Sanyo Denki SANMOTION 3E S, Instruction Manual, Page: 120 / 488

3. Installation
3-13
3.3 Linear motor
3.3.1 Precautions on linear motor installation
When installing, please be sure to protect the following precautions.
■
Prevention of impairment
Strong magnet is mounted in magnet rail, so those who is wearing medical equipment, such as
pacemakers, or being implanted magnetic metal into the body, make sure to keep 0.5m or over away
from linear motor, and do not perform unpacking. Severe physical impairment can occur due to
equipment failure or strong magnetic attraction of magnetic metal. So pay careful attention to not only
operators but also people around work area.
Magnet rail structure is such that magnet is adhered on the surface of back iron which has magnetic
body.
There is almost no magnetic field on the mounting surface of back iron, and magnetic attraction is weak.
(Less than one tenth the own weight)
However, please also be aware that powerful magnetic field generates on the surface of magnet, and
strong magnetic attractive force generates between magnetic bodies. Coil is not mounting magnet in,
however, consisting of magnetic substances.
Magnet rail body is wrapped in plastic bag, and protection material (styrene foam) whose thickness is
approximately 20mm is enclosed on the surface of magnet to reduce magnetic attraction.
Do not remove the protection material until just before mounting process.
Operators shall not wear any rings, watches, or magnetic cards.
Putting magnetic storage media, such as magnetic card or floppy disk, and PC close to magnet rail can
result in damages to the data or equipment failures.
Never touch edge of magnet rail stainless-steel cover or coil with bare hands. Failure to do so can result
in injuries. Make sure to protect your hands with gloves to perform installation. However, please also
make sure not to use gloves when operating motor to prevent operators being caught in.
Back iron (magnetic substances)
Magnetic attraction is weak on the
mounting surface
Magnet
Magnetic attraction is strong on
the surface
Coil
Consisting of magnetic substances
Packing of single magnet rail
Protection material enclosed on the surface
of magnet.
Plastic bag
Magnet rail
Edge
Stainless-steel cover
Magnet rail