Omron K3HB-C User Manual page 8

Precautions for Safe Use
(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
2.081 mm ) to wire the power supply terminals and AWG28 (cross section: 0.081 mm
to AWG16 (cross section: 1.309 mm
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 terminal
block and connectors.
(15) Use the product within the noted supply voltage and rated load.
2
) to AWG14 (cross section:
2
) for other terminals. (Length of exposed wire: 6 to
2
)
VII