SMK - SML – SMH
MAN SMK-SML-SMH I_E 1.0
Pag.5
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User manual
SMK, SML, SMH
Chapters
1 Safety summary
2 Identification
3 Installation
4 Output signals
5 Electrical connections
6 Dimensional drawing
7 Maintenance
8 Troubleshooting
Description
This manual describes products of the SMK, SML,
SMH series. The purpose of these sensors is to
measure linear or angular displacements on
industrial machines and automation systems. The
measurement system includes a magnetic tape and
a magnetic sensor. The tape has alternating
magnetic north/south poles are magnetized at a
certain distance called the pole pitch. As the sensor
is moved along the magnetic tape (or magnetic
ring), it detects the displacement and produces an
output signal equivalent to that of an incremental
encoder or a linear scale. The flexibility of the tape
allows it to be used for both linear and angular
applications.
The sensor has to be matched with the appropriated
magnetic tape (see chap. 2.1).
1 - Safety summary
We strongly recommend carefully reading this user
manual and following the installation guidelines:
•
Sensor head should be installed as close as
possible to your control unit.
•
Always use shielded cables and twisted if
possible.
•
Avoid running the sensor cable near high
voltage power cables (e.g. drive cables).
•
Install EMC filters on sensor power supply if
needed.
•
Avoid mounting sensor head near capacitive or
inductive noise sources such as relays, motors,
and switching power supplies.
Connect according to the supplied pin-out.
2 - Identification
The sensor can be identified by the label's data
(ordering code, serial number). This information is
listed in the delivery document. All technical
features according to the ordering code are shown
on the catalogue.
2.1 Sensor and tape combinations
Sensor
Magnetic tape
SMK
MT50
SML
MT32
SMH
MT40
3 - Installation
Install the product according to the protection level
provided.
Protect the system against knocks, friction, solvents,
temperatures under -10°C (14°F) and over +70°C
(+158°F).
Be sure that the system is mounted where hard or
sharp objects (e.g. metal chips) do not come into
contact with the magnetic scale and the bottom of
the sensor head. If these conditions cannot be
avoided provide a wiper or pressurized air.
3.1 Mounting tolerances
Sensore
Gap
Sensor/Magnetic tape
(D)
SMK
4,0 mm
SML
2,0 mm
SMH
2,0 mm