Omron K3MA-J User Manual page 8

Noise prevention
(1) Install the product as far as possible from devices that generate strong high-frequency fields (such
as high-frequency welders or sewing machines) or surges.
(2) Attach surge absorbers or noise filters to nearby devices that generate noise (particularly, motors,
transformers, solenoids, magnet coils, and other devices that have a high inductance component).
However, in the case of K3MA-L, do not connect the surge absorber to the input unit for
temperature sensors.
(3) To prevent inductive noise, separate the terminal block wiring for the product from high-voltage or
high-current power lines. Do not route the wiring for the product in parallel with or tie it in a
bundle with power lines.
Use of separate wiring ducts or shielded cables will also be effective for noise prevention.
<Examples of noise prevention schemes>
(4) When using a power supply noise filter, check that the filter is suitable for the supply voltage and
current ratings and then install it as close as possible to the product.
(5) Televisions, radios, or other wireless devices may cause reception interference if placed near the
product.
VI