Lika XAC77, Руководство пользователя

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XC77 • XAC77 - Encoder ATEX
Electrical safety

Turn off power supply before connecting the device;

connect according to explanation in the “5 - Electrical connections” section on page 36;

wires of output signals which are not used must be insulated singularly;

absolute encoders: connect Zero setting and Counting Direction inputs to 0Vdc, if not used;
- to zero set the encoder, connect Zero setting to +Vdc for 100 µs at least, then disconnect
+Vdc; normally voltage must be at 0Vdc; zero set must be performed after Counting Direction;
we suggest performing the zero set when the encoder is in stop;
- Counting Direction: CW increasing count (viewed from shaft side) = connect to 0Vdc; CCW
increasing count = connect to +Vdc;

in compliance with the 2014/30/EU norm on electromagnetic compatibility,
following precautions must be taken:
- before handling and installing, discharge electrical charge from your body and tools
which may come in touch with the device;
- power supply must be stabilized without noise, install EMC filters on device power supply if
needed;
- always use shielded cables (twisted pair cables whenever possible);
- avoid cables runs longer than necessary;
- avoid running the signal cable near high voltage power cables;
- mount the device as far as possible from any capacitive or inductive noise source, shield the
device from noise source if needed;
- to guarantee a correct working of the device, avoid using strong magnets on or near by the
unit;
- minimize noise by connecting the shield and/or the frame to ground. Make sure that ground is
not affected by noise. The connection point to ground can be situated both on the device side
and on the installation side. The best solution to minimize the interference must be carried out
by the user.
Mechanical safety

Install the device following strictly the information in the “6 – Mechanical characteristics”
section on page 46;

mechanical installation has to be carried out with stationary mechanical parts;

do not disassemble the encoder;

do not tool the encoder or its shaft;

delicate electronic equipment: handle with care; do not subject the device and the shaft to
knocks or shocks;

respect the environmental characteristics declared by manufacturer;

unit with hollow shaft: the encoder can be mounted directly on a shaft whose diameter has to
meet the technical characteristics specified in the purchase order and clamped by means of the
collar.
2 - Identification
Device can be identified through the
order code
and the
serial number
printed on the label
applied to its body. Information is listed in the delivery document too. Please always quote the
ordering code and the serial number when reaching Lika Electronic for purchasing spare parts or
needing assistance. For any information on the technical characteristics of the product refer to the
technical catalogue.
MAN XC77_XAC77 I_E 2.16.odt 26 www.lika.it
www.lika.biz