CIRCUTOR MDC-20 - Manual (Page 12)

MDC-20
Page 12 of 58 User Manual
3 UNIT INSTALLATION
3.1 Prior recommendations
Unit installation and maintenance must only be carried out by authorised and
qualified personnel. Before carrying out any maintenance work, make sure you
disconnect the unit's power supply.
Those people who handle the unit must follow the safety measures set out in
the EN standards and the electrical code of the country where it is being used,
using the necessary personal protective equipment and heeding the various
warnings indicated in the user manual.
The unit must be connected to the power circuit protected with GL or M type
fuses, in accordance with IEC 269, with gauges ranging from 0.5 to 1 A.
The unit must be connected to the mains with a magneto-thermal or equivalent
switch, so that it can be disconnected. The power supply cable must have a
minimum cross-section of 1 mm².
Check the earth connection before connecting the unit to the power supply.
Any fault in the earth connection might cause a risk of electrocution to the user
and damage to the unit in case of lightning or other transients.
3.2 Installation location
The unit must be installed in an environment where the environmental conditions indicated in
the technical features section are respected.
3.3 Wiring diagrams
Fig.3-1 . –Basic connection diagram with RS-485 communications and illustration of
input activation contact I
N4