4
80999D_MHW_GFW 400-600A_07-2020
_ENG
2 • INSTALLATION AND CONNECTION
This section contains the instructions needed for correct
installation of GFW modular power controller on the machine/
host system control panel and for correct connection of the
power supply, inputs, outputs and interfaces.
CAREFULLY READ THE FOLLOWING WARNINGS
BEFORE INSTALLING THE INSTRUMENT!
Disregard of such warnings could create electrical
safety and electromagnetic compatibility problems, as
well as void the warranty.
2.1
e
lectrical
Power
suPPly
• The controller DOES NOT have an On/Off switch: the user must install
switch/isolator conforming to safety requisites (CE mark) to cut off
the power supply up-line of the controller.
The switch must be installed in the immediate vicinity of the controller
in easy reach of the operator.
A single switch can be used for multiple devices.
• The earth connection must be made with a specific lead
• If the product is used in applications with risk of harm to
persons or damage to machines or materials, it MUST
be equipped with auxiliary alarm devices.
It is advisable to provide the ability to check for tripped alarms
during regular operation.
DO NOT install the product in rooms with hazardous (inflammable
or explosive) atmosphere; it may be connected to elements that
operated in such atmosphere only by means of appropriate interfaces
that conform to current safety standards.
2.2
n
otes
on
electrical
safety
anD
electromaGnetic
comPatibility
:
2.2.1 CE MARKING: EMC
(electromagnetic compatibility) conformity
in compliance with Directive 2014/30/EU and following modifications.
Series GFW are mainly intended for industrial use, installed on panels
or control panels of production process machines or systems.
For purposes of electromagnetic compatibility, the most restrictive
generic standards have been adopted, as shown on the table.
2.2.2 LV (low voltage) conformity
Under Directive 2014/35/EU.
EMC compliance has been verified with respect to the
information in Tables 1 and 2.
2.3
r
ecommenDations
for
c
orrect
i
nstallation
for
PurPoses
of
emc
2.3.1 2.3.1 Instrument power supply
• The power supply for the electronic instrumentation on the panels
must always come directly from a cut-off device with fuse for the
instrument part.
• Electronic instrumentation and electromechanical power devices such
as relays, contactors, solenoids, etc., MUST ALWAYS be powered by
separate lines.
• When the power supply line of electronic instruments is heavily
disturbed by switching of thyristor power groups or by motors, you
should use an isolation transformer only for the controllers, grounding
its sheathing.
• It is important for the system to be well-grounded:
- Voltage between neutral and ground must not be > 1V
- Ohmic resistance must be < 6Ω;
• If the grid voltage is highly unstable, use a voltage stabilizer.
• In proximity of high-frequency generators or arc welders, use adequate
grid filters.
• The power supply lines must be separate from instrument input and
output lines.
• Supply from Class II or from limited energy source
2.3.2 Input and output connections
Before connecting or disconnecting any connection, always check that
the power and control cables are isolated from voltage.
Appropriate devices must be provided: fuses or automatic switches to
protect power lines.
The fuses present in the module function solely as a protection for the
GFW semiconductors.
• Connected circuits must be ully isolated from external electrical noise.
• To connect analog inputs, strain gauges, linears, (TC, RTD), you have
to:
- physically separate the input cables from those of the power supply,
outputs, and power connections.
- for inputs use braided and shielded cables, with sheathing grounded
at a single point.
2.3.3 Installation notes
Use the extra-rapid fuse indicated in the catalogue according to the
connection example equipped.
- Moreover, the applications with solid-state units require a safety
automatic switch to section the load power line.
To ensure the high reliability of the device, it is necessary to install it
properly inside the panel so to obtain an adequate thermal exchange. Fit
the device vertically (maximum angle 10° to the vertical axis) see figure 3
• Vertical distance between a device and the panel wall >100mm
• Horizontal distance between a device and the panel wall at last 10mm
• Vertical distance between a device and the next one at last 300mm.
• Horizontal distance between a device and the next one at last 10mm.
Check that the cable holder runners do not reduce these distances, in
this case fit the cantilever units opposite the panel so that the air can flow
Содержание GFW 400A
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