Safety Precautions - Omron H5S Datasheet

Safety Precautions

!CAUTION
Minor injury by electric shock may occasionally occur. Do
not touch any of the terminals while power is being
supplied. Be sure to mount the terminal cover after wiring.
When using a surface-mounting model in an exposed
condition, always install the Y92A-72H terminal cover
(separately purchased).
Minor injury due to explosion may occasionally occur. Do
not use the product where subject to flammable or
explosive gas.
Minor electric shock, fire or malfunction may occasionally
occur. Never attempt to disassemble, modify, or repair the
product or touch any of the internal parts.
Fire may occasionally occur. Tighten the terminal screws
to the rated torque (from 0.98 to 1.17 N·m).
Unexpected operation may occasionally occur.
Before changing times or other settings while power is
being supplied, either turn OFF the power on the load
side or set the output ON/OFF switch to OFF and confirm
the safety of the system.
Minor electric shock, fire, or malfunction may occasionally
occur. Do not allow metal fragments, lead wire scraps, or
shavings from installation work to fall inside the Time
Switch.
If the output relay is used beyond its life expectancy, its
contacts may become fused or there may be a risk of
burning. Use the product within its rated load and
electrical life expectancy. The life expectancy of the
output relay varies considerably according to its capacity
and operating conditions.
Serious injury may occasionally occur due to fire or
explosion of a battery, or leakage from a battery. Never
attempt to short the positive and negative terminals,
recharge, disassemble, deform by applying excessive
pressure, or expose the battery to fire.
■ Precautions for Safe Use
Please comply strictly with the following instructions which are
intended to ensure safe operation of the product.
1. Have the Time Switch installed only by qualified electrical
workers.
2. Store the Time Switch within the specified ratings. If the Time
Switch has been stored at temperatures of -10°C or lower, let it
stand for three hours or longer at room temperature before
turning ON the power supply.
3. Mounting the Time Switch side-by-side may reduce the life
expectancies of internal components.
4. Use the Time Switch within the specified ratings for operating
temperature and humidity.
5. Do not operate the Time Switch in any of the following locations.
• Locations subject to sudden or extreme changes in
temperature.
• Locations where high humidity may result in condensation.
6. The Time Switch is not waterproof or oil resistant. Do not use it in
locations subject to water or oil.
7. Do not use the Time Switch in locations subject to excessive dust,
corrosive gas, or direct sunlight.
8. Install the Time Switch well away from any sources of excessive
static electricity, such as pipes transporting molding materials,
powders, or liquids.
9. Maintain voltage fluctuations in the power supply within the
specified range.
12
Digital Time Switch
H5S
10.Internal elements may be destroyed if a voltage outside the rated
voltage is applied.
11.Be sure to wire the terminals correctly and use the correct
polarity.
12.Separate equipment that produces input signals, input signal
wiring, and the Time Switch from noise-generating sources and
high-voltage lines containing noise.
13.Do not connect more than two crimp terminals to each Time
Switch terminal.
14.Up to two wires of the same size and type can be inserted into a
single terminals.
15.Use the specified wires for wiring.
Applicable wire: AWG 22 to AWG 14 (equal to a cross-sectional
2
area of 0.326 to 2.081 mm
Solid wire or twisted wire
Copper
16.Install a switch or circuit breaker that allows the operator to
immediately turn OFF the power, and label it to clearly indicate its
function.
17.Take adequate protective measures (such as a breaker, or fuse)
for the power supply of the Time Switch.
18.When using heaters, be sure to use a thermal switch for the load
circuit.
19.Always maintain the load current within specifications.
20.Use a switch, relay, or other contacts so that the rated power
supply voltage will be reached within 0.1 s. If the power supply
voltage is not reached quickly enough, the power source may fail
to reset or the outputs may fail to operate correctly.
21.Use a switch, relay, or other contact to turn the power supply OFF
instantaneously. Outputs may malfunction and memory errors
may occur if the power supply voltage is decreased gradually.
22.The Time Switch utilizes a transformerless power supply. Do not
touch the input terminal while power is being supplied; touching
live terminals may result in electric shock.
23.Use the Time Switch within the specified ratings for vibration and
shock.
24.Use a commercial power supply when using AC power supply
voltage input.
Although some inverters specify their output frequency as 50/
60 Hz, smoke or burning may occur from a rise in internal
temperature. Do not use inverter output as the power supply.
25.Do not leave the Time Switch for long periods at a high
temperature with output current in the ON state. Doing so may
result in the premature deterioration of internal components (e.g.,
electrolytic capacitors).
26.Do not use organic solvents (such as paint thinner or benzine),
strong alkaline, or strong acids to clean the case because they
will damage the external finish.
27.None of the Time Switch components are user-replaceable,
including the battery.
28.Use a tool such as long nose pliers to prepare the openings for
pulling wires out of the optional Y92A-72H Large Terminal Cover.
Attempts to form an opening by hand may result in injury.
■ Precautions for Correct Use
1. When the power is turned ON, an inrush current will flow for a
short time (AC: Approx. 2.5 A (0.3 ms), DC: Approx. 1.1 A (3 ms)).
Depending on the power supply capacity, operation may not start.
Be sure to use a power supply with a sufficient capacity.
2. Inrush current generated by turning ON or OFF the power supply
may deteriorate contacts on the power supply circuit. Use to turn
ON or OFF devices with a rated current of 10 A min.
)