4
80994B_MHW_GTF-Xtra_05-2016_ENG
This section contains the instructions needed for
correct installation of GTF controllers 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 GTF controllers 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 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
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
GTF
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
Install the overvoltage protector module enclosed with
the product (see installation section).
- Moreover, the applications with solid-state units require a safe-
ty automatic switch to section the load power line.
To ensure maximum reliability, the device must be correctly
installed in the panel in such a way as to obtain adequate heat
exchange between the heat sink and the surrounding air under
conditions of natural convection..
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.
2 • INSTALLATION AND CONNECTION
