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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
MARCATURA CE: EMC
(electromagnetic compatibility) conformity
in compliance with Directive 89/336/CEE 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
in compliance with Directive 2006/95/CE.
EMC conformity has been verified with the
connections indicated on table 1.
4
2 • INSTALLATION AND CONNECTION
:
2.3
R
ecommenDations for
for PurPoses of
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 outside circuits must be doubly isolated.
• 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.
- 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 vertically without any obstacles.
• dissipation of device thermal power with effects on installation
room temperature.
c
i
orrect
nstallation
EMC
80962_MHW_GFW_12-2011_ENG
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