LINEPULS & LINECOD catalogue 2016 in English

LINEPULS • LINECOD
Technical information
This is the maximum shock acceleration that the encoder is able to withstand without inducing
a mechanical weakness and losing the performances specified in the datasheet.
Shock test is performed in compliance with the international standard IEC EN 60068-2-27.
Maximum values are permissible providing that the encoder is installed properly, following
carefully the instructions given in the technical documentation and complying with the
mounting tolerances indicated by the manufacturer. Any mechanical shock and vibration
exceeding the stated values may cause damage to the encoder. Please further consider that
an encoder is a delicate electronic equipment, for this reason it should not be subjected to
excessive mechanical shock and vibration during both installation and operation.
Shock
This is the maximum sustained vibration that the encoder is able to withstand without inducing
a mechanical weakness and losing the performances specified in the datasheet. Vibration
test is performed in compliance with the international standard IEC EN 60068-2-6. Maximum
values are permissible providing that the encoder is installed properly, following carefully the
instructions given in the technical documentation and complying with the mounting tolerances
indicated by the manufacturer. Any mechanical shock and vibration exceeding the stated
values may cause damage to the encoder. Please further consider that an encoder is a delicate
electronic equipment, for this reason it should not be subjected to excessive mechanical shock
and vibration during both installation and operation.
Vibration
Most of the outputs (refer to the section “Output circuits”) are protected against shortcircuit.
Short-circuit protection is intended to keep the encoder electronics safe from accidental
and temporary connection of one or more outputs either to 0Vdc, to +Vdc or to each
other, provided that the power voltage is connected properly. If such a situation arises, no
damage is caused to the circuitry, nevertheless it is compulsory to re-establish immediately
the proper connection. Refer to the “Protection” information in the “Electrical Specifications”
of the datasheet.
Short-circuit protection
Most of the Lika encoder versions (except some +5Vdc power supply versions; refer to the
section “Output circuits”) implement the reverse polarity protection to prevent the internal
electronics from being damaged in case the polarity is accidentally reversed on the connection.
Refer to the “Protection” information in the “Electrical Specifications” of the datasheet.
Reverse polarity protection
IP -International Protection- code as defined in the international standard IEC 60529 classifies
the degrees of protection from solid objects and accidental contacts as well as from liquids
provided by the enclosures of any electrical equipment. The protection rate is defined by the IP
abbreviation followed by a two-digit number. The first digit indicates the level of protection
of the enclosure against particles and solid objects; while the second digit indicates the level
of protection against liquids. IP ratings are summarized in the table below.
IP code
IP first digit – Protection against solid objects
For instance, if a product provides IP67-rated protection, this means that it is totally protected
against dust -first digit: 6- and protected against immersion between a depth of 150 mm (6”)
and 1000 mm (40”) -second digit: 7.
IP second digit – Protection against liquids
0 No protection 0 No protection
1 Protected against solid objects 50 mm (2”) or greater 1 Protected against vertically dripping water
2 Protected against solid objects 12 mm (0.47”) or greater 2 Protected against vertically dripping water, when tilted 15 degrees
3 Protected against solid objects 2.5 mm (0.1”) or greater 3 Protected against water spraying at an angle up to 60 degrees
4 Protected against solid objects 1 mm (0.04”) or greater 4 Protected against water splashing from any direction
5 Protected against dust limited ingress 5 Protected against jets of water from any directions
6 Totally protected against dust 6 Protected against powerful jets of water from any directions
Protected against immersion between a depth of 150 mm (6”) and
7
1000 mm (40”)
8 Protected against continuous submersion
18