M.DRIVE.DB-21.GEN.ENG
Ed. 2021 Rev.04
Pag. 4 di 31
1SAFETY AND INSTALLATION
1.1 SAFETY CONSIDERATION AND INSTALLATION CONSTRAINS
It is important to ensure that cable and connection are carried out by a qualified technician. Wrong
connections can cause damage to the device or generate dangerous situations for the user.
Dangerous voltages can be found inside the drive and on the external clamps, therefore
maximum attention should be paid during all phases of installation and/or maintenance so
that people are not placed in dangerous situations.
►After switching off the drive, the internal components and the output connectors can still be powered for
several seconds. Before doing anything, check with a Voltmeter that there are no dangerous voltages
on the external clamps.
►Between the control signals and the main power supply the insulation is guaranteed only for functional
purposes and not for user safety.
►All the logic signals, besides the power lines, must be protected against the user direct contact.
►During installation or normal operation, do not use damaged cables or spoiled ones.
►Connect to the ground all the shields and the ground cables. Avoid untidy or twisted cables.
►The converter must be installed in vertical position into the cabinet. Ventilation conditions and surrounding
atmosphere must be settled in a way that the converter cannot work without nominal temperature
range (0÷40°C).
►A 100mm clearance area must be considered under the drives and 10mm on the sides in order to
guarantee a high cooling efficiency to the fan.
►The converter heat sink can reach high temperature during normal operations. Avoid direct contacts and
remove inflammable components into the closeness of the converter.
►Before proceeding with the setup of the device it is necessary to check the ground connections, network
voltage and the correct connection (according to this manual) of the control signal connections
1.2 EMC ADVICES
It is advisable to install the power parts of the motor control unit (drive, transformer, filters and resistances) in
metallic divisions separate from those assigned to command and control devices. If the power supplies of
the power groups are the same as the control apparatus, they should be connected in the same position
(entrance point of the electronic device) in a star configuration.
External line filters are recommended (ie: Arctoronics F.LL.D3.016A.BN.R1 for 10A)
It is advisable to maintain maximum separation between the lay out of power and signal cables, using as an
example, separate canalisations (with a distance of at least 30cm one from the other) when laying cables.
Where it is necessary to intersect the lay out between signal cables and power cables, it is better that the
intersections are made with cross angles of 90.
An insulation transformer on the power line decoupling the drives from the grid is always a high efficiency
EMC barrier.
