Datasheet

Solid State Relays Common Precautions
●For precautions on individual products, refer to "■Precautions" in individual product information.
Touching the charged section is likely to cause
electric shock. Do not touch the SSR terminal
section (the charged section) when the power
supply is ON. For SSRs with terminal covers, be
sure to attach the cover before use.
The SSR and heat sink will be hot and are likely to
cause burns. Do not touch the SSR or the heat sink
either while the power supply is ON, or
immediately after the power is turned OFF.
The internal snubber circuit is charged and will
cause electric shock. Do not touch the SSR load
terminal immediately after the power is turned OFF.
Electric shock is likely to result. Be sure to
conduct wiring with the power supply turned OFF.
SSRs may occasionally explode. Do not apply a
short-circuit current to the load side of an SSR.
To protect against short-circuit accidents, be sure
to install a protective device, such as a
quick-break fuse etc. on the power supply line.
OMRON constantly strives to improve quality and reliability. SSRs,
however, use semiconductors, and semiconductors may commonly
malfunction or fail. Short-circuit failures represent the main failure
mode and can result in an inability to shut OFF the load. Therefore,
for fail-safe operation of control circuits that use SSRs, do not use
circuits that shut OFF the load power supply only with an SSR, but
rather also use circuits with a contactor or breaker that shuts off the
load when the SSR fails. In particular, it may not be possible to
ensure safety if the SSRs are used outside the rated ranges.
Therefore, always use the SSRs within the ratings.
When using an SSR, always design the system to ensure safety
and prevent human accidents, fires, and social harm in the event
of SSR failure. System design must include measures such as
system redundancy, measures to prevent fires from spreading,
and designs to prevent malfunction.
1. Do not apply voltage or current in excess of the ratings to the
terminals of the SSR. Doing so may result in failure or burn
damage.
2. Heat Radiation
x Be careful with the increase in ambient temperature caused
by self-heating. Mount a fan etc. to provide a sufficient air
ventilation especially in case of internal mounting.
x Mount the SSR following the specified mounting orientation.
The abnormal heat generation from the body may cause
output elements to short or may cause burning.
3. Perform correct wiring following the precautions below.
Improper wiring may lead to abnormal heating resulting in burn
damage to the SSR once the power is supplied.
x Use a suitable wire according to the load current. Otherwise
the abnormal heating of the wire may cause burning.
4. Operating Conditions
x Designate the load within the rated range. Otherwise it may
result in faulty operation, malfunction, or burning.
x Use a power supply within the rated frequency range.
Otherwise it may result in faulty operation, malfunction, or
burning.
5. Do not transport the SSR under the following conditions.
Failure, malfunction, or deterioration of performance
characteristics may occur.
x Conditions under which the SSR will be exposed to water
x High temperatures or high humidity
x Without proper packing
6. Operating and Storage Environment
Do not use or store the SSR in the following environments.
Doing so may result in damage, malfunction, or deterioration
of performance characteristics.
CAUTION
Safety Cautions
x Do not use or store in environments subject to exposure
to sunlight.
x Do not use in environments subject to temperatures
outside the range specified individually.
x Do not use in environments subject to relative humidity
outside the range of 45% to 85% RH, or in locations
subject to condensation as the result of severe changes
in temperature.
x Do not store in environments subject to temperatures
outside the range specified individually.
x Do not use or store in environments subject to corrosive
or flammable gases.
x Do not use or store in environments subject to dust, salt,
or iron dust, or in locations subject to salt damage.
x Do not use or store in environments subject to shock or
vibration.
x Do not use or store in environments subject to exposure
to water, oil, or chemicals, or in environments subject to
exposure to rain and water splashes.
x Do not use or store in environments subject to high
temperature or high humidity.
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