Safety Precautions; Precautions For Correct Use; Precautions For Safe Use - Omron Ateg H3DT Series Manual

Datenblatt
Zeitrelais H3DT
H3DT
H3DT

Safety Precautions

Refer to Safety Precautions for All Timers.
Format of Warning Indications
CAUTION
Precautions for
Safe Use
Precautions for
Correct Use
Meaning of Graphic Symbols for Ensuring Product Safety
Indicates the possibility of electric shock under
specific conditions.
Indicates the instructions of unspecified prohibited
action.
Indicates the possibility of injuries, such as electric
shock by disassembling the device, prohibiting
disassembly.
Indicates the instructions of unspecified general
action.
Switching arcs or relay heating may cause fire or
explosion. Do not use the Timer in the presence of
inflammable or explosive gases.
The H3DT Series uses a transformerless power
supply system. An electrical shock may occur if an
input terminal is touched while power is being
supplied.
The inrush current will depend on the type of load
and may influence the contact switching
frequency and number of operations. Check both
the rated current and the inrush current, and allow
leeway in the circuit design.
The life of the output relay largely depends on the
switching current and other switch conditions.
Consider the actual application conditions and do
not exceed the rated load or electrical life. If the
output relay is used beyond its service life, the contacts may
fuse or burning may occur. Also, never exceed the rated load
current. When using a heater, also place a thermal switch in
the load circuit.
Do not remove the external case.
Minor electric shock, fire, or equipment failure may
sometimes occur. Do not disassemble, modify, or
repair the Timer or touch any internal parts.
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Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderate injury or in property damage.
Indicates supplementary comments on
what to do or avoid doing, to use the
product safety.
Includes operating precautions to ensure
that the product will operate properly and
that performance and functions will not be
adversely affected.
CAUTION
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Precautions for Safe Use

• Rapid changes in temperature or high humidity may cause
condensation in Timer circuits, possibly resulting in malfunction or
damage to components. Check the application environment.
• Use the Timer within the ambient operating temperature and
ambient operating humidity ranges given for the Timer model you
are using.
• Do not use or store a Timer in the following locations.
• Locations subject to water, oil, or chemicals
• Outdoor locations or under direct sunlight
• Locations subject to dust or corrosive gases (sulfurizing gases,
ammonia, chloride gas, silicon gas, etc.)
• Locations subject to vibration and large shocks
• Locations subject to wind and rain
• Locations subject to insects or small animals
• Each switch has a snap mechanism that secures the switch at
given positions. Set each switch to one of these positions. Do not
set a switch midway between two positions. Malfunction or failure
could result from an improper setting.
• Separate the Timer from any sources of excessive static electricity,
such as forming materials and pipes carrying power or liquid
materials.
• Maintain the variations in the power supply voltage to within the
specified allowable range.
• If a voltage that exceeds the rating is applied, internal components
may be destroyed.
• The terminal block may be damaged if you insert a screwdriver in
the release hole with excessive force.
• Do not wire anything to the release holes.
• Do not tilt or twist a flat-blade screwdriver while it is inserted into a
release hole on the terminal block. The terminal block may be
damaged.
• Insert a flat-blade screwdriver into the release holes at an angle.
The terminal block may be damaged if you insert the screwdriver
straight in.
• Do not allow the flat-blade screwdriver to fall out while it is inserted
into a release hole.
• Do not bend a wire past its natural bending radius or pull on it with
excessive force. Doing so may cause the wire disconnection.
• Do not insert more than one wire into each terminal insertion hole.
• To prevent wiring materials from smoking or ignition, use the wiring
materials given in the following table.
Recommended wire
0.25 to 1.5mm 2 /AWG24 to 16
Note: Please use Ferrules with UL certification (R/C).
• Use only the specified wires for wiring.
• When wiring the terminals, allow some leeway in the wire length.
• Install and clearly label a switch or circuit breaker so that the
operator can quickly turn OFF the power supply.
• If the Timer is left in the timed out condition for a long period of time
at high temperatures, internal components (such as electrolytic
capacitors) may deteriorate quickly.
• The exterior of the Timer may be damaged by organic solvents
(such as thinners or benzene), strong alkali, or strong acids.
• For Timers with AC power input, use a commercial power supply
for the power supply voltage. Although some inverters give 50/60
Hz as the output frequency, do not use an inverter output as the
power supply for a Timer. Doing so may result in smoking or
burning due to internal temperature increases in the Timer.
• When disposing of the Timer, observe all local ordinances as they
apply.
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Stripping length
Without
With Ferrules
Ferrules
10 mm 8 mm
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