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2 - INSTALLATION
• It is the responsibility of the owner or user to
ensure
that
the
maintenance of the drive and its options comply with
legislation relating to the safety of people and equipment
and with the regulations in force in the country of use.
• Before carrying out any work, disconnect and lock the
drive power supply. For the single-phase range, wait 2
minutes to make sure that the capacitors have discharged.
• After connection, ensure that the seals are firmly in place,
and that the screws and cable glands are watertight to
ensure IP 65 protection. Tightening torque for cover
screws : 5 Nm.
• Holes are provided at the lowest points of the enclosure,
depending on the operating position, to drain off any
moisture that may have accumulated inside during
cooling of the machine. In conditions which encourage
the formation of condensation, it is advisable to leave the
drain holes permanently open.
• When the cover is open, the VARMECA 30 degree of
protection is IP10. Any work should only be carried out by
experienced, qualified personnel.
3 - CONNECTIONS
• All connection work must be performed in
accordance with the laws in force in the country
where the drive is installed. This includes earthing to
ensure that no directly accessible part of the drive can be
at the mains voltage or any other voltage which may be
dangerous.
• The voltages on the cables or connections of the mains
supply, the motor, the braking resistor or the filter may
cause fatal electric shocks. Contact must be avoided in all
circumstances.
• The drive must be supplied via a circuit-breaking device
so that it can be powered down safely.
• The drive contains capacitors which remain charged at a
fatal voltage even after the power supply has been cut off.
• Wait 2 minutes after powering down the drive before
removing the protection devices.
• The drive power supply must be protected against
overloads and short-circuits.
• It is vital to respect the rating of protection devices.
• Connection with copper conductor only.
• Check that the voltage and current of the drive, the motor
and the mains supply are compatible.
• After the drive has been operating, the heatsink or the
braking resistors may be very hot (avoid touching them).
Installation and maintenance - VARMECA 30
3776 en - 2017.10 / n
INSTALLATION
installation,
operation
and
2.1 - General
The VARMECA 30 motor is fitted to the machine like a standard
motor, with flange or foot mounting.
The motor ventilation cools the whole assembly. Make sure
that the ventilation air inlet is free of obstruction.
The positions of the potentiometer/cable gland supports are
specified at the time of ordering. However they may be reversed
if necessary.
3.1 - Wiring precautions
• When the VARMECA 30 is controlled remotely, avoid parallel
routing of power cables and control cables.
• All remote control cables must be shielded and have a cross-
section between 0.22 mm
and 1 mm
2
connected to earth at both ends.
• Check that the different earth points are actually at the same
voltage.
• Incorporate a bend where the cables enter the cable glands
so that water cannot penetrate the terminal box.
• Tighten the cable gland firmly.
Cable in downward position
• The VARMECA 30 has a positive logic configuration.
Using a drive with a control system which has a
different control logic may cause unwanted starting
of the motor.
• The control circuits in the drive are isolated from the
power circuits by single insulation (IEC 664-1). The
installer must ensure that the external control circuits are
isolated against any human contact.
• If the control circuits need to be connected to circuits
conforming to SELV safety requirements, additional
insulation must be inserted to maintain the SELV
classification.
. The shielding should be
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