SME11 - SME21 - SME51
5.2 Reference “R”
With ordering code "R" and in combination with
LKM-1309.
6 Maintenance
The magnetic measurement system does not need
any particular maintenance; please always consider
it is a delicate electronic equipment and therefore it
must be handled with care. From time to time we
recommend the following operations:
•
Check the gap between sensor and magnetic
scale along the measuring length. Wear of the
machine may increase the tolerances.
•
The surface of the magnetic scale should be
cleaned periodically using a soft cloth to remove
dust, chips, moisture etc.
7 Troubleshooting
The following list shows some typical errors that
occur during installation and operation of the
magnetic measurement system.
Fault:
The system does not work (no pulse output).
Possible cause:
•
The scale or sensor has been mounted
incorrectly (the active part of the scale does not
match the sensor active side).
•
A magnetic piece or scale is in between the
sensor and the scale. Only non-magnetic
materials are allowed between sensor and scale.
•
The sensor touches the scale because tolerance
gap between sensor and scale is not respected.
Check the sensor active side if damaged.
•
The sensor has been damaged by short circuit or
wrong connection.
Fault:
The measured values are inaccurate.
Possible cause:
•
The gap between sensor and scale is not
respected along the whole measurement length.
•
The connection cable runs near to high voltage
cable or shield is not connected correctly. See
section “4 - Electrical connections“.
•
The max. counting frequency of your receiving
device is too low.
•
A section of the magnetic scale has been
damaged mechanically or magnetically along
the measuring length
•
The measuring error is caused by torsion of the
machine structure. Check parallelism and
symmetry of machine movement.
Release
Description
1.1
1st issue
1.2
Revised edition
1.3
Correction of section 3, revised edition
1.4
Add M12 connector (section 4)
Lika Electronic
Via S. Lorenzo, 25 - 36010 Carrè (VI) - Italy
Tel. +39 0445 806600
Fax +39 0445 806699
Italy : eMail [email protected] - www.lika.it
World : eMail [email protected] - www.lika.biz
MAN SMEx1 I_E 1.4.odt
8
www.lika.it
www.lika.biz