Omron K3HB, Technical Communications User'S Manual

Page: 10 / 147

xi
(1) Do not use the product in the following locations.
• Locations subject to direct radiant heat from heating equipment
• Locations where the product may come into contact with water or oil
• Locations subject to direct sunlight
• Locations where dust or corrosive gases (in particular, sulfuric or ammonia gas)
are present
• Locations subject to extreme temperature changes
• Locations where icing or condensation may occur
• Locations subject to excessive shocks or vibration
(2) Do not use the product in locations subject to temperatures or humidity levels
outside the specified ranges or in locations prone to condensation. If the product
is installed in a panel, ensure that the temperature around the product (not the
temperature around the panel) does not go outside the specified range.
(3) Provide sufficient space around the product for heat dissipation.
(4) Use and store the product within the specified temperature and humidity ranges.
If several products are mounted side-by-side or arranged in a vertical line, the
heat dissipation will cause the internal temperature of the products to rise,
shortening the service life. If necessary, cool the products using a fan or other
cooling method.
(5) The service life of the output relays depends on the switching capacity and
switching conditions. Consider the actual application conditions and use the
product within the rated load and electrical service life. Using the product beyond
its service life may result in contact welding or burning.
(6) Install the product horizontally.
(7) Mount to a panel between 1 and 8-mm thick.
(8) Use the specified size of crimp terminals (M3, width: 5.8 mm max.) for wiring. To
connect bare wires, use AWG22 (cross section: 0.326 mm
2
) to AWG14 (cross
section: 2.081 mm
2
) to wire the power supply terminals and AWG28 (cross
section: 0.081 mm
2
) to AWG16 (cross section: 1.309 mm
2
) for other terminals.
(Length of exposed wire: 6 to 8 mm)
(9) In order to prevent inductive noise, wire the lines connected to the product
separately from power lines carrying high voltages or currents. Do not wire in
parallel with or in the same cable as power lines. Other measures for reducing
noise include running lines along separate ducts and using shield lines.
(10) Ensure that the rated voltage is achieved no longer than 2 s after turning the
power ON.
(11) Allow the product to operate without load for at least 15 minutes after the power is
turned ON.
(12) Do not install the product near devices generating strong high-frequency waves
or surges. When using a noise filter, check the voltage and current and install it
as close to the product as possible.
(13) Do not use thinner to clean the product. Use commercially available alcohol.
(14) Be sure to confirm the name and polarity for each terminal before wiring the
Precautions for Safe Use