfach 1054 D-79839 Löffingen Tel: [phone] Fax: [phone]
5.4.1 Operating voltage
12V/24V-AC/DC Model:
The operating voltage is
connected at the terminals
“SUPPLY VOLTAGE“. The
rating of nominal voltage is
mentioned on the PCB,
under the voltage
connection and also on the
relay and must be
maintained as per
specifications on the data
sheet in order to ensure an
error free functioning. A too
high operating voltage can
lead to damage of the
device. Extremely low or
unstable operating voltage
leads to malfunctioning.
230V AC model:
The connection with mains
power supply should be
done by only trained and
authorized persons. The
electrical connection is
done through the 6-pin plug
connector as per pin
configuration. The device
can be operated only with
230V AC supply.
5.4.2 Load circuit
The safety of load circuit, if required, should be taken care of through some external
protection arrangement. (max. 5A). To switch higher currents, corresponding switching
elements should be used.
The changeover contacts of both the relays are potential free and are terminated at
the connection socket. The connection to load is done as per the connector
configuration. The NO contact of the relay is provided with a 390V varistor for surge
suppression.