9
ENG
“FCR3 three-phase controller” +030222150 - rel. 1.3 - 12.01.2021
3. INSTALLATION
To install the controller, proceed as follows, with reference to the
connection diagrams shown at the end of the manual.
Warning
: 400 Vac mains voltage present on the board.
The controller can be installed in outside environments in accordance
with the warnings shown below:
•
Connect a type C circuit breaker on the power supply line sized for 1.1
times the rated current.
•
Program the device: for a more detailed description see the chapter
“Programming the controller”.
•
Connect the load: the load should only be connected after having
programmed the controller. Carefully evaluate the maximum current
draw, as indicated in the “technical specifi cations”. The load can be
made up of multiple fans in parallel, as long as the maximum current is
not exceeded. Shielded connection cables must be used.
•
Connect the serial network: the controller is fi tted with two identical
connectors. Always use shielded cable, with the shield connected to
GND.
Warning
: The controller must be installed so as to ensure normal
cooling, according to the fl ow of air. Normally, if there are no
cooling fans, it is installed vertically, with the cable outlets downwards.
The temperature of the surface the control is mounted on must not
exceed 70° C.
Specifi ed ingress protection is guaranteed only if the following
precautions are heeded:
•
make sure that the cable glands are fully tightened and closed.
•
only use one suitably-sized cable in each cable gland
•
pass the cable through the cable gland, ensuring tightness
•
if installation requires cables with a smaller diameter than the hole
made or more than one cable in the same cable gland, it is the installer’s
responsibility to guarantee the appropriate ingress protection; for
example, using a sheath to increase the thickness or to hold the cables
together, making sure there are no gaps.
The maximum length of the connection cables is 10 m except where
specifi ed otherwise.
Size the cross-section of the power wires based on the current input of
the load and the length of the cables.
If a shielded cable is used to connect the load,
both ends of the shield
should be earthed
.
To ensure compliance with safety standards, the electrical system must
be fi tted with a suitable switch or disconnect device (compliant with
standards IEC 60947-1 and IEC 60947-3), located near the device.
If the device is used in a manner that is not specifi ed by the manufacturer,
the rated protection may be compromised and the device may be
seriously damaged.
Avoid assembling the controllers in environments with the following
characteristics:
•
relative humidity greater than 90% non-condensing;
•
strong vibrations or knocks;
•
exposure to continuous water sprays;
•
exposure to aggressive or pollutant atmospheres (e.g. sulphur and
ammonia fumes, saline mist, smoke) so as to avoid corrosion and/or
oxidation;
•
strong magnetic and/or radio frequency interference (for example,
near transmitting antennae).
Observe the following warnings when connecting the controllers:
Incorrect connection of the power supply may seriously damage the
system.
Use cable ends suitable for the corresponding terminals.
Loosen each screw and insert the cable ends, then tighten the screws
and slightly tug the cables to check that they are suffi
ciently tight.
To tighten the screws, do not use electric screwdrivers, or if necessary
adjust to a torque of less than 50 Ncm. If spring terminals are used,
compress the spring using a screwdriver, insert the stripped wire then
release the spring and slightly tug the cables to check that they are
suffi
ciently tight.
Separate as much as possible (at least 3 cm) the signal cables from the
cables carrying inductive loads and power cables to avoid possible
electromagnetic disturbance.
Never lay power cables (including the electrical cables) and probe signal
cables in the same conduits.
Cleaning the device.
When cleaning the device do not use ethyl alcohol, hydrocarbons (petrol),
ammonia and derivatives. Use neutral detergents and water.