9.2.3.2 Relays connection
The relay is usable with the specifications
described below. Working voltage: up
to 30Vac or 60Vdc. Current: 1A max. Use
suitable cable sections with the following
characteristics: from 0.25mm² (24AWG) up
to 1.5mm² (16AWG).
Due to the absence of polarity, both terminals of
the same relay can be used equally with either
alternating or continuous current.
The clean contact is NO (normally open).
9.2.3.3 Wiper connection
The wiper can be operated remotely using an NO
(normally open) dry contact. Connect the clean
contact cables to the connector of relay, alarms, serial
line, factory default (J11, terminal 5/terminal 6, 8.4
Connector board description, page 21).
For the version with built-in wiper, connect the wiring
to the sensor connectors and the wiper power supply
line connectors (J2, J5, 8.3 Control board description,
page 21).
26
9.3 Ground connection
CAUTION! The external equipotential
connections must be set up through the
eyelet on the outside of the product. Do not
use as a protective terminal.
Fig. 20
The unit must be connected with an equipotential
bonding to the earth with an external cable having
the following minimum section: 4mm² (11AWG).
Connect the earth equipotential bonding cable with
the provided eyelet. Suitable for cables:from 4mm²
up to 6mm².
Fasten the eyelet using the screw (M5) and the
toothed washer supplied.
Characteristics of the screw (M5)
• Material: A4 Class 70
• Screw head: ISO 4762
• Length: 12mm (0.47in)
The equipotential earth connection is necessary for
carrying out additional connections required by law.
MNVCMVXTHD_1813_EN